Search Results: "How Does Convection Work? - Christmas Lectures with George Porter"

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02:27
How Does Convection Work? - Christmas Lectures with George Porter

524 views / 0 likes - added 3 years ago

George Porter demonstrates the process of convection, helping to solve the age-old problem of why sauces on our plate stay hot while everything else gets cold.Watch the full fourth lecture of the series: https://www.rigb.org/christmas-lectures/watch/1976/
02:56 Popular
Making Heat Engines - Christmas Lectures with George Porter

1,226 views / 0 likes - added 3 years ago

George Porter shows how we can make heat engines by harnessing the power of sunlight, and what we can use them to do.Watch the full fifth lecture of the series: https://www.rigb.org/christmas-lectures/watch/1976/the-natural-history-of-a-sunbeam/making-lig
04:01 Popular
How Nylon Was Discovered - Christmas Lectures with George Porter

718 views / 0 likes - added 3 years ago

George Porter shows how nylon was discovered by chemists, and gives a demonstration of how we can spin nylon threads.Watch the full second lecture of the series: https://www.rigb.org/christmas-lectures/watch/1976/the-natural-history-of-a-sunbeam/light-and
05:53
What Happens To Sunbeams On Their Journey To Earth? - Christmas Lectures with George Porter

445 views / 0 likes - added 3 years ago

George Porter shows what happens on a sunbeams journey from the sun to Earth, with some help from John Tyndalls blue sky tube.Watch the full first lecture of the series: https://www.rigb.org/christmas-lectures/watch/1976/the-natural-history-of-a-sunbeam/f
02:39
Can We Make Fuel Out Of Sunlight? - Christmas Lectures with George Porter

384 views / 0 likes - added 3 years ago

George Porter shows how we can make a type of fuel by shining light on a substance.Watch the full sixth lecture of the series: https://www.rigb.org/christmas-lectures/watch/1976/the-natural-history-of-a-sunbeam/survival-under-the-sun?utm_source=youtube&ut
03:53
Projecting Sunlight Pictures Onto Plants - Christmas Lectures with George Porter

262 views / 0 likes - added 3 years ago

George Porter shows how we can project pictures onto geranium leaves using sunlight.Watch the full third lecture of the series: https://www.rigb.org/christmas-lectures/watch/1976/the-natural-history-of-a-sunbeam/a-leaf-from-nature?utm_source=youtube&utm_m
09:34
How Does an Organ Work? - Christmas Lectures with Charles Taylor

571 views / 0 likes - added 4 years ago

Charles Taylor goes inside a church organ to see how the different sounds are produced.Subscribe for regular science videos: http://bit.ly/RiSubscRibeWatch the full fourth lecture of the series: https://www.rigb.org/christmas-lectures/watch/1989/exploring
04:15 Popular
How Does Gel Electrophoresis Work? - Christmas Lectures with Walter Bodmer

1,008 views / 0 likes - added 5 years ago

Gel electrophoresis is used to study DNA and other complex molecules with the help of electricity. Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full third lecture of the series: https://www.rigb.org/christmas-lectures/watch/19
05:06
How Do Maglev Trains Work? - Christmas Lectures with Leonard Maunder

461 views / 0 likes - added 5 years ago

Maglev stands for magnetic levitation which is how these trains hover and are pushed along the tracks. Subscribe for regular science videos: http://bit.ly/RiSubscRibe While only three countries currently have operational maglev trains, China, Japan and So
59:40
Christmas Lectures 2018: Where Do I Come From? - Alice Roberts and Aoife McLysaght

453 views / 0 likes - added 5 years ago

In the first lecture of the 2018 Christmas Lectures Alice Roberts and Aoife McLysaght explore the tree of life and see where humans come from. Watch more Christmas Lectures: http://www.rigb.org/christmas-lectures/watch?utm_source=youtube&utm_medium=social
59:21
Christmas Lectures 2018: What Makes Me Human? - Alice Roberts and Aoife McLysaght

483 views / 0 likes - added 5 years ago

In the second lecture of the 2018 Christmas Lectures Alice Roberts and Aoife McLysaght explore human evolution. Watch more Christmas Lectures: http://www.rigb.org/christmas-lectures/watch?utm_source=youtube&utm_medium=social&utm_term=description Due to co
59:14
Christmas Lectures 2020: Up in the Air - with Tara Shine

160 views / 0 likes - added 2 years ago

In the third lecture of the 2020 Christmas Lectures, environmental scientist Tara Shine demonstrates how Earth produces a never-ending supply of oxygen the raw material for all complex life.Watch more Christmas Lectures: http://www.rigb.org/christmas-lect
56:56
Christmas Lectures 2018: What Makes Me, Me? - Alice Roberts and Aoife McLysaght

465 views / 0 likes - added 5 years ago

What makes humans human? And what makes every person an individual? Watch more Christmas Lectures: http://www.rigb.org/christmas-lectures/watch?utm_source=youtube&utm_medium=social&utm_term=description Due to copyright restrictions, we are not able to inc
03:42
What is the Sun Made Of? - Christmas Lectures with James Jackson

269 views / 0 likes - added 3 years ago

What is the sun made of? And can the answers we find there help us figure out what' deep inside our own planet - Earth?Watch the full first lecture of the series: https://www.rigb.org/christmas-lectures/watch/1995/planet-earth-an-explorers-guide/on-the-ed
02:35
Living Medicines - Christmas Lectures with Alison Woollard

377 views / 0 likes - added 4 years ago

Alison Woollard explains how we can now use cell therapy to create living medicines, with help from Natalie Mount from Cell Therapy Catapult.Watch the full third lecture of the series: https://www.rigb.org/christmas-lectures/watch/2013/life-fantastic/coul
04:02
Memory Tricks with Chirality - Christmas Lectures with Charles Stirling

517 views / 0 likes - added 4 years ago

Do you remember which way the Mona Lisa faces? Or the Queen on a 10p coin? Test your memory and ability to tell left from right in this clip from the 1992 Christmas Lectures.Subscribe for regular science videos: http://bit.ly/RiSubscRibeWatch the full fir
03:04 Popular
How Fusion Reactors Control Plasma - 2016 CHRISTMAS LECTURES

744 views / 0 likes - added 7 years ago

Professor Ian Chapman joins Saiful Islam to explain how fusion reactors create plasma, and control it with magnetic fields. Watch the full 2016 CHRISTMAS LECTURES here: http://richannel.org/christmas-lectures/2016/supercharged-fuelling-the-future Watch Ia
03:13
Early 3D Movement Analysis - Christmas Lectures with Leonard Maunder

422 views / 0 likes - added 5 years ago

Today's impressive motion capture technology couldn't exist without the work done in the 1970s and 80s. One such example is the CODA, demonstrated here in 1983. Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full sixth lecture o
20:59
Christmas Everyday | George of the Jungle | Full Episode | Cartoons For Kids

448 views / 0 likes - added 2 years ago

George finds out why we don't celebrate Christmas everyday!George of the Jungle | Season 1 | Episode 23 | Jungle Bells/The Goat of Christmas PresentsIt's jungle bells for all as George spreads holiday cheer, and decides to celebrate Christmas every day of
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Christmas Lectures 2019: How Can We All Win? - Hannah Fry

359 views / 0 likes - added 4 years ago

In the third and final lecture of the 2019 Christmas Lectures, Hannah Fry looks at why maths can fail and asks what the limits of maths are. Watch more Christmas Lectures: http://www.rigb.org/christmas-lectures/watch?utm_source=youtube&utm_medium=social&u
09:41
Demonstrating Resonance with Chladni Figures - Christmas Lectures with Charles Taylor

347 views / 0 likes - added 4 years ago

Charles Taylor recreates the famous Chadni figures and shows how vibrating plates are used to make music in various instruments.Subscribe for regular science videos: http://bit.ly/RiSubscRibeWatch the full third lecture of the series: https://www.rigb.org
04:14
How Do Pain Relievers Work? - George Zaidan

630 views / 0 likes - added 6 years ago

View full lesson: http://ed.ted.com/lessons/how-do-pain-relievers-work Some people take aspirin or ibuprofen to treat everyday aches and pains, but how exactly do the different classes of pain relievers work? Learn about the basic physiology of how humans
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Christmas Lectures 2019: How to Get Lucky - Hannah Fry

102 views / 0 likes - added 1 year ago

In the first lecture of the 2019 Christmas Lectures, Hannah Fry explores how mathematical thinking and probability can allow us to understand and predict complex systems - even helping us to make our own luck.Watch more Christmas Lectures: http://www.rigb
59:13
Christmas Lectures 2020: Engine Earth - with Chris Jackson

169 views / 0 likes - added 2 years ago

In the first lecture of the 2020 Christmas Lectures, geologist Chris Jackson shows us how the planets oldest rocks and fossils tell a story of radical climate changes throughout history and how the Earths finely balanced tectonic system volcanoes has cont
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What Keeps Airplanes Up? - Christmas Lectures with Leonard Maunder

712 views / 0 likes - added 5 years ago

How do airplane wings generate lift? Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full fifth lecture of the series: http://www.rigb.org/christmas-lectures/watch/1983/machines-in-motion/under-control?utm_source=youtube&utm_medi
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07:44 Popular
What is Bandwidth - Christmas Lectures with David Pye

1,627 views / 0 likes - added 5 years ago

How are signals transmitted and processed and what's the role of bandwidth within it? Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full lecture: http://www.rigb.org/christmas-lectures/watch/1985/communicating/no-man-is-an-isla
59:16
Christmas Lectures 2019: How to Bend the Rules - Hannah Fry

330 views / 0 likes - added 4 years ago

In the second lecture of the 2019 Christmas Lectures, Hannah Fry shows how data-gobbling algorithms have taken over our lives and now control almost everything we do without us even realising. Watch more Christmas Lectures: http://www.rigb.org/christmas-l
04:42
Visualising Resonance - Christmas Lectures with Leonard Maunder

639 views / 0 likes - added 5 years ago

What does resonance look like? Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full third lecture of the series: http://rigb.org/christmas-lectures/watch/1983/machines-in-motion/vibration?utm_source=youtube&utm_medium=social&utm_
04:49
Controlling Your Body With Electricity - 2016 CHRISTMAS LECTURES

72 views / 0 likes - added 1 year ago

Alison Woollard finds her movement controlled by a child when theyre connected via electric wires in Saiful Islams 2016 CHRISTMAS LECTURES. In the second of his CHRISTMAS LECTURES, chemist Saiful Islam continues his exploration of one of the most importan
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"It's My Own Invention" Eric Laithwaite 1974 RI Christmas Lectures, Lecture 6

216 views / 0 likes - added 2 years ago

Professor Eric Laithwaite presents his second televised series of CHRISTMAS LECTURES exploring the world of engineering.A sequel to his 1966 series, 'The Engineer in Wonderland', Laithwaite was the first person to present two series of Lectures on nationa
03:08
Firefly Signalling - Christmas Lectures with David Pye

440 views / 0 likes - added 5 years ago

Fireflies use their bio-luminescence to communicate with each other to find a mate. And to lure unsuspecting prey with false signalling. Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full lecture:http://www.rigb.org/christmas-l
07:01
The Mechanics of the Piano - Christmas Lectures with Charles Taylor

330 views / 0 likes - added 4 years ago

What makes a piano produce a sound?Subscribe for regular science videos: http://bit.ly/RiSubscRibeWatch the full fifth lecture of the series: https://www.rigb.org/christmas-lectures/watch/1989/exploring-music/scales-synthesizers-and-samplers?utm_source=yo
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The Golden Angle - Christmas Lectures with Ian Stewart

980 views / 0 likes - added 5 years ago

Thr golden angle is a mathematical concept, closely related to the golden ratio and Fibonacci numbers. Where can you find it and how is it formed? Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full lecture: http://www.rigb.org/
04:16
Seeing in the Dark - Christmas Lectures with RV Jones

557 views / 0 likes - added 5 years ago

How to keep an eye on intruders in total darkness? RV Jones gets a helping hand from an infrared camera. Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full lecture: http://www.rigb.org/christmas-lectures/watch/1981/from-magna-c
02:42
Your Nose Can Tell Left From Right - Christmas Lectures with Charles Stirling

526 views / 0 likes - added 4 years ago

The handedness of molecules can change how they smell, Charles Striling demonstrates this using the carvone molecule.Subscribe for regular science videos: http://bit.ly/RiSubscRibeWatch the full fourth lecture of the series: https://www.rigb.org/christmas
59:35
Eric Laithwaite 1974 RI Christmas Lectures, Lecture 2: "Tweedledum and Tweedledee"

274 views / 0 likes - added 4 years ago

Professor Eric Laithwaite presents his second televised series of CHRISTMAS LECTURES exploring the world of engineering.A sequel to his 1966 series, 'The Engineer in Wonderland', Laithwaite was the first person to present two series of Lectures on nationa
02:04 Popular
How to Extract DNA at Home - Christmas Lectures with Walter Bodmer

787 views / 0 likes - added 5 years ago

It is easy to extract DNA from something like strawberries at home, as Walter Bodmer demonstrates in this clip from his second Christmas Lecture. Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full second lecture of the series:
1:00:12
Eric Laithwaite 1974 RI Christmas Lectures, Lecture 4 "The Jabberwock"

318 views / 0 likes - added 4 years ago

Professor Eric Laithwaite presents his second televised series of CHRISTMAS LECTURES exploring the world of engineering.A sequel to his 1966 series, 'The Engineer in Wonderland', Laithwaite was the first person to present two series of Lectures on nationa
04:04
Properties of Liquid Nitrogen - Christmas Lectures with EM Rogers

535 views / 1 likes - added 4 years ago

Eric Rogers explores some of the properties of liquid nitrogen in this clip from his first Christmas Lecture in 1979.Subscribe for regular science videos: http://bit.ly/RiSubscRibeWatch the full first lecture of the series: https://www.rigb.org/christmas-
03:20
The Laser Eavesdropper - Christmas Lectures with RV Jones

459 views / 0 likes - added 5 years ago

RV Jones demonstrates the hottest spy gadget in espionage stories at the time - a laser eavesdropper. Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full lecture: http://www.rigb.org/christmas-lectures/watch/1981/from-magna-cart
05:39
Types of Oscillators - Christmas Lectures with Philip Morrison

478 views / 0 likes - added 5 years ago

What are the similarities and differences between pendulums and spring oscillators? Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full lecture:http://www.rigb.org/christmas-lectures/watch/1968/gullivers-travels/beyond-the-map?u
02:04
How Helium Changes our Voice - Christmas Lectures with Eric M Rogers

334 views / 0 likes - added 4 years ago

Eric M Rogers demonstrates how helium can change our voice with comedic effect.Watch the full third lecture of the series: https://www.rigb.org/christmas-lectures/watch/1979/atoms-for-enquiring-minds/electrified-atoms?utm_source=youtube&utm_medium=social&
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The Doppler Effect - Christmas Lectures with RV Jones

995 views / 0 likes - added 5 years ago

Police sirens change pitch when going past us due to the Doppler effect. This phenomenon can also be used to measure speeds, even of faraway objects, like stars. Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full lecture: http:
05:04
Why Do Volcanic Eruptions Form Mushrooms Clouds? - Christmas Lectures with James Jackson

557 views / 1 likes - added 3 years ago

Volcanic eruptions form distinctive mushroom clouds when the extremely hot mixture of gas, magma and rocks shoots out of the volcano at high speed.Watch the full third lecture of the series: https://www.rigb.org/christmas-lectures/watch/1995/planet-earth-
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Eric Laithwaite 1974 RI Christmas Lectures, Lecture 1: "Looking Glass House"

341 views / 0 likes - added 4 years ago

Professor Eric Laithwaite presents his second televised series of CHRISTMAS LECTURES exploring the world of engineering.A sequel to his 1966 series, 'The Engineer in Wonderland', Laithwaite was the first person to present two series of Lectures on nationa
02:59
The Belousov-Zhabotinsky Reaction - Christmas Lectures with Ian Stewart

425 views / 0 likes - added 5 years ago

Ian Stewart demonstrates the classic oscillating BZ reaction as an example of symmetry breaking or non-equilibrium thermodynamics. Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full lecture: http://www.rigb.org/christmas-lectur
09:07
How Do Nerve Cells Carry Information? - Christmas Lectures with David Pye

500 views / 0 likes - added 5 years ago

What is action potential and how does it help nerves carry information, such as pain or pleasure signals? Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full lecture: http://www.rigb.org/christmas-lectures/watch/1985/communicati
01:54
The Guthrie Test - Christmas Lectures with Walter Bodmer

401 views / 0 likes - added 5 years ago

A version of the newborn blood spot test or Guthrie test is to this day administered for early detection of diseases such as PKU, sickle cell disease and cystic fibrosis. Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full sixth
59:58
Christmas Lectures 2020: Water World - with Helen Czerski

177 views / 0 likes - added 2 years ago

In the second lecture of the 2020 Christmas Lectures, physicist and oceanographer Helen Czerski unpicks the Earths heating and plumbing systems, showing how shifting ocean water creates an engine that distributes heat and nutrients around our planet.Watch
05:41
How Do We Know That the Earth's Magnetic Poles Have Flipped? - Christmas Lectures with James Jackson

420 views / 0 likes - added 3 years ago

Volcanic rocks contain small bits of iron oxide that get magnetised in the direction of the Earth's magnetic field as they cool. Comparing rocks of different ages reveals the magnetic history of our planet.Watch the full second lecture of the series: http
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The Cloud Chamber - Christmas Lectures with Frank Close

458 views / 0 likes - added 5 years ago

The cloud chamber is an incredible piece of equipment that allows us to visualise ionising radiation. Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full lecture: http://www.rigb.org/christmas-lectures/watch/1993/the-cosmic-onio
03:14
Glow In The Dark Worm Genes - Christmas Lectures with Alison Woollard

375 views / 0 likes - added 4 years ago

Alison Woollard shows how we can use special genes to make worms' muscle cells glow in the dark. Watch the full first lecture of the series: https://www.rigb.org/christmas-lectures/watch/2013/life-fantastic/where-do-i-come-from?utm_source=youtube&utm_medi
04:49
Tricks of Perspective - Christmas Lectures with Eric M Rogers

317 views / 0 likes - added 4 years ago

Eric M Rogers gives us a warning about the way we attach new unfamiliar knowledge to old familiar things that we already know.Watch the full sixth, and final, lecture of the series: https://www.rigb.org/christmas-lectures/watch/1979/atoms-for-enquiring-mi
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Acrobatic DNA Replication - Christmas Lectures with Alison Woollard

780 views / 0 likes - added 4 years ago

Alison Woollard demonstrates how DNA replicates when it divides, with some acrobatic help from the Infinity Elites cheerleaders. Watch the full second lecture of the series: https://www.rigb.org/christmas-lectures/watch/2013/life-fantastic/am-i-a-mutant?u
11:04 Popular
How Pasteur Demonstrated Molecular Asymmetry - Christmas Lectures with Charles Stirling

1,304 views / 0 likes - added 4 years ago

Louis Pasteur showed how some molecules are optically asymmetrical by investigating tartaric acid compounds present in wine.Subscribe for regular science videos: http://bit.ly/RiSubscRibeWatch the full third lecture of the series: https://www.rigb.org/chr
5:51:01
Eric Laithwaite's 1974 Christmas Lectures: The Engineer Through the Looking Glass

115 views / 0 likes - added 1 year ago

In this video, I have combined all of Professor Eric Laithwaite's 1974 lectures from the Royal Institution's annual Christmas Lectures series. There are 6 lectures in total and the series is entitled "The Engineer Through the Looking Glass". Eric mirrors
04:33
Fractals: The Geometry of Chaos - Christmas Lectures with Ian Stewart

534 views / 0 likes - added 5 years ago

Using a simple set of mathematical rules, a very intricate geometry can be created in the form of fractals. The Sierpinski triangle is a famous example. Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full lecture: http://www.rig
08:15 Popular
The Mathematics of Locomotion - Christmas Lectures with Ian Stewart

1,136 views / 0 likes - added 5 years ago

The scof all living things is governed by nerve impulses that follow a pattern of travelling waves. This is true for the trot of a horse, the tripod gait of an ant, the undulating movement of the millipede and even the slither of a snake. Subscribe for re
08:02
What's a Laserdisc? - Christmas Lectures with RV Jones

395 views / 0 likes - added 5 years ago

Laserdisc was the very first optical disk, able to hold recordings of images, audio and video. RV Jones explains the mechanism of how it works. Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full lecture: http://www.rigb.org/chr
08:01
Optical Fiber Cables - Christmas Lectures with David Pye

424 views / 0 likes - added 5 years ago

In 1985, fiber optic cables were just starting to get widely adopted. David Pye shows the principles behind them and how old telephone cables were swapped out for new ones. Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full lec
06:20
Looking for Dark Matter - Christmas Lectures with Frank Close

415 views / 0 likes - added 5 years ago

Frank Close looks at how observations from galaxy rotation and gravitational lensing can imply the existence of dark matter. Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full lecture: http://www.rigb.org/christmas-lectures/wat
03:45
Checking the Weather Report in 1985 - Christmas Lectures with David Pye

476 views / 0 likes - added 5 years ago

Computers had come a long way by the 1980s. With only a few gadgets you could even get the weather report right to your computer screen without having to wait for the evening news. Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the
03:40
How Jets Are Used to Attitude Control Satellites - Christmas Lectures with Leonard Maunder

485 views / 0 likes - added 5 years ago

Controlling the orientation of an object is called attitude control. Leonard Maunders shows how small jets are used to control the attitude of satellites. Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full second lecture of the
05:42
Tyndall's Experiments on Resonance - Christmas Lectures with Charles Taylor

625 views / 0 likes - added 4 years ago

Charles Taylor recreates John Tyndall's experiments demonstrating resonance.Subscribe for regular science videos: http://bit.ly/RiSubscRibeWatch the full second lecture of the series: https://www.rigb.org/christmas-lectures/watch/1989/exploring-music/the-
05:20
The Hidden Significance of Shell Chirality - Christmas Lectures with Charles Stirling

489 views / 0 likes - added 4 years ago

Snails with right-handed shells cannot mate with those with left-handed ones. But you can predict the presence of oil in a location by looking at their ratios. Subscribe for regular science videos: http://bit.ly/RiSubscRibeWatch the full second lecture of
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Becoming A Pterodactyl - Christmas Lectures with Simon Conway Morris

332 views / 0 likes - added 4 years ago

Simon Conway Morris demonstrates how awesomely huge pterodactyls were, with a little help from some members of the audience. Watch the full fourth lecture of the series:https://www.rigb.org/christmas-lectures/watch/1996/the-history-in-our-bones/innovation
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Water Rockets - Christmas Lectures with Eric M Rogers

342 views / 0 likes - added 4 years ago

Eric M. Rogers gives a brief explanation of water rocket with a demonstration to cap it all off.Subscribe for regular science videos: http://bit.ly/RiSubscRibeWatch the full second lecture of the series: https://www.rigb.org/christmas-lectures/watch/1979/
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Using Radar to Detect and Identify Movement - Christmas Lectures with David Pye

379 views / 0 likes - added 5 years ago

Radars can be used to detect and identify all sorts of moving objects. David Pye demonstrates a handheld one and also shows how birds and planes can be detected. Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full lecture: http:
03:51
The Recipe For Life - Christmas Lectures with Simon Conway Morris

317 views / 0 likes - added 4 years ago

Simon Conway Morris gives us a demonstration of the quantities of chemical elements needed to create life.Watch the full fifth lecture of the series: https://www.rigb.org/christmas-lectures/watch/1996/the-history-in-our-bones/feet-on-the-ground-head-in-th
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Properties of Resistors - Christmas Lectures with Philip Morrison

1,037 views / 0 likes - added 5 years ago

What's the relationship of a resistors size to its electrical resistance? And how does resistance change when resistors are set in a series or in parallel? Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full lecture: http://www.
04:33
Measuring the Average Foot - Christmas Lectures with RV Jones

518 views / 0 likes - added 5 years ago

How can one estimate the average length of a foot? RV Jones shows a simple yet elegant demonstration. Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full lecture: http://www.rigb.org/christmas-lectures/watch/1981/from-magna-cart
04:08 Popular
What Keeps a Nucleus Together? - Christmas Lectures with Frank Close

1,184 views / 0 likes - added 5 years ago

Positive charge repels other positive charges. So what kind of force keeps the proton filled nucleus from exploding apart? Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full lecture: http://www.rigb.org/christmas-lectures/watch
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Tensile Strength Challenge: Cotton vs. Steel - Christmas Lectures with Charles Stirling

454 views / 0 likes - added 4 years ago

There are situations where cotton is stronger than steel.Subscribe for regular science videos: http://bit.ly/RiSubscRibeWatch the full fifth lecture of the series: https://www.rigb.org/christmas-lectures/watch/1992/our-world-through-the-looking-glass/in-t
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How to Measure the Speed of Light with Marshmallows - Christmas Lectures with Neil Johnson

94 views / 0 likes - added 1 year ago

This may not be something you'd thought of doing but now you know how the speed of light can be measured using only some marshmallows and a microwave oven.Watch the full second lecture of the series: http://www.rigb.org/christmas-lectures/watch/1999/arrow
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Electron Microscopy - Christmas Lectures with Frank Close

448 views / 0 likes - added 5 years ago

What does the world look like at an atomic level? Frank Close dons his 'atomic spectacles' and takes a look at copper and iron atoms. Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full lecture: http://www.rigb.org/christmas-lec
05:28
Liquid Nitrogen Fossilisation - Christmas Lectures with Simon Conway Morris

307 views / 0 likes - added 4 years ago

Simon Conway Morris shows how animals became fossilised, speeding up the process using liquid nitrogen.Watch the full first lecture of the series: https://www.rigb.org/christmas-lectures/watch/1996/the-history-in-our-bones/staring-into-the-abyss?utm_sourc
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"The Time Has Come the Walrus Said" Eric Laithwaite 1974 RI Christmas Lectures, Lecture 5

190 views / 0 likes - added 2 years ago

Professor Eric Laithwaite presents his second televised series of CHRISTMAS LECTURES exploring the world of engineering.A sequel to his 1966 series, 'The Engineer in Wonderland', Laithwaite was the first person to present two series of Lectures on nationa
03:19 Popular
Visualising Brownian Motion - Christmas Lectures with Philip Morrison

1,213 views / 0 likes - added 5 years ago

Philip Morrison uses a microscope and a model made of small ball bearings and a magnetic field to demonstrate Brownian motion. Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full lecture: http://www.rigb.org/christmas-lectures/w
02:13 Popular
Demonstrating How Sound Can't Travel Through a Vacuum - Christmas Lectures with Charles Taylor

15.9k views / 0 likes - added 4 years ago

Sound cannot travel in a vacuum as is demonstrated in this clip from Charles Taylor's first 1989 Christmas LectureSubscribe for regular science videos: http://bit.ly/RiSubscRibeWatch the full first lecture of the series: https://www.rigb.org/christmas-lec
05:01 Popular
Velocity of a Bullet - Christmas Lectures with RV Jones

738 views / 0 likes - added 5 years ago

RV Jones demonstrates a way to measure the speed of an air rifle pellet with a method similar to one that has been used to measure the speed of molecules – and even the speed of light. Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch
05:51
The Mathematics of Walking and Gait - Christmas Lectures with Philip Morrison

475 views / 0 likes - added 5 years ago

Just like the extent of the swing of a pendulum is proportional to the length of the pendulum, the pace of an animal walking is proportional to the length of the leg of the animal. Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the
02:04
Non-Euclidean Geometry of a Sphere - Christmas Lectures with Philip Morrison

536 views / 0 likes - added 5 years ago

According to Euclidean geometry the angles of a triangle add up to 180 degrees. Philip Morrison shows an example of where this isn't true, and non-Euclidean geometry applies. Watch the full lecture: http://www.rigb.org/christmas-lectures/watch/1968/gulliv
06:40
Bringing Dinosaurs Back To Life - Christmas Lectures with Simon Conway Morris

289 views / 0 likes - added 4 years ago

Simon Conway Morris shows what the world would have looked like when ancient animals like the Brachiosaurus were alive.Watch the full second lecture of the series: https://www.rigb.org/christmas-lectures/watch/1996/the-history-in-our-bones/the-fossils-com
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Surface Area to Volume Ratios - Christmas Lectures with Philip Morrison

828 views / 0 likes - added 5 years ago

The mathematicians of Lilliput assumed that Gulliver would need 1728 times as much food as an individual Lilliput. Philip Morrison shows why this is not true, using surface area to volume ratios. Watch the full lecture: http://www.rigb.org/christmas-lectu
04:13
Exploding a Lithium Ion Battery - 2016 CHRISTMAS LECTURES

101 views / 0 likes - added 1 year ago

Saiful Islam drops a nail through a lithium battery, and explains what it is that causes mobile phones to explode in the third of the 2016 CHRISTMAS LECTURES.Saiful Islam presents his final Lecture from his 2016 series, 'Supercharged: Fuelling the future'
02:21
How We Harness the Energy of a Chain Reaction - Christmas Lectures with Eric M Rogers

320 views / 0 likes - added 4 years ago

Eric M Rogers demonstrates how we can harness the power of uranium-235 atoms, with help from a giant mousetrap.Watch the full fifth lecture of the series: https://www.rigb.org/christmas-lectures/watch/1979/atoms-for-enquiring-minds/atoms-and-energy?utm_so
05:18
Visualising Antimatter with Bubble Chambers - Christmas Lectures with Frank Close

537 views / 0 likes - added 5 years ago

You can use a bubble chamber to visualise the passage of negatively charged electrons and their positively charged antimatter counterparts - positrons. Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full lecture: http://www.rigb
06:02
Rewinding 65 Million Years - Christmas Lectures with Simon Conway Morris

384 views / 0 likes - added 4 years ago

Simon Conway Morris turns back the clock 65 million years to find out how the configuration of the continents has changed.Watch the full third lecture of the series: https://www.rigb.org/christmas-lectures/watch/1996/the-history-in-our-bones/the-great-dyi
07:04
Wave-Particle Duality Explained with Double Slit Experiments - Christmas Lectures with Neil Johnson

91 views / 0 likes - added 1 year ago

Neil Johnson demonstrates how light behaves both as a wave and as a particle using a series of double slit experiment setups. Watch the full fifth lecture of the series: http://www.rigb.org/christmas-lectures/watch/1999/arrows-of-time/shaping-the-future?u
07:45
The Monty Hall Problem - Christmas Lectures with Ian Stewart

512 views / 0 likes - added 5 years ago

Ian Stewart explains the Monty Hall problem and its solution. Subscribe for regular science videos: http://bit.ly/RiSubscRibe The Monty Hall problem became infamous in the 1990s where newspaper columnist and puzzle solver Marilyn vos Savant offered a solu
09:10
Thermal Conduction, Convection, And Radiation

584 views / 0 likes - added 8 years ago

Fire as thermal conduction, convection, and radiation
03:47
How does GPS work? - Christmas Lecture with Neil Johnson

85 views / 0 likes - added 1 year ago

Neil Johnson shows how Global Positioning System devices use satellites and atomic clocks to work out your location.Subscribe for regular science videos: http://bit.ly/RiSubscRibeWatch the full first lecture of the series: http://www.rigb.org/christmas-le
59:38
Carl Sagan Christmas Lectures 3 - The History of Mars

134 views / 0 likes - added 1 year ago

Cold, arid, and tens of millions of miles away from Earth, Mars has intrigued scientists for centuries. The existence of liquid on its surface was confirmed by NASAs flyby mission, Mariner 4, in 1965, but the question of whether life exists on our neighbo
58:09
Eric Laithwaite 1974 RI Christmas Lectures, Lecture 3 "Jam Yesterday, Jam Tomorrow"

316 views / 0 likes - added 4 years ago

Professor Eric Laithwaite presents his second televised series of CHRISTMAS LECTURES exploring the world of engineering.A sequel to his 1966 series, 'The Engineer in Wonderland', Laithwaite was the first person to present two series of Lectures on nationa
23:04
George Gets Beaten by a Girl! | George Of The Jungle | Full Episode | Videos for Kids

87 views / 0 likes - added 11 months ago

Watch More George of the Jungle Videos : https://bit.ly/34Ax9sc Watch George of the Jungle Season 1: http://bit.ly/2vVMgL1George should never underestimate Ursula! Watch George of the Jungle Season 2: http://bit.ly/2uwmBsX Meet the Characters of George of
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Christmas Lectures 2011: Can you see anything strange?

90 views / 0 likes - added 1 year ago

The Croydon Juggling Club do a fantastic demonstration and Professor Bruce Hood asks the audience to count how many times the orange baton. Can you count how many? Do you notice anything else?This clip is part of the Christmas Lectures 2011 presented by P
23:04
Pink George | George Of The Jungle | Full Episode | Videos for Kids

91 views / 0 likes - added 11 months ago

Watch More George of the Jungle Videos : https://bit.ly/34Ax9sc Watch George of the Jungle Season 1: http://bit.ly/2vVMgL1George gets lost in a swirl of pink when he looks for the spirits of lunches past! Watch George of the Jungle Season 2: http://bit.ly
01:40
Christmas Lectures 2011: The Stroop Test

107 views / 0 likes - added 1 year ago

The Stroop Test involves reading the colour of words rather than the word itself. This is difficult in people who have damaged their frontal lobes because this part of the brain controls behaviour. This clip is part of the Christmas Lectures 2011 presente
1:02:16
George Goes Ape | George of the Jungle | 1 Hour Compilation | Cartoons For Kids

305 views / 2 likes - added 2 years ago

George discovers he's not actually an ape!George of the Jungle | Season 1 | Episode 12 | Brother George/Ape MitzvahGeorge spreads himself thin, and discovers he's not actually an ape!George of the Jungle | Season 1 | Episode 15 | Rainy Season/Love in the
59:14
Christmas Lectures 2021: The Perfect Storm - with Jonathan Van Tam

93 views / 0 likes - added 1 year ago

In the second lecture of the 2021 Christmas Lectures, Jonathan Van-Tam is joined by airborne infection expert Cath Noakes and mathematician Julia Gog is uncover what drives a virus to world domination, and how maths may be the secret weapon to thwart it.
59:14
Christmas Lectures 2021: The Invisible Enemy - with Jonathan Van Tam

107 views / 0 likes - added 1 year ago

In the first lecture of the 2021 Christmas Lectures, Jonathan Van Tam dives into the micro-world of viruses, revealing how these invisible invaders can infect our bodies, and how a revolution in testing may transform medicine forever with the help of immu
41:37
George VS Zombies | George of the Jungle | Compilation | Cartoons For Kids

297 views / 3 likes - added 2 years ago

George unleashes the zombies!George of the Jungle | Season 1 | Episode 11 | FrankenGeorge/Afraid of NothingGeorge accidentally unleashes a horde of zombie critters, and catches a campfire fright.George of the Jungle | Season 1 | Episode 3 | Cone Head/Cous
59:14
Christmas Lectures 2021: Fighting Back - with Jonathan Van Tam

97 views / 0 likes - added 1 year ago

In the third and final lecture of the 2021 Christmas Lectures, Jonathan Van-Tam is joined by vaccine scientist Teresa Lambe and microbiologist Sharon Peacock to explore the inner workings of vaccines to reveal how these medical marvels can help win the wa
06:03
Plates Moving Due to Convection in Mantle

527 views / 0 likes - added 9 years ago

Plates Moving Due to Convection in Mantle More free lessons at: http://www.khanacademy.org/video?v=f8GK2oEN-uI
05:19
Offering A Plant A Radioactive Cocktail - Christmas Lectures with Eric M Rogers

346 views / 0 likes - added 4 years ago

Eric M Rogers puts real radioactivity to use, demonstrating how a tomato plant drinks up radioactive water.Watch the full fourth lecture of the series: https://www.rigb.org/christmas-lectures/watch/1979/atoms-for-enquiring-minds/atoms-that-explode?utm_sou
59:15
The Truth about AI 2/3 - 2023 Christmas Lectures with Mike Wooldridge

57 views / 0 likes - added 3 months ago

'My AI Life' - Professor Mike Wooldridge reveals the huge role AI already plays in our daily lives, sometimes without us even realising what it is doing.This is the second of the 2023 CHRISTMAS LECTURES from the Royal Institution, supported by CGI, on the
44:23
Jacket George | George of the Jungle | Compilation | Cartoons For Kids

358 views / 0 likes - added 2 years ago

George always makes himself useful, even as a jacket...George of the Jungle | Season 2 | Episode 12 | My Georging JacketIt looks like George's reign as king is over when Tiger and Weevil paralyse him with a poisonous No-Licky Frog. But George proves that
59:14
The Truth about AI 1/3 - 2023 Christmas Lectures with Mike Wooldridge

60 views / 0 likes - added 3 months ago

'How to build an intelligent machine' - Professor Mike Wooldridge explores the nature of artificial intelligence. By using experiments and demonstrations, he investigates how AI learns and what it can do.This is the first of the 2023 Christmas Lectures fr
07:26
A Boy, a Robot and a Buzz Wire - Christmas Lectures with Leonard Maunder

522 views / 0 likes - added 5 years ago

Robots are remarkably good at some things that humans are not naturally so adept at. Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full fourth lecture of the series: http://www.rigb.org/christmas-lectures/watch/1983/machines-in
04:10
Brann the Clever Raven - 2017 CHRISTMAS LECTURES

471 views / 0 likes - added 6 years ago

Crows are known as some of the best problem solvers of the animal kingdom. In this clip from the 2017 CHRISTMAS LECTURES, Sophie Scott sets Brann the raven a tough puzzle. Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full lect
01:37
Christmas Lectures 2011: Change Blindness

93 views / 0 likes - added 1 year ago

Professor Bruce Hood shows an audience an images which changes with every blink, yet the audience fail to see big changes such as a disappearing tree and car. This is called change blindness. Everytime your eye blinks, your brain doesn't notice anything d
57:37
Richard Dawkins - CHRISTMAS LECTURES 1991 - Growing up in the Universe

102 views / 0 likes - added 1 year ago

The world-famous evolutionary biologist Richard Dawkins presents the Royal Institution CHRISTMAS LECTURES in 1991. Original broadcast live on the BBC, the series explored "our own growing knowledge of how life grows up in the universe."This is the first l
59:14
The Truth about AI 1/3 - 2023 Christmas Lectures with Mike Wooldridge

56 views / 0 likes - added 3 months ago

'How to build an intelligent machine' - Professor Mike Wooldridge explores the nature of artificial intelligence. By using experiments and demonstrations, he investigates how AI learns and what it can do.This is the first of the 2023 Christmas Lectures fr
59:15
The Truth about AI 2/3 - 2023 Christmas Lectures with Mike Wooldridge

46 views / 0 likes - added 2 months ago

'My AI Life' - Professor Mike Wooldridge reveals the huge role AI already plays in our daily lives, sometimes without us even realising what it is doing.This is the second of the 2023 CHRISTMAS LECTURES from the Royal Institution, supported by CGI, on the
05:07
Ape Communication - CHRISTMAS LECTURES 2017

550 views / 0 likes - added 6 years ago

Apes can learn human sign language but how do they communicate with each other in the wild? Sophie Scott and Cat Hobaiter investigate in this clip from the 2017 Christmas Lectures. Watch the full lecture: https://youtu.be/5aSfMh9ittI Subscribe for regular
01:27
Christmas Lectures 2011: Einstein Hollow Mask

92 views / 0 likes - added 1 year ago

Professor Bruce Hood shows an illusion which involves a sculpted face, but instead of the usual convex human face of a sculpture, the sculpture is flipped and we're shown the inside of the face but human brains find it hard to recognise it is convex until
03:33
Christmas Lectures 2012 - Worth your Weight in Gold

97 views / 0 likes - added 1 year ago

Dr Peter Wothers weighs a volunteer from the 2012 Christmas Lectures audience with 24 carat pure gold. Finding himself a little short of the right amount, he calls in help from famous chemist Sir Harry Kroto and his gold Nobel Prize medal (awarded in 1996
02:51
Christmas Lectures 2012 - Lighting a fire in 15% Oxygen

78 views / 0 likes - added 1 year ago

As part of Lecture One of his 2012 Christmas Lectures, 'The Modern Alchemist', Dr Peter Wothers visits a research lab near Cambridge where they are investigating new fire prevention technologies.Normal air contains 21% Oxygen. Will Peter be able to light
02:36
Christmas Lectures 2011: Bruce Hood demonstrates the kanizsa illusion

89 views / 0 likes - added 1 year ago

Professor Bruce Hood demonstratse the kanizsa illusion on the audience. The kanizsa illusion , named after the psychologist Gaetano Kanizsa, shows how our brain can create the illusion that an object exists when sections of a shape is removed. This clip i
04:09
Christmas Lectures 2011: Shrinking and Growing; The Ames Room

89 views / 0 likes - added 1 year ago

Reality is created by the brain and uses past experiences to make sense of the world. But Professor Bruce Hood shows things are not always what they seem and demonstrates this with the Ames room and the Ponzo illusion. Bruce shows the brain is decieved by
58:48
Christmas Lectures 2022: Lecture 2/3 with Sue Black

95 views / 0 likes - added 1 year ago

Professor Sue Black investigates a mysterious crime scene, and reveals some of the forensic techniques that are used to track down criminals. This is the second of the 2022 Royal Institution annual Christmas lectures.Watch the first lecture here: https://
05:23
George Washington and How Vaccines Work?

205 views / 0 likes - added 2 years ago

Vaccines are one of humanity’s greatest triumphs, and now save more lives than any other medical procedure. Before the COVID-19 pandemic, vaccines were mostly deployed against viruses that had plagued humans for centuries, such as measles and smallp
10:33
Porter the Explorer (1 of 30 in Human History)

417 views / 0 likes - added 4 years ago

Porter is 1 of less than 30 people to ever be diagnosed with Beare-Stevenson syndrome. His appearance is unique, but all Porter wants is to run outside and play on his teeter totter.SBSK Patreon: https://www.patreon.com/SBSK SBSK Socials:http://www.instag
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The Truth about AI 3/3 - 2023 Christmas Lectures with Mike Wooldridge

61 views / 0 likes - added 3 months ago

'The future of AI: dream or a nightmare?' Professor Mike Wooldridge is joined by leading experts to grapple with the future of AI. What opportunities and dangers lie ahead as AI continues to evolve?This is the third of the 2023 CHRISTMAS LECTURES from the
59:13
Christmas Lectures 2022: Lecture 1/3 with Sue Black

120 views / 0 likes - added 1 year ago

Discover the secrets of forensic science as Professor Dame Sue Black tells the story of a 1,000 year old skeleton, in the first of the Royal Institution's annual Christmas lectures for 2022. Watch the second lecture here: https://youtu.be/yIFcRjCq0TQWatch
59:13
Christmas Lectures 2022: Lecture 3/3 with Sue Black

105 views / 0 likes - added 1 year ago

Professor Sue Black investigates a heist in the Ri, and reveals how forensics works in the courtroom. This is is the third of the annual Royal Institution Christmas lectures for 2022.Watch the first lecture here: https://youtu.be/Bo18brJhK1IWatch the seco
46:02
What is generative AI and how does it work? The Turing Lectures with Mirella Lapata

55 views / 0 likes - added 5 months ago

How are technologies like ChatGPT created? And what does the future hold for AI language models?This talk was filmed at the Royal Institution on 29th September 2023, in collaboration with The Alan Turing Institute.Subscribe for regular science videos: htt
03:51 Popular
Simulating Tastes and Smells Using a Digital Lollipop - with Danielle George

723 views / 0 likes - added 6 years ago

We can use technology to send sounds and images to people far away – but what about our other senses? In this clip from the 2014 CHRISTMAS LECTURES "'Sparks will fly: How to hack your home", Danielle George demonstrates a device for sharing tastes and sme
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01:48
Haptic Technology Demonstration - with Danielle George

575 views / 0 likes - added 6 years ago

Haptic technology recreates the sensation of touch through forces and vibrations. In this clip from the 2014 CHRISTMAS LECTURES "Sparks will fly: How to hack your home", Danielle George and a young audience member experiment with haptic technology. This p
05:10
How one woman put man on the moon - Matt Porter & Margaret Hamilton

359 views / 0 likes - added 4 years ago

Learn how Margaret Hamilton and her team of engineers built the software for the Apollo 11 mission that landed mankind on the Moon. --The Apollo 11 moon landing was about the astronauts, mission control, software and hardware all working together as a sea
04:05
Laryngoscopy of an Opera Singer - 2017 CHRISTMAS LECTURES

567 views / 0 likes - added 6 years ago

With the help of a specialist doctor and an opera singer, Sophie Scott investigates how the different parts of the voice box come together to create the human voice. Watch the full lecture here: https://youtu.be/MbvoQoOn2YE Link to the site the monkey poi
04:13
Why is Norway Rising? - Christmas Lectures with James Jackson

335 views / 0 likes - added 3 years ago

Subscribe for regular science videos: http://bit.ly/RiSubscRibeThe Ri is on Patreon: https://www.patreon.com/TheRoyalInstitutionand Twitter: http://twitter.com/ri_scienceand Facebook: http://www.facebook.com/royalinstitutionand Tumblr: http://ri-science.t
02:04
Ri Christmas Lectures 2010 - Iron and Fireworks

91 views / 0 likes - added 1 year ago

Lecture 2 - Why Chocolate Melts and Jet Engines Don'tWhy does an iron rod just heat up in a bunsen burner flame whilst iron filling produce fireworks?We got in a pyrotechnics specialist for this one. It was definitely the biggest Bunsen burner anyone at t
02:15
Ri Christmas Lectures 2010 - Quantum Levitation

92 views / 0 likes - added 1 year ago

Lecture 3 - Why Are Mountains So Small?Is it possible to escape gravity? Tune in to find out...The first time Mark got into the harness to defy gravity it was unfortunately too tight in key places!The Ri is on Twitter: http://twitter.com/ri_scienceand Fac
04:41
2012 Christmas Lectures - Burning a Diamond

108 views / 0 likes - added 1 year ago

Dr Peter Wothers is assisted by Nobel prize winner Sir Harry Kroto. Subscribe for regular science videos: http://bit.ly/RiSubscRibeThe Ri is on Twitter: http://twitter.com/ri_scienceand Facebook: http://www.facebook.com/royalinstitutionand Tumblr: http://
1:52:16
Faraday Lectures 2021 - Holiday Chemistry Show

108 views / 0 likes - added 1 year ago

Join chemistry professors Janis Louie and Tom Richmond as they perform an extraordinary series of chemical experiments that educate and entertain audiences of all ages. This year, the event will feature friend of the chemistry department, Tom Thatcher. To
01:56
Sesame Street: Billy Porter Sings About Making Friends!

558 views / 0 likes - added 3 years ago

Billy Porter sings about making friends with Elmo, and Abby! When you don't know someone and are feeling shy, try saying hi! You might end up making friends with a penguin!--Subscribe to the Sesame Street Channel here: http://www.youtube.com/subscription_
58:47
"Beware!" David Attenborough 1973 RI Christmas Lectures, Lecture 1

185 views / 0 likes - added 2 years ago

Animals must defend themselves not only against other creatures that want to eat them, but sometimes against creatures of their own kind.The first line of defense that animals use is warning. To warn off danger, many creatures will adopt alarm signals to
02:50
Transcranial Magnetic Stimulation of the Brain - Royal Institution Christmas Lectures - BBC Four

95 views / 0 likes - added 1 year ago

Subscribe and to the BBC https://bit.ly/BBCYouTubeSubWatch the BBC first on iPlayer https://bbc.in/iPlayer-Home More about this programme: http://www.bbc.co.uk/programmes/b018l6vy Professor Bruce Hood uses a magnet to show that the brain uses electrical s
04:22 Popular
What Is Fat? - George Zaidan

2,100 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/what-is-fat-george-zaidan As the narrative goes, fat is bad. Well, it's actually more nuanced than that. The type of fat you eat is more impactful on your health than the quantity. George Zaidan examines triglyc
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01:08 Popular
George Washington Explained In One Minute

1,051 views / 6 likes - added 8 years ago

A 60 second primer on the Presidency of George Washington. Check out a longer video on George here! https://www.youtube.com/watch?v=kKse8QlzgiM And over 400 videos at www.hiphughes.com
01:02
Colorful Convection Currents - Sick Science! #075

628 views / 0 likes - added 3 years ago

The SICK Science series was created by Steve Spangler. 2010 Steve Spangler, Inc. All Rights ReservedSteve Spangler is a bestselling author, STEM educator and Emmy award-winning television personality with more than 1,500 television appearances to his cred
20:58
Ursula's New Pet | George of the Jungle | Full Episode | Cartoons For Kids

370 views / 1 likes - added 2 years ago

Ursula adopts a rather dangerous new pet!George of the Jungle | Season 1 | Episode 1 | Beetle Invasion/Naked Ape ManUrsula's new pet beetle threatens to destroy the forest, and George loses his loincloth! Watch More George of the Jungle Videos :https://bi
04:49 Popular
Exploring Other Dimensions - Alex Rosenthal And George Zaidan

877 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/exploring-other-dimensions-alex-rosenthal-and-george-zaidan Imagine a two-dimensional world -- you, your friends, everything is 2D. In his 1884 novella, Edwin Abbott invented this world and called it Flatland. A
03:51
How do cancer cells behave differently from healthy ones? - George Zaidan

661 views / 1 likes - added 6 years ago

View full lesson: http://ed.ted.com/lessons/how-do-cancer-cells-behave-differently-from-healthy-ones-george-zaidan How do cancer cells grow? How does chemotherapy fight cancer (and cause negative side effects)? The answers lie in cell division. George Zai
03:48 Popular
What Is The Shape Of A Molecule? - George Zaidan And Charles Morton

1,432 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/what-is-the-shape-of-a-molecule-george-zaidan-and-charles-morton A molecule is nearly all empty space, apart from the extremely dense nuclei of its atoms and the clouds of electrons that bond them together. When
03:34 Popular
How Atoms Bond - George Zaidan And Charles Morton

770 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/how-atoms-bond-george-zaidan-and-charles-morton Atoms can (and do) bond constantly; it's how they form molecules. Sometimes, in an atomic tug-of-war, one atom pulls electrons from another, forming an ionic bond.
03:52 Popular
All Of The Energy In The Universe Is... - George Zaidan And Charles Morton

1,212 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/all-of-the-energy-in-the-universe-is-george-zaidan-and-charles-morton The energy in the universe never increases or decreases -- but it does move around a lot. Energy can be potential (like a stretched-out rubbe
03:56 Popular
Why Does Ice Float In Water? - George Zaidan And Charles Morton

1,130 views / 3 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/why-does-ice-float-in-water-george-zaidan-and-charles-morton Water is a special substance for several reasons, and you may have noticed an important one right in your cold drink: ice. Solid ice floats in liquid
05:28 Popular
From The Top Of The Food Chain Down: Rewilding Our World - George Monbiot

1,019 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/from-the-top-of-the-food-chain-down-rewilding-our-world-george-monbiot Our planet was once populated by megafauna, big top-of-the-food-chain predators that played their part in balancing our ecosystems. When tho
04:43 Popular
Why Aren't We Only Using Solar Power? - Alexandros George Charalambides

1,272 views / 3 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/why-aren-t-we-only-using-solar-power-alexandros-george-charalambides Solar power is cheaper and more sustainable than our current coal-fueled power plants, so why haven't we made the switch? The real culprits he
04:01 Popular
The Operating System Of Life - George Zaidan And Charles Morton

838 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/the-operating-system-of-life-george-zaidan-and-charles-morton Humans, octopi and pine trees alike are all made up of cells, tiny but sophisticated systems that keep life going. Cells are almost like tiny factori
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The Strengths And Weaknesses Of Acids And Bases - George Zaidan And Charles Morton

946 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/the-strengths-and-weaknesses-of-acids-and-bases-george-zaidan-and-charles-morton Vinegar may have a powerful smell, but did you know it's actually a weak acid? In the chemical economy, acids actively give away t
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George Washington Carver: Bigger than peanuts

749 views / 0 likes - added 3 years ago

Thanks to Skillshare for sponsoring this video! The first 1,000 people who click this link will get two free months of Skillshare Premium: https://skl.sh/adamragusea12***SOURCE TEXTS***"George Washington Carver: In His Own Words," Gary Kremer: https://boo
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The Uncertain Location Of Electrons - George Zaidan And Charles Morton

963 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/the-uncertain-location-of-electrons-george-zaidan-and-charles-morton The tiny atoms that make up our world are made up of even tinier protons, neutrons and electrons. Though the number of protons determines an a
23:04
Jungle Pool Party | George Of The Jungle | Full Episode | Videos for Kids

169 views / 0 likes - added 11 months ago

Watch More George of the Jungle Videos : https://bit.ly/34Ax9sc Watch George of the Jungle Season 1: http://bit.ly/2vVMgL1Even in the jungle, people love a pool party! Watch George of the Jungle Season 2: http://bit.ly/2uwmBsX Meet the Characters of Georg
09:22 Popular
How Did George Washington Die

1,394 views / 7 likes - added 7 years ago

→Subscribe for new videos every day! https://www.youtube.com/user/TodayIFoundOut?sub_confirmation=1 →How "Dick" came to be short for 'Richard': https://youtu.be/BH1NAwwKtcg?list=PLR0XuDegDqP2Acy6g9Ta7hzC0Rr3RDS6q Never run out of things to say at the wate
03:25 Popular
If Molecules Were People... - George Zaidan And Charles Morton

936 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/chemical-reactions-zaidan-and-morton When molecules collide, chemical reactions can occur -- causing major structural changes akin to getting a new arm on your face! George Zaidan and Charles Morton playfully im
16:17 Popular
A Lab The Size Of A Postage Stamp - George Whitesides

812 views / 1 likes - added 8 years ago

Traditional lab tests for disease diagnosis can be too expensive and cumbersome for the regions most in need. George Whitesides' ingenious answer is a foolproof tool that can be manufactured at virtually zero cost. (Filmed at TEDxBoston.) Talk by George W
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How Curious George Escaped Nazi Germany

622 views / 0 likes - added 6 years ago

Curious George is the mischievous child that still lives inside us all, a swinging catastrophe with an envious joie de vivre. But everyone’s favorite chimp almost didn’t make it to the page. The story goes way back to 1940 as Nazi forces prepared to invad
04:17 Popular
How Encryption Keys Work - with Chris Bishop

1,406 views / 1 likes - added 6 years ago

What does the padlock icon on your internet browser mean and why is encryption important? In this clip from 2008 CHRISTMAS LECTURES "Hi-tech trek", Chris Bishop uses coloured water to demonstrate how information is transferred on the internet. Subscribe f
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04:53
The Case Of The Missing Fractals - Alex Rosenthal And George Zaidan

683 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/the-case-of-the-missing-fractals-alex-rosenthal-and-george-zaidan A bump on the head, a mysterious femme fatale and a strange encounter on a windswept peak all add up to a heck of a night for Manny Brot, Private
02:37 Popular
KIDZ BOP Kids - Blue Christmas (Christmas Wish List)

918 views / 2 likes - added 8 years ago

KIDZ BOP Kids - “Blue Christmas" featured on the album, KIDZ BOP Christmas Wish List! iTunes: http://bit.ly/kbchristmaswishlistitunes Amazon: http://bit.ly/kbchristmaswishlistamazon Google Play: http://bit.ly/kbchristmaswishlistgoogle Spotify: http://bit.
03:19 Popular
KIDZ BOP Kids - All I Want For Christmas Is You (Christmas Wish List)

1,278 views / 9 likes - added 8 years ago

KIDZ BOP Kids - “All I Want For Christmas," featured on the album, KIDZ BOP Christmas Wish List: iTunes: http://bit.ly/kbchristmaswishlistitunes Amazon: http://bit.ly/kbchristmaswishlistamazon Google Play: http://bit.ly/kbchristmaswishlistgoogle Spotify:
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Frozen Christmas | Elsa | Christmas Baking | Elsa Shoe Cake | Disney Princess | Merry Christmas

946 views / 1 likes - added 7 years ago

Try these amazing Frozen Christmas Treats this weekend :) Check out the most delicious recipes : Best Cake Recipes https://www.youtube.com/watch?v=MmuK9Jd2OeQ&list=PLX_YcFisZdwe1IAqTqsLZ5Smtqb8padlA&feature=iv&src_vid=nYqkLj2o7vI&annotation_id=video%3Ab71
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Why Is Ketchup So Hard To Pour? - George Zaidan

657 views / 0 likes - added 9 years ago

View full lesson: http://ed.ted.com/lessons/why-is-ketchup-so-hard-to-pour-george-zaidan Ever go to pour ketchup on your fries...and nothing comes out? Or the opposite happens, and your plate...
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08:36 Popular
CHRISTMAS CARTOON: Christmas Comes But Once a Year (1936) [HD 1080] [Cartoons for Children]

933 views / 1 likes - added 7 years ago

Christmas Comes But Once a Year (1936) - A Grampy Cartoon In an orphanage on Christmas morning, all the orphans jump out of bed and head to the hall, singing the title song. They grab the toys from their stockings, and get ready to play with them. However
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KIDZ BOP Kids - Last Christmas (Christmas Wish List)

1,150 views / 5 likes - added 8 years ago

KIDZ BOP Kids - “Last Christmas" featured on the album, KIDZ BOP Christmas Wish List: iTunes: http://bit.ly/kbchristmaswishlistitunes Amazon: http://bit.ly/kbchristmaswishlistamazon Google Play: http://bit.ly/kbchristmaswishlistgoogle Spotify: http://bit.
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Why your phone battery gets worse over time - George Zaidan

84 views / 0 likes - added 8 months ago

Explore the science of why single-use and rechargeable batteries die, and find out why recycling batteries can be challenging.--Almost all batteries, even single-use batteries, are theoretically rechargeable. Thats because the metals and other chemicals a
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4 epidemics that almost happened (but didn't) - George Zaidan

89 views / 0 likes - added 11 months ago

What makes for an effective outbreak response? Explore successful systems from around the world that prevented epidemics.--In 2013, an Ebola outbreak began in Guinea. The country had no formal response system and the outbreak became the largest Ebola epid
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Curious George Inspired Sock Monkey Craft | Crafts For Kids W/ Crafty Carol | Cool School

1,346 views / 1 likes - added 8 years ago

Happy Holidays! Crafty Carol gets inspired by "Curious George: A Very Monkey Christmas" and shows you how to make your very own sock monkey holiday ornament! Let's get crafty! See more with Curious George right here! https://www.youtube.com/watch?v=OlgNlQ
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The Story of George Washington Carver

953 views / 15 likes - added 3 years ago

Squeaks has a big problem! Every year, he grows lettuce in the Fort's greenhouse, but this year it just won't grow. Luckily, Mister Brown knows someone who can help Squeaks and his lettuce: botanist and inventor George Washington Carver!----------------SO
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5 Magical Christmas Cookies | Christmas Dessert | Festive Recipes to Sweeten Your Holidays!

77 views / 0 likes - added 4 months ago

Hoopla Recipes brings you a series of exciting Christmas dessert ideas and recipes that will be a hit during this festive season! Christmas cookies, brownies, angel cookies, yule log cake and more! So grab your mittens, heat your ovens and get ready to ba
05:31 Popular
How 18th-Century Medicine Killed George Washington

1,060 views / 6 likes - added 8 years ago

What killed George Washington? Turns out it was probably related to the bloodletting and other 18th-century medicine his doctors applied. Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow Dooblydoo thanks go to the following
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Ethical dilemma: The burger murders - George Siedel and Christine Ladwig

573 views / 1 likes - added 3 years ago

Whats the best way to handle a crisis in business? Dig into how different strategies can work when faced with an ethical dilemma.--You founded a company that manufactures meatless burgers that are sold in stores worldwide. But youve recently received awfu
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Would George Orwell have had a smartphone? | BBC Ideas

207 views / 0 likes - added 3 years ago

George Orwell's novel Nineteen Eighty-Four was published more than 70 years ago in 1949. 1984 imagines a society controlled by Big Brother, where people are monitored by the state using advanced technology. If George Orwell were alive today would he be wo
02:38 Popular
KIDZ BOP Kids - Christmas (Baby Please Come Home) (Official Music Video) [KIDZ BOP Christmas]

1,714 views / 8 likes - added 5 years ago

Official music video of The KIDZ BOP Kids performing 'Christmas (Baby Please Come Home)' from KIDZ BOP Christmas! Listen to KIDZ BOP Christmas: http://smarturl.it/KIDZBOP_Christmas See KIDZ BOP live in concert: https://bit.ly/kbtour
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Who was George Washington?

92 views / 1 likes - added 7 months ago

The story of George Washingtons life and legacy as father of our country.Untold is a free collection of short, compelling, history videos and animations designed to engage new audiences in a new conversation and shine a light on the stories that dont alwa
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FUN Christmas Dessert Ideas | Yummy DIY SNOWMAN CUPCAKES and More Christmas Treats

710 views / 1 likes - added 6 years ago

Bring Home The Joy of Christmas This Season With These Awesome, Yummy and Adorable Christmas Desserts! Check out the most delicious recipe : Subscribe to our channel for more updates: https://goo.gl/goaCNi Click here to learn how to make Play Doh Without
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Rudolph The Red Nosed Reindeer Song | Christmas Songs For Kids | Christmas Special Songs

2,458 views / 4 likes - added 8 years ago

Enjoy this famous and melodious Christmas song, Rudolph the Red Nosed Reindeer only on Peekaboo. As Christmas is just around the corner, let us all sing along and enjoy the spirit of Christmas with this beautiful and popular Christmas song Rudolph the Red
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KIDZ BOP Kids - Go Christmas (Official Music Video) [KIDZ BOP Christmas]

1,270 views / 7 likes - added 5 years ago

Official music video of The KIDZ BOP Kids performing 'Go Christmas!' from KIDZ BOP Christmas! Listen to KIDZ BOP Christmas: http://smarturl.it/KIDZBOP_Christmas See KIDZ BOP live in concert: https://bit.ly/kbtour
02:47 Popular
KIDZ BOP Kids - Have Yourself A Merry Little Christmas (Acapella) [KIDZ BOP Christmas]

1,051 views / 3 likes - added 5 years ago

Official music video of The KIDZ BOP Kids performing 'Have Yourself A Merry Little Christmas (Acapella)' from KIDZ BOP Christmas! Listen to KIDZ BOP Christmas: http://smarturl.it/KIDZBOP_Christmas See KIDZ BOP live in concert: https://bit.ly/kbtour
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[OFFICIAL VIDEO] Making Christmas (from 'The Nightmare Before Christmas') - Pentatonix

692 views / 1 likes - added 5 years ago

OUR NEW HOLIDAY ALBUM 'CHRISTMAS IS HERE!' WILL BE AVAILABLE EVERYWHERE ON OCTOBER 26TH! GET THE NEW SONG "MAKING CHRISTMAS" NOW! http://smarturl.it/xPtxMCx iTunes - http://smarturl.it/xPtxMCx/itunes?iQid=yt Apple Music - http://smarturl.it/xPtxMCx/applem
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The bug that poops candy - George Zaidan

404 views / 0 likes - added 4 years ago

Download a free audiobook version of "Ingredients" and support TED-Ed's nonprofit mission: https://www.audible.com/ted-edCheck out our full book recommendation: https://shop.ed.ted.com/collections/ted-ed-book-recommendations/products/ingredients--Aphids c
02:53 Popular
George Washington (1732-1799) President of the USA

923 views / 5 likes - added 6 years ago

Figures in History: George Washington (1732-1799) George Washington was born on 22 February 1732 in Westmoreland County, Virginia, into a family of prosperous farmers. He began his career as a professional surveyor in 1749 at the age of 17 and was quickly
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Picture Perfect: George Eastman House

717 views / 3 likes - added 9 years ago

Located on historic East Avenue in Rochester, New York, this special showcases the 12.5-acre museum site that was the urban estate of George Eastman, founder of Eastman Kodak Company. The Museum focuses on the 150-year history of the art, technology, and
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A Big Christmas Stick | Cracking Christmas | Horrible Histories

29 views / 0 likes - added 2 months ago

Queen Charlotte surprises King George III with festive foliage from her native Germany.Subscribe for more Horrible Histories: http://bit.ly/HorribleHistoriesSubscribeGet more episode of Horrible Histories as well as all the extras on BBC iPlayer:https://w
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CHRISTMAS CARTOON: The Little King in "Christmas Night" aka "Pals" (1933) [HD Children]

999 views / 1 likes - added 7 years ago

The Little King in "Christmas Night" (aka "Pals", 1933) Christmas Cartoon Van Beuren Studios RKO Radio Pictures Cartoon Characters: The Little King, Two Hobos, Queen, Santa Claus. Directed By James Tyer. Produced By Amadee J. Van Beuren. Written By Otto S
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How To Draw George From Peppa Pig

173 views / 0 likes - added 1 year ago

We love Peppa Pig! We thought it would be a lot of fun to learn how to draw George! We hope you and your kids have fun following along with us. Art Supplies ~ This is a list of the supplies we used, but feel free to use whatever you have in your home or c
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How to Draw AMONG US Christmas Elf | Christmas #5

1,188 views / 4 likes - added 3 years ago

Learn How to Draw the cute Among Us Game Christmas Elf Hat easy, step by step drawing lesson tutorial. Among Us Costume Christmas skin crewmate or imposter. How to Draw Among Us Easy: https://www.youtube.com/watch?v=hVqo2r1hFpw&list=PLbVzRnseEFtzhJbUKJO0l
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Jetsons & WWE Robo-Wrestlemania | George to the Rescue

720 views / 0 likes - added 6 years ago

He may not always get things right, but George Jetson is there in a crisis! WBKids is the home of all of your favorite clips featuring characters from the Looney Tunes, Scooby-Doo, Tom and Jerry and More! Available now on DVD! All Warner Bros. related cha
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DIY Christmas Treats | Christmas Tree Cupcakes | Learn How To Cook With HooplaKidz Recipes

1,396 views / 2 likes - added 8 years ago

Learn how to make these adorable Christmas Tree Cupcakes at home, perfect DIY Christmas Treats for this Holidays!, learn how to Bake with this easy DIY Recipes for kids, for more quick and easy recipes click: https://www.youtube.com/watch?v=TpuBNVne7p0&li
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How To Draw George Washington Carver

564 views / 2 likes - added 2 years ago

Today, we're learning how to draw George Washington Carver! We hope you and your kids have a lot of fun drawing this amazing historic person. Art Supplies ~ This is a list of the supplies we used, but feel free to use whatever you have in your home or cla
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How to Draw AMONG US Christmas Present Christmas #8

911 views / 3 likes - added 3 years ago

It's my birthday today Cuties! What a perfect drawing to celebrate with this Among Us Present Hat. Learn How to Draw the cute Among Us Game Christmas Gift Box Hat easy, step by step drawing lesson tutorial. Among Us Costume Christmas skin crewmate or impo
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How To Draw A Cartoon George Washington

1,610 views / 7 likes - added 8 years ago

Learn how to draw a cartoon George Washington! EMAIL A PHOTO OF YOUR ART: myart@artforkidshub.com MAIL US YOUR ART: Art for Kids Hub P.O. Box 927 Pleasant Grove, UT 84062 SUBSCRIBE for regular drawing and art lessons: http://bit.ly/afksubscribe Visit AFK
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What's in Peanut Butter? | Ingredients With George Zaidan (Episode 7)

774 views / 0 likes - added 7 years ago

Crunchy versus creamy, runny versus solid ... there’s a lot more to peanut butter than just peanuts and salt. ➡ Subscribe: http://bit.ly/NatGeoSubscribe ➡ Watch all episodes of Ingredients here: http://bit.ly/WatchIngredients ➡ New episodes every Thursday
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Tomorrowland Official Trailer #2 (2015) - George Clooney, Britt Robertson Movie HD

720 views / 0 likes - added 9 years ago

Subscribe to TRAILERS: http://bit.ly/sxaw6h Subscribe to COMING SOON: http://bit.ly/H2vZUn Like us on FACEBOOK: http://goo.gl/dHs73 Follow us on TWITTER: http://bit.ly/1ghOWmt Tomorrowland Official Trailer #2 (2015) - George Clooney, Britt Robertson Movie
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What's in Conditioner? | Ingredients With George Zaidan (Episode 8)

714 views / 0 likes - added 7 years ago

Conditioner: It makes your hair silky, smooth, and it’s a lot like … fat. ➡ Subscribe: http://bit.ly/NatGeoSubscribe ➡ Watch all episodes of Ingredients here: http://bit.ly/WatchIngredients ➡ New episodes every Thursday ➡ Get updates and tweet episode ide
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Toothpaste | Ingredients With George Zaidan (Episode 1)

873 views / 0 likes - added 7 years ago

Ancient toothpaste used stuff like rocks and bones -- and modern toothpaste isn’t all that different. Watch as chemist George Zaidan tries to create his own homemade toothpaste. ➡ Subscribe: http://bit.ly/NatGeoSubscribe ➡ Watch all episodes of Ingr
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05:50 Popular
Lipstick | Ingredients With George Zaidan (Episode 2)

804 views / 1 likes - added 7 years ago

Ground-up bugs? Rust? There might be some unexpected ingredients in your lipstick. ➡ Subscribe: http://bit.ly/NatGeoSubscribe ➡ Get updates and tweet episode ideas @georgezaidan ➡ New episodes every Thursday About Ingredients: Join MIT-trained chemist and
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Nail Polish | Ingredients With George Zaidan (Episode 4)

768 views / 1 likes - added 7 years ago

Nail polish has a LOT of ingredients. Here's why. ➡ Subscribe: http://bit.ly/NatGeoSubscribe ➡ Watch all episodes of Ingredients here: http://bit.ly/WatchIngredients ➡ New episodes every Thursday ➡ Get updates and tweet episode ideas @georgezaidan About I
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Shaving Foam | Ingredients With George Zaidan (Episode 3)

744 views / 0 likes - added 7 years ago

What gives shaving foam its lathery goodness? EXPLOSIVES!!! Just kidding. (Sort of.) ➡ Subscribe: http://bit.ly/NatGeoSubscribe ➡ Get updates and tweet episode ideas @georgezaidan ➡ New episodes every Thursday About Ingredients: Join MIT-trained chemist a
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10 Holiday Desserts to Eat While Waiting for Santa! MAGICAL DIY CHRISTMAS Treat | Christmas Brownies

424 views / 2 likes - added 4 years ago

Christmas brownieshttps://bit.ly/2pfjXZYhttps://bit.ly/35uXGrVSubscribe to our channel for more updates: https://goo.gl/swwHz6Please leave your comments or feel free to discuss in the comments section. Your feedback will be appreciated. Thanks for watchin
07:15 Popular
What Makes Gum Chewy? | Ingredients With George Zaidan (Episode 5)

774 views / 3 likes - added 7 years ago

What makes gum stay chewy for so long? ALL THE THINGS. ➡ Subscribe: http://bit.ly/NatGeoSubscribe ➡ Get updates and tweet episode ideas @georgezaidan ➡ New episodes every Thursday ➡ Watch all episodes of Ingredients here: http://bit.ly/WatchIngredients Ab

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