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There's No Such Thing As Cold

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 Biology   |   Chemistry   |   Health   |   Physics   |   Psychology   |   Science
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If cold isn’t real, then how can I feel it?
Subscribe to It’s Okay To Be Smart: http://bit.ly/iotbs_sub
↓ More info and sources below ↓

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You’vefelt cold before. Sometimes it’s cold outside. But what if I told you that “cold” isn’t real? There’s no substance or quantity called “cold” in science. We can’t measure the amount of “cold” in something. Instead it’s about what’s NOT there. In this week’s video, learn thedifference between heat and temperature, why a wind makes us feel colder, and what it’s like to live as a mass of jiggling atoms. This is the physics of cold.

Cool PBS NOVA episode on the search for absolute zero: https://www.youtube.com/watch?v=y2jSv8PDDwA

Richard Feynman on jiggling atoms: http://youtu.be/v3pYRn5j7oI

The movement of atoms in a wind: http://www.newton.dep.anl.gov/askasci/chem03/chem03448.htm

Why a breeze feels cool: http://physics.stackexchange.com/questions/72163/why-does-a-breeze-of-wind-make-us-feel-cooler

Density of the interstellar medium: http://en.wikipedia.org/wiki/Interstellar_medium

Have an idea for an episode or an amazing science question you want answered? Leave a comment below!

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It’s Okay To Be Smart is written and hosted by Joe Hanson, Ph.D.
Follow me on Twitter: @jtotheizzoe
Email me: itsokaytobesmart AT gmail DOT com
Facebook: http://www.facebook.com/itsokaytobesmart
Google+ https://plus.google.com/+itsokaytobesmart
For more awesome science, check out: http://www.itsokaytobesmart.com
Produced by PBS Digital Studios: http://www.youtube.com/user/pbsdigitalstudios

Joe Hanson - Creator/Host/Writer
Joe Nicolosi - Director
Amanda Fox - Producer, Spotzen Inc.
Kate Eads - Associate Producer
Andrew Matthews - Editing/Motion Graphics
Katie Graham - Director of Photography
John Knudsen - Gaffer
Dalton Allen - Post-Production Intern

Theme music:
“Ouroboros” by Kevin MacLeod

Other music via APM

Stock images from Shutterstock

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Last week’s video:
How many smells can you smell? https://www.youtube.com/watch?v=-yEtBps-BnI

More videos:
Why Are Some People Left-Handed? https://www.youtube.com/watch?v=NPvMUpcxPSA
Why Did We Blow on NES Games? https://www.youtube.com/watch?v=4Gf9mtXnJfMThe Science of Game of Thrones - https://www.youtube.com/watch?v=Utu-LpJn3Is
There Was No First Human - https://www.youtube.com/watch?v=xdWLhXi24Mo
How The Elements Got Their Names - https://www.youtube.com/watch?v=mtg9p6A6xnY

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