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  • 06:52 Trebuchet Throwing Balls of Fire ///. Homemade Science with Bruce Yeany

    Trebuchet Throwing Balls of Fire ///. Homemade Science with Bruce Yeany

    88 views / 0 likes - added

    The ancient trebuchet was a massive weapon that was most commonly thought of as throwing boulders at the walls of a castle under siege. However, it is also believed that it was used to also throw other materials as well. One of the favorite themes in movi

  • 04:27 Punkin Chunkin Trebuchet // Homemade Science with Bruce Yeany

    Punkin Chunkin Trebuchet // Homemade Science with Bruce Yeany

    393 views / 0 likes - added

    Our biggest trebuchet is for throwing pumpkins. It is able to throw 8 pound pumpkins over 600 feet, lighter ones even further. The counterweight can range from 700 to 1100 pounds.

  • 02:34 The Trebuchet (Medieval Period)

    The Trebuchet (Medieval Period)

    297 views / 1 likes - added

    The Trebuchet was similar to a giant catapult or stave sling, and launched heavy stones into enemy castles or walls. Please consider supporting our videos on Patreon https://www.patreon.com/simplehistory Please do not reupload our content! SIMPLE HISTORY

  • 09:26 Energy&Chemistry: Crash Course Chemistry #17

    Energy&Chemistry: Crash Course Chemistry #17

    324 views / 0 likes - added

    Grumpy Professor Hank admits to being wrong about how everything is chemicals. But he now wants you to listen as he blows your mind with a new sweeping statement: everything (yes, really everything this time) is energy. What?! This week, Hank takes us on

  • 06:00 Homemade Science Demonstrations with Bruce Yeany

    Homemade Science Demonstrations with Bruce Yeany

    98 views / 0 likes - added

    Welcome to my science channel, here are a few examples of some of the interesting materials and activities that I've posted over the last 5 years . Over 170 videos of demonstrations and activities that I've found interesting and helpful as a middle school

  • 05:59 Gravity Powered Escapement Wheel....  Simple machine lesson

    Gravity Powered Escapement Wheel.... Simple machine lesson

    86 views / 0 likes - added

    This escapement wheel is a good example of showing how simple machines work together in the performance of a task, in this case turning a flywheel. I have found that students have a natural curiosity to explore these types of devices and are very interest

  • 06:17 I made a catapult to launch marshmallows! Thanks, Leonardo da Vinci.

    I made a catapult to launch marshmallows! Thanks, Leonardo da Vinci.

    46 views / 0 likes - added

    Its time to make a catapult.Welcome to our first-ever week of programming for kids! We wanted to launch some marshmallows, so we built a miniature machine based on Leonardo da Vincis designs.Leonardo da Vinci was a famous artist and inventor, and his sket

  • 03:24 Why Do So Many Price Tags End In .99?

    Why Do So Many Price Tags End In .99?

    474 views / 1 likes - added

    It’s very common to see the number 9 at the right end of a price tag. Why is this? Lauren explains the psychology of prices and nines in this episode of BrainStuff. Learn more at HowStuffWorks.com. Share on Facebook: Share on Twitter: Subscribe: htt

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