Search Results: "Farnham"

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• 07:49

  Disappearing Ink Experiments!

  441 views / 0 likes - added 5 years ago

  Craig Beals explains how some ink can disappear when heated and reappear when cooled. Thermochromic ink pens are filled with leuco dyes which change shape as they are heated or cooled. When these thermochromic dyes heat up and reach a certain temperature

• 04:11

  How does a Lightsaber work?

  573 views / 0 likes - added 5 years ago

  The most fascinating technology in the Star Wars universe is the lightsaber. In this video I show you how they work! Okay so...lightsabers aren't real...but it's still fun to think about. Thanks for watching! Get your light saber here: http://amzn.to/2BCN

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