00:04:00
Photocopier
Bill uses power tools to take apart a photocopier. He shows how it works, and shares the story of its invention by Chester Carlson.
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00:03:00
The Cell Phone
Bill invades a cell phone store to show that the design of a mobile isn't arbritary. Engineers uses seven basic principles to create a useful phone.
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00:03:00
The Transistor
Bill examines the first transistor ever built. He explains how it works, and its impact on our world today. And, also, he even tests it out!
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00:05:00
The Transistor 2
Bill shows how a transistor works by examing a replica of the first one ever build: The Bardeen-Brattain point contact transistor.
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