How Do Vending Machines Detect Fake Coins?
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This machine can decipher coins with pinpoint accuracy. Light sensors measure the size while electromagnets detect the metal type of the coin.
MACHINES: HOW THEY WORK
Thursdays 10/9c on Science
http://www.sciencechannel.com/tv-shows/machines-how-they-work/
Subscribe to Science Channel:
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Check out SCI2 for infinitely awesome science videos. Every day.
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http://testu.be/1ndmmMq
MACHINES: HOW THEY WORK
Thursdays 10/9c on Science
http://www.sciencechannel.com/tv-shows/machines-how-they-work/
Subscribe to Science Channel:
http://bit.ly/SubscribeScience
Check out SCI2 for infinitely awesome science videos. Every day.
http://bit.ly/SCI2YT
Download the TestTube app:
http://testu.be/1ndmmMq
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