How Do Vending Machines Detect Fake Coins?
					 
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            gepubliceerd op 12 Apr 2022 / In 
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         MACHINES: HOW THEY WORK 
Thursdays 10/9c on Science 
This machine can decipher coins with pinpoint accuracy. Light sensors measure the size while electromagnets detect the metal type of the coin. 
 
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http://www.sciencechannel.com/....tv-shows/machines-ho 
 
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https://www.sciencechannelgo.c....om/machines-how-they 
 
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