How Do Vending Machines Detect Fake Coins?
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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Narrator: WHEN YOU'RE HUNGRY,YOU NEVER QUITE HAVE THE RIGHT COINSFOR THE SNACK YOU WANT.HOW DOES THE MACHINE KNOW TO SEND BACK ANYTHING FAKEAND KEEP TRACK OF HOW MUCH YOU'VE PAID?THE MACHINE DECIPHERS COINS WITH PINPOINT ACCURACY.LIGHT SENSORS MEASURE THE SIZE,AND ELECTROMAGNETS DETECT THE METAL TYPE,IDENTIFYING THE COINS IN SPLIT SECONDSAND SORTING THEM INTO COLUMNS,DIVERTING FAKES TO THE REJECT CHUTE.WHEN CHANGE IS DUE,THE COLUMNS CAREFULLY RELEASE ONE COIN AT A TIME......TUMBLING INTO THE CHUTE.THESE 85 PARTS WORK TOGETHERTO COUNT 15,000 COINS A YEARAND RELEASE YOUR SNACK AT THE TOUCH OF A BUTTON.BUT WHEN YOU'RE HUNGRY,THERE'S NOTHING MORE FRUSTRATING THAN YOUR SNACK GETTING STUCK.HOW DO TODAY'S GENERATION OF VENDING MACHIN...
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Narrator: WHEN YOU'RE HUNGRY,YOU NEVER QUITE HAVE THE RIGHT COINSFOR THE SNACK YOU WANT.HOW DOES THE MACHINE KNOW TO SEND BACK ANYTHING FAKEAND KEEP TRACK OF HOW MUCH YOU'VE PAID?THE MACHINE DECIPHERS COINS WITH PINPOINT ACCURACY.LIGHT SENSORS MEASURE THE SIZE,AND ELECTROMAGNETS DETECT THE METAL TYPE,IDENTIFYING THE COINS IN SPLIT SECONDSAND SORTING THEM INTO COLUMNS,DIVERTING FAKES TO THE REJECT CHUTE.WHEN CHANGE IS DUE,THE COLUMNS CAREFULLY RELEASE ONE COIN AT A TIME......TUMBLING INTO THE CHUTE.THESE 85 PARTS WORK TOGETHERTO COUNT 15,000 COINS A YEARAND RELEASE YOUR SNACK AT THE TOUCH OF A BUTTON.BUT WHEN YOU'RE HUNGRY,THERE'S NOTHING MORE FRUSTRATING THAN YOUR SNACK GETTING STUCK.HOW DO TODAY'S GENERATION OF VENDING MACHIN...
