How to spot a counterfeit bill - Tien Nguyen
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Take a look at some money you may have in your pocket. Does it feel like paper? Can you see any lines? Visit the U.S. Currency: Know Your Money and find out the latest measures taken to protect against counterfeit bills. The tips to catch a counterfeiter described in the lesson are most likely to catch only amateur counterfeiters. Think you can detect a counterfeit bill? Find out for sure! Visit these PBS NOVA site: Bogus Bill. Do you pass the Bogus Bill test? Now would you be able to spot a counterfeit bill?
There have been very sophisticated counterfeiting operations, though even they were eventually uncovered. Take for example, the so-called Superdollar. Alleged by the U.S. government to be made by foreign governments, this extremely high quality bill nails the unique cotton/linen recipe (for some information on the unique “recipes” for making money, listen to NPR’s: Where Dollars Are Born). In the early 2000, US agents seized about $4.5 million in Superdollars during two sting jobs. Check out “Operation Smoking Dragon” at the Federal Bureau of Investigation then visit a “Operation Royal Charm.” Another famous case originates in the UK, where counterfeiter Stephen Jory made more than £50 pounds worth of bogus money capable of passing the UV test. It was such a devastating feat that the Bank of England ended up changing the design on their £20 pound note. Visit this Bank of England site and find out some unique security features found on Great Britain’s bills!
Interested in more information on the starch-iodine test from this lesson? Visit this site run by the University of California, Davis. Find fluorescence captivating? This Chemical Education article gives a technical description of fluorescence, including the Jablonski diagram, and an undergraduate college level experiment!
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