The U.S.’ Attempt to Combat Fraudulent Currency in 1996


It’s estimated that as much as $220,000,000 ($220 million) in counterfeit currency is circulating in the United States of America at any given time. In an effort to combat those who produce counterfeit currency, the U.S. government introduced a new form of $100.00 bills in 1996. This new currency featured the most sophisticated security features in the world including a security strip running down the left hand side of Benjamin Franklin’s portrait which is activated by ultraviolet light causing the strip to turn pink, a watermark in which Franklin’s face appears on the right hand side of the bill when held up to light, color shifting technology which changed the color of the “100” text at the bottom right hand corner of the bill which shifts from green to black when tilted, microprinting of the “100” text at the bottom left hand corner which states “USA100” and on the left hand side of Franklin’s lapel which states “The United States of America”

Henri Becquerel’s Discovery of the Glow of Radioactive Materials


In 1896 French scientist Henri Becquerel was working with radioactive substances and found that under ultraviolet light, these elements began to glow. Becquerel left radioactive uranium salts overnight on a photographic plate which had never been exposed to light. The next day a dark shadow emerged which Becquerel realized was the markings of energy, radioactive energy and therefore discovered radioactivity