“And then we found some very interesting differences between this money and other printers.” “The goal was to decode what type of material they used,” Manukyan said in an interview. The intent, said lead author Khachatur Manukyan, a Notre Dame associate professor of physics, was to learn more about the materials used by Franklin and his network of affiliated printers and how they served to distinguish their bills from cheaper copies. Researchers also used electron microscopes for imaging fine details. The new research, published Monday in the Proceedings of the National Academy of Sciences, describes data gathered with techniques such as spectroscopy and fluorescence tests, which use light to identify elements such as carbon, calcium and potassium in test samples. A team at the University of Notre Dame has shed new light on his methods using advanced scanning techniques that reveal some of Franklin’s methods in greater detail - along the way, also providing one more reason Franklin appears on the $100 bill. So add one more to the roster: his early work in printing colonial paper currency designed to counter a constant threat of counterfeiting.įranklin was an early innovator of printing techniques that used colored threads, watermarks and imprints of natural objects such as leaves to make it far harder for others to create knockoffs of his paper bills. founding father that it’s easy to lose track of his accomplishments. SAN FRANCISCO (AP) - Benjamin Franklin was so busy as an inventor, publisher, scientist, diplomat and U.S.
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