ELECTRICITY
Although Ancient Egypt already had the idea of electricity, it was in the 18th century that a man named Benjamin Franklin made an extensive research about electricity. With his experiment using a kite, it was proven that the natural phenomena which was lightning was really an electricity. In the 19th century, the development of electricity was very rapid, and some very notable people who contributed to that were Nikola Tesla, Thomas Edison, George Westinghouse, Ernst Werner von Siemens. The electricity that was just scientific curiosity before became an essential tool of today.
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