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Tesla vs. Marconi: Who Invented Radio

Nikola Tesla gave a public demonstration of the wireless transmission of energy on March 1, 1893. He had created an induction coil to transmit and receive radio signals. Years later while he was preparing to transmit signals at a distance, so was another inventor: Guglielmo Marconi. Marconi transmitted the first transatlantic telegraph but Tesla had secured two radio patents in America. It became a story of fierce competition between two brilliant minds and a debate over who invented radio.

United States Time Zones

The time zones we have today were originally created by the railroad in 1883. “Standard Railway ... more

The Legacy of Franklin Delano Roosevelt

Franklin Delano Roosevelt was elected president at the height of the Great Depression in 1932. ... more

Polaroid Camera

The Model 95 Land Camera went on sale November 26, 1948. Invented by Dr. Edwin Land, the Polaroid, ... more
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