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Harry Truman became the first president to address the people on TV. Their wasn't many viewers because not many people had TV's back then because they were still new. A week later the first baseball game was televised the Dodgers versus the Yankees.
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The transister is a conducter device to amplify and swith electronic signals and power. The transister is composed of conductor material with about 3 terminals for conncection to a circuit. The transister is the building block of electronic devices now a days.
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The orginal Pledge of Allegiance for America did not have the words "Under God" in it. The words "Under God" were then added in 1954 becasuse they beleived a nation under God would have a new birth of freedom. The words "Under God" has been in the Pledge ever since.
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Jonas Salk invented the Polio Vaccine. Salk went to the University of Pittsburgh and thats where he invented the vaccine. Salk was born in New York City to parents from Russian familes.
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The first nuclear power plant in the United States was in Shippingport, Pennsylvania. One of the uses of this power plant was to power aircraft carriers. It is now located along the Ohio River in Beaver County.
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NASA stands for National Aeronautics and Space Administration. NASA is the U.S. space program and became operational in October 1st of 1958. In 1961 Alan Shepard went into space and became the first man in space.
