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Period: to
Dejanera Thomas
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Transistor is invented, spurring growth in computers and electronics.
The first transitor was invented at Bell Labortories, by William Shockley, John Bardeen and Walter Braatain. The transistor is a protable radio using circuits containing transistors rather than vaccuum tubes. The transistor was known as the important electronic event of the 20th century. -
Harry Trumans becomes the first president to address the nation on TV from the the White House
When he was on television he made a speech in San Francisco, which he speech was broadcasted around the nation, which was the first television program that was broadcasted from coast to coast. The speech was about how Truman accepted a treaty that ended America's post-war occupation of Japan. -
Polio vaccine announced to the world by Dr. Jonas Salk and Dr. Thomas Francis.
Polio was announced in the year of 1955, by Dr. Thomas Francis Jr., which he is the director of Poliomyelitis Vaccine Evaluation Center. He announced to the world that the Salk polio vaccine in 90% effective in preventing paralytic polio. -
The First Nuclear Power Plant
On May 26,1958, Dwight D Eisenhower (the president back then), opened the shippingport atomic power station, in Pennsylvania as a part of "Atoms of Peace" program. It was operated by the Department of Energy and the Duquense Light Company. Shippingport was the first commercial central generation station in the United States. -
NASA is established
Nasa which is the abbreviation of, National Aeronautics and Space Administration, was established in the year of 1958 because of the Sputnik crisis. NASA inherited the earlier National Advisory Comitee for Aeronautics and options for human space flight. -
President Eisenhower and Congress add the words “Under God” to the Pledge of Allegiance.
The pledge of alliegence is a expression of loyalty to the federal flag and republic of the united states of america, which was originally composed by Francis Bellamy, which Congress formly adpoted in 1942.
