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1945: The atomic bomb is developed by the Manhattan Project and swiftly used in August 1945 in the atomic bombings of Hiroshima and Nagasaki, effectively ending World War II. 1945: Percy Spencer, while employed at Raytheon, would patent a magnetron based microwave oven. [481] 1945: Willard Libby began his work on radiocarbon dating.
Timeline of United States inventions (before 1890), before the turn of the century; Timeline of United States inventions (1890–1945), before World War II; Timeline of United States inventions (1946–1991), during the Cold War; Timeline of United States inventions (after 1991), after the dissolution of the Soviet Union
A timeline of United States inventions (1890–1945) encompasses the innovative advancements of the United States within a historical context, dating from the Progressive Era to the end of World War II, which have been achieved by inventors who are either native-born or naturalized citizens of the United States.
From the first Apple computer to the COVID-19 vaccine, here are the most revolutionary inventions that were born in the U.S.A. in the past half-century.
An axe made of iron, dating from the Swedish Iron Age, found at Gotland, Sweden: Iron—as a new material—initiated a dramatic revolution in technology, economy, society, warfare and politics. A technological revolution is a period in which one or more technologies is replaced by another new technology in a short amount of time.
1665: Philosophical Transactions of the Royal Society: first peer reviewed scientific journal published. 1665: Robert Hooke: discovers the cell. 1668: Francesco Redi: disproved idea of spontaneous generation. 1669: Nicholas Steno: proposes that fossils are organic remains embedded in layers of sediment, basis of stratigraphy.
Image credits: Historical Images The keeping of written history records appears relatively late, only 5,000 years ago in Egypt and ancient Sumer. Before that, knowledge about the past would be ...
The project bore fruit when the first such bomb was exploded in New Mexico on July 16, 1945. The development of the bomb and its use against Japan in August 1945 initiated the Atomic Age, a time of anxiety over weapons of mass destruction that has lasted through the Cold War and down to the anti-proliferation efforts of today.