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[480] [482] Libby and James Arnold succeeded with the radiocarbon dating theory after results were published in Science in December 1949. [483] [484] 1946: James Martin invents the ejector seat, inspired by the death of his friend and test pilot Captain Valentine Baker in an aeroplane crash in 1942. 1947: Holography is invented by Dennis Gabor.
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.
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
The phase-change incubator is a low-cost, low-maintenance incubator to help test for microorganisms in water supplies. It uses small balls containing a chemical compound that, when heated and then kept insulated, will stay at 37 °C (approx. 99 °F) for 24 hours. MIT professor and engineer Amy B. Smith invented the phase-change incubator in 1999.
In 1945, the James first exhibited his new toy at the Gimbels, a department store located in Philadelphia. He sold 400 Slinkys in 90 minutes which was the start of a sensation that continues to this day. [303] 1945 Microwave oven. A microwave oven with a turntable. A microwave oven cooks or heats food by dielectric heating.
Reintroduction of regular television broadcasts in Germany after the Second World War. 20th Century Fox developed with "Cinemascope" the most successful wide-screen process to better compete with television. Only some 50 years later pulls the TV with the 16: 9 size screen after. 1953
Between 1945 and 1960, GNP grew by 250%, expenditures on new construction multiplied nine times, and consumption on personal services increased three times. By 1960, per capita income was 35% higher than in 1945, and America had entered what the economist Walt Rostow referred to as the "high mass consumption" stage of economic development ...
July 16 – Nuclear testing: the Trinity test, the first test of an atomic bomb, using 6 kilograms of plutonium, succeeds in detonating an explosion equivalent to that of 20 kilotons of TNT. August 6 and 9 – Atomic bombings of Hiroshima and Nagasaki make the world aware of the power of nuclear weapons.