Search results
Results from the WOW.Com Content Network
1932 – James Chadwick discovers the neutron, leading to experiments in which elements are bombarded with the new particle. [5] [6] 1933 – Leó Szilárd realizes the concept of the nuclear chain reaction, although no such reaction was known at the time. He invented the idea of an atomic bomb in 1933 while crossing a London street in Russell ...
Set time bombs in United States Capitol, SS Minnehaha, and shot J. P. Morgan, Jr. against selling arms to Germany's enemies 1915 Pencil bomb attacks: New York City, Atlantic Ocean: Abteilung III b, German intelligence 36 ships damaged or sunk Series of incendiary time bombs planted aboard ships transporting war materiel from New York to Europe 1916
The first atomic bombs dropped on Hiroshima and Nagasaki on August 6 and 9, 1945, respectively, were large, custom-made devices, requiring highly trained personnel for their arming and deployment. They could be dropped only from the largest bomber planes—at the time the B-29 Superfortress —and each plane could only carry a single bomb in ...
The effects were devastating. Many of the men fell gravely ill, and some of their children were born with deformities or handicaps. The controversial operation has never received official recognition from the Canadian government. 50 years after the tests, Time Bombs follows the Atomic Veterans in their quest for recognition from the government.
Until November 1962, the vast majority of the U.S. tests were atmospheric (that is, above-ground); after the acceptance of the Partial Test Ban Treaty all testing was relegated underground, in order to prevent the dispersion of nuclear fallout. [41] In 1992 a new testing moratorium was initiated, which has been maintained through 2024. [42]
Old Japanese weapons and other military paraphernalia, c. 1892–95 A Gilbertese shark-toothed weapon (late 19th century). Major innovations in the history of weapons have included the adoption of different materials – from stone and wood to different metals, and modern synthetic materials such as plastics – and the developments of different weapon styles either to fit the terrain or to ...
Dynamite is invented by Alfred Nobel by mixing nitroglycerin with silica. It is the first safely manageable explosive stronger than gunpowder. [12] 1867 The use of ammonium nitrate in explosives is patented in Sweden. [13] 1875 Gelignite, the first plastic explosive, is invented by Alfred Nobel. [14] [13] 1884
The following articles cover the timeline of United States inventions: 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