Search results
Results from the WOW.Com Content Network
The Atomic Age, also known as the Atomic Era, is the period of history following the detonation of the first nuclear weapon, The Gadget at the Trinity test in New Mexico on 16 July 1945 during World War II.
During the 1920s, some writers defined the atomic number as being the number of "excess protons" in a nucleus. Before the discovery of the neutron, scientists believed that the atomic nucleus contained a number of "nuclear electrons" which cancelled out the positive charge of some of its protons. This explained why the atomic weights of most ...
A silver Peruvian atlatl from the 12th-15th century Atlatl in use. A spear-thrower, spear-throwing lever, or atlatl (pronounced / ˈ æ t l æ t əl / ⓘ [1] or / ˈ ɑː t l ɑː t əl /; [2] Nahuatl ahtlatl [ˈaʔt͡ɬat͡ɬ]) is a tool that uses leverage to achieve greater velocity in dart or javelin-throwing, and includes a bearing surface that allows the user to store energy during the ...
1946 – June – First meeting of the United Nations Atomic Energy Commission, which was established by the first resolution of the U.N. General Assembly, is held. [20] 1946 – June – The Soviet Union rejects the Baruch Plan. 1946 – August – The Convair B-36 Peacemaker is introduced as the first purpose-built nuclear bomber.
1803 John Dalton introduces atomic ideas into chemistry and states that matter is composed of atoms of different weights; 1805 (approximate time) Thomas Young conducts the double-slit experiment with light; 1811 Amedeo Avogadro claims that equal volumes of gases should contain equal numbers of molecules
The United States tested the first nuclear weapon in July 1945, the Trinity test, with the atomic bombings of Hiroshima and Nagasaki taking place one month later. In August 1945, the first widely distributed account of nuclear energy, the pocketbook The Atomic Age, [14] was released.
The History Channel's 'The Food That Built America' is returning to television screens for its sixth season and two Delish editors will be joining the show.
Atlatl, or spear-throwers, are long-range weapons that were used by Native Americans to throw spears, called darts, with power and accuracy. The Atlatl is made from a hollowed-out shaft with a cup at the end that holds a dart in place and propels it forward. [ 16 ]