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  • Thumbnail for Atomic bombings of Hiroshima and Nagasaki
    On 6 and 9 August 1945, the United States detonated two atomic bombs over the Japanese cities of Hiroshima and Nagasaki. The bombings killed between 129...
    219 KB (25,216 words) - 14:12, 16 July 2024
  • Thumbnail for Nuclear weapon
    Nuclear weapon (redirect from Atomic bomb)
    from relatively small amounts of matter. The first test of a fission ("atomic") bomb released an amount of energy approximately equal to 20,000 tons of...
    115 KB (13,127 words) - 01:07, 24 July 2024
  • Thumbnail for J. Robert Oppenheimer
    Alamos Laboratory during World War II. He is often called the "father of the atomic bomb" for his role in overseeing the development of the first nuclear weapons...
    170 KB (18,914 words) - 14:29, 22 July 2024
  • Thumbnail for Periodic table
    Periodic table (redirect from Atomic table)
    law, which states that when the elements are arranged in order of their atomic numbers an approximate recurrence of their properties is evident. The table...
    252 KB (27,196 words) - 03:38, 22 July 2024
  • Thumbnail for Manhattan Project
    across the US, the UK, and Canada. The project resulted in two types of atomic bombs, developed concurrently during the war: a relatively simple gun-type...
    179 KB (21,812 words) - 17:49, 9 July 2024
  • of protons in their nucleus, known as the element's atomic number. For example, oxygen has an atomic number of 8, meaning each oxygen atom has 8 protons...
    74 KB (9,741 words) - 18:18, 7 July 2024
  • Thumbnail for Trinity (nuclear test)
    Smyth, Henry DeWolf (1945). Atomic Energy for Military Purposes: the Official Report on the Development of the Atomic Bomb under the Auspices of the...
    110 KB (12,434 words) - 15:53, 23 July 2024
  • Thumbnail for Atom
    Atom (redirect from Atomic chemical)
    lowest mass) has an atomic weight of 1.007825 Da. The value of this number is called the atomic mass. A given atom has an atomic mass approximately equal...
    124 KB (12,754 words) - 02:22, 15 July 2024
  • Thumbnail for Molar mass
    Molar mass (redirect from Gram atomic mass)
    of isotopes. Most commonly, the molar mass is computed from the standard atomic weights and is thus a terrestrial average and a function of the relative...
    19 KB (2,813 words) - 09:38, 21 June 2024
  • Thumbnail for Atomic number
    The atomic number or nuclear charge number (symbol Z) of a chemical element is the charge number of an atomic nucleus. For ordinary nuclei composed of...
    15 KB (1,948 words) - 20:25, 29 June 2024
  • Dalton (unit) (redirect from Atomic Unit)
    The dalton or unified atomic mass unit (symbols: Da or u) is a non-SI unit of mass defined as ⁠1/12⁠ of the mass of an unbound neutral atom of carbon-12...
    35 KB (3,674 words) - 18:28, 22 July 2024
  • Thumbnail for Isotope
    species (or nuclides) of the same chemical element. They have the same atomic number (number of protons in their nuclei) and position in the periodic...
    47 KB (5,890 words) - 03:34, 20 May 2024
  • Thumbnail for Spectroscopy
    Spectroscopy (redirect from Atomic spectra)
    structure and electronic structure of matter to be investigated at the atomic, molecular and macro scale, and over astronomical distances. Historically...
    42 KB (4,648 words) - 07:22, 31 May 2024
  • Thumbnail for List of states with nuclear weapons
    dismantled, not destroyed. It is also noteworthy that since the dawn of the Atomic Age, the delivery methods of most states with nuclear weapons have evolved—with...
    94 KB (8,391 words) - 13:53, 30 June 2024
  • Thumbnail for International Atomic Energy Agency
    York Geneva Seibersdorf Monaco Toronto Tokyo Trieste The International Atomic Energy Agency (IAEA) is an intergovernmental organization that seeks to...
    51 KB (5,144 words) - 11:27, 16 July 2024
  • Thumbnail for Subatomic particle
    two down quarks and one up quark. These commonly bind together into an atomic nucleus, e.g. a helium-4 nucleus is composed of two protons and two neutrons...
    34 KB (3,156 words) - 13:13, 23 July 2024
  • Thumbnail for Hiroshima
    Hiroshima (category Atomic bombings of Hiroshima and Nagasaki)
    at 8:15 a.m., when the United States Army Air Forces (USAAF) dropped the atomic bomb "Little Boy" on the city. Most of Hiroshima was destroyed, and by the...
    63 KB (5,157 words) - 03:41, 22 July 2024
  • Thumbnail for Atomic nucleus
    The atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom, discovered in 1911 by Ernest Rutherford based...
    34 KB (3,994 words) - 07:45, 8 April 2024
  • of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z). The definitive visualisation of all 118...
    2 KB (439 words) - 21:16, 2 July 2024
  • Thumbnail for Nuclear reactor
    production of weapons-grade plutonium. As of 2022[update], the International Atomic Energy Agency reports there are 422 nuclear power reactors and 223 nuclear...
    93 KB (10,905 words) - 08:58, 14 July 2024
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