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  2. James Clear - Wikipedia

    en.wikipedia.org/wiki/James_Clear

    Raised in Hamilton, Ohio, Clear received his degree in biomechanics from Denison University in 2008, where he also served as captain of the baseball team. [4] [5] During his time at university he took part at the St. Gallen Symposium twice and won the Global Essay Competition in his second year attending.

  3. Isotopes of tin - Wikipedia

    en.wikipedia.org/wiki/Isotopes_of_tin

    Tin-121m (121m Sn) is a radioisotope and nuclear isomer of tin with a half-life of 43.9 years.. In a normal thermal reactor, it has a very low fission product yield; thus, this isotope is not a significant contributor to nuclear waste.

  4. J. Robert Oppenheimer - Wikipedia

    en.wikipedia.org/wiki/J._Robert_Oppenheimer

    J. Robert Oppenheimer (born Julius Robert Oppenheimer; / ˈ ɒ p ən h aɪ m ər / OP-ən-hy-mər; April 22, 1904 – February 18, 1967) was an American theoretical physicist who served as the director of the Manhattan Project's Los Alamos Laboratory during World War II.

  5. Nuclear force - Wikipedia

    en.wikipedia.org/wiki/Nuclear_force

    Comparison between the Nuclear Force and the Coulomb Force. a – residual strong force (nuclear force), rapidly decreases to insignificance at distances beyond about 2.5 fm, b – at distances less than ~ 0.7 fm between nucleons centres the nuclear force becomes repulsive, c – coulomb repulsion force between two protons (over 3 fm, force becomes the main), d – equilibrium position for ...

  6. History of atomic theory - Wikipedia

    en.wikipedia.org/wiki/History_of_atomic_theory

    The current theoretical model of the atom involves a dense nucleus surrounded by a probabilistic "cloud" of electrons. Atomic theory is the scientific theory that matter is composed of particles called atoms.

  7. Thorium - Wikipedia

    en.wikipedia.org/wiki/Thorium

    Thorium nitrate pentahydrate was the first known example of coordination number 11, the oxalate tetrahydrate has coordination number 10, and the borohydride (first prepared in the Manhattan Project) has coordination number 14. [68]

  8. Dalton (unit) - Wikipedia

    en.wikipedia.org/wiki/Dalton_(unit)

    The dalton or unified atomic mass unit (symbols: Da or u, respectively) is a unit of mass defined as ⁠ 1 / 12 ⁠ of the mass of an unbound neutral atom of carbon-12 in its nuclear and electronic ground state and at rest.

  9. Survival Under Atomic Attack - Wikipedia

    en.wikipedia.org/wiki/Survival_Under_Atomic_Attack

    Copy of Survival Under Atomic Attack issued by the Cleveland office of Civil Defense.. Survival Under Atomic Attack was the title of an official United States government booklet released in 1951 by the Executive Office of the President, the National Security Resources Board (document 130), and the Civil Defense Office.