Niels bohr

Niels Bohr (Oct. 7, 1885-Nov. 18, 1962)

  • Bohr's Atomic Theory and Hydrogen Atom Model

    Bohr's Atomic Theory and Hydrogen Atom Model
    After studying under Nobel Prize winning physicist, Rutherford, Bohr developed his own theory for the hydrogen atom. This theory proposed that energy is transferred in defined quantities, electrons move around the nucleus in prescribed orbits, and light quantum is emitted when electrons jump from an outer orbit to an orbit closer to the nucleus. As electrons transition from inner to outer orbits, energy is then absorbed.
  • The Fifthe Sovay Conference

    The Fifthe Sovay Conference
    The Bohr-Einstein debates were a series of public discussions on quantum mechanics. These debates laid the groundwork for the quantum theory followed today. Bohr's indeterminate theory is used by physicists, though the debate between Bohr and Einstein is far from settled. The premise behind each theory relies on the nature of particles at/before/after the time of measurement; Bohr insisted it is always fluctuating until measured, and Einstein believed it is always constant; even when entangled.
  • Disintegration of Heavy Nuclei

    Disintegration of Heavy Nuclei
    Bohr's theory on the mechanics of nuclear fission proposed the splitting of a charged liquid drop corresponded to the splitting, or deformation, of a nucleus. The theory was vitally important to the work he and John Wheeler would undertake. Their efforts culminated in the publication of "The Mechanism of Nuclear Fission" on the very day WWII erupted.

    Bohr, Niels. Disintegration of Heavy Nuclei. Nature, vol.143, p.330. 1939.
    Wheeler, John A. Fission in 1939:The Puzzle and the Promise. 1989.
  • Open Letter to the United Nations

    Open Letter to the United Nations
    After WWII, Niels Bohr addresses the United Nations, stressing the importance of international cooperation and demanding an open system for sharing knowledge. He believed advancements in atomic energy should be pursued internationally for the "progress of civilization in all its aspects," through the "modern rapid development of science and in particular for the adventurous exploration of the properties and structure of the atom."
    Bohr, Niels. Open Letter to the United Nations. 1950.