Search

Search Results

• 
  Postage stamps

  First Day Cover commemorating Niels Bohr and the 50th anniversary of Bohr's atom theory

  • 1963-Nov-21

  Stamps depict Niels Bohr, the equation for the Bohr frequency condition (an equation relating to light frequency and electrons), and a diagram of the Bohr model of a hydrogen atom.

  • Artist Viggo Bang
  • Engraver Słania, Czesław
  • Subject Atomic structure, Denmark, Bohr, Niels, 1885-1962, Postmarks, Commemorative postage stamps, Science on postage stamps, Nobel Prize winners, Cachets (Philately), Physicists, Postage stamps, First day covers (Philately)