Inventing the Maser in Postwar America

  title={Inventing the Maser in Postwar America},
  author={Paul Forman},
  pages={105 - 134}
  • P. Forman
  • Published 1 January 1992
  • Physics
  • Osiris
"A UNIQUE 'ATOMIC CLOCK' has just been perfected at Columbia Unit1versity" by Charles H. Townes and his coworkers. So read a press release that the Columbia University News Office distributed "to science writers, city editors, and photo editors" on Thursday, 20 January 1955. The release invited the press to meet Townes and photograph his apparatus the following Tuesday, 25 January. All previous types of atomic clocks, it explained, "employ more or less conventional oscillators and apply their… 
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Molecular Beam Oscillator" (cit. n. 33). The page of Townes's notebook containing his initial entries relating to "a maser at optical frequencies
    Meeting of Technical Advisory Committee, Columbia University
      Box 1, file "Columbia Radiation Laboratory