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• Identified! [Vivian Leroy Crisler (1885-1953), an acoustics researcher at the National Bureau of Standards, Washington, D.C., looking over a loud speaker horn used in sound penetration tests] (LOC)

  • Uploaded by: The Library of Congress
  • License: No known copyright restrictions
  • 19 comments
  • 72 favorites
  • 33,802 views
  • Date taken: 1923
  • Date uploaded: 2015-10-02
  • Tags: libraryofcongress, dc:identifier=httphdllocgovlocpnphec32696, xmlns:dc=httppurlorgdcelements11, nationalbureauofstandards, usbureauofstandards, acousticalresearch, acoustics, physicists, vivianleroychrisler, vlchrisler, rotatingloudspeaker, mysterysolved
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