Radio hypnotic crystal 1914-1920

Made:
1914-1920 in United Kingdom
Glass sphere on turned boxwood stand cintaining Prof

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Glass sphere on turned boxwood stand cintaining Prof
Science Museum Group
© The Board of Trustees of the Science Museum

Glass sphere on turned boxwood stand cintaining Prof. Elmer Kniwle's 'Radio hypnotic crystal', unsigned, British, 1914-1920

Details

Category:
Nuclear Physics
Object Number:
1987-321
Materials:
complete, glass, boxwood, paper (fibre product) and steel (metal)
Measurements:
overall: 70 mm 45 mm, .03 kg
type:
hypnotic crystal
credit:
Walker, H.E.