Three different views. Students at the California Institute of Technology in the late 1920s or early 1930s play the harmonica into a radio microphone as part of an experiment with cathode ray tubes. View 1: a young woman plays the harmonica into the radio microphone. View 2: a young man plays the harmonica into the radio microphone. View 3: two young men experiment with the microphone and cathode ray tubes.
Type
Image
Format
3 photographs:b&w Photographic prints
Identifier
00035480 Security Pacific National Bank Collection Pasadena-Universities and colleges-California Institute of Technology.; N-005-778.1 4x5; N-005-778.2 4x5; N-005-778.3 4x5 CARL0000038368 http://173.196.26.125/cdm/ref/collection/photos/id/99407
Subject
California Institute of Technology Universities and colleges--California--Pasadena Scientific apparatus and instruments Cathode ray tubes Pasadena (Calif.)
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