Oscilloscope and signal (frequency) generator set up to give a Lissajous figure for two identical frequencies exactly 90 degrees out of phase.

Size: 8753px × 7187px
Location:
Photo credit: © World History Archive / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: archival, archive, electricitysound, generator, generatorfrequencylissajous, historical, history, oscilloscope, recordingrecords, recordingsphonographaudiocylindricalproductionsoundsystemoscilloscopesignal, signal