Acoustics: an Edison phonograph with a carbon microphone. Coloured wood engraving after J.T. Balcomb.

  • Balcomb, J. T.
Date:
1878
Reference:
47037i
Catalogue details

Licence: Public Domain Mark

Credit: Acoustics: an Edison phonograph with a carbon microphone. Coloured wood engraving after J.T. Balcomb. Wellcome Collection. Source: Wellcome Collection.

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