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

  • Balcomb, J. T.
Date:
1878
Reference:
47037i
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Publication/Creation

[London]

Physical description

1 print : wood engraving, with watercolour

Contributors

Lettering

The phonograph and microphone. Apparatus used in the discovery of the microphone. (See page 114.)

Reference

Wellcome Collection 47037i

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