Three of the first microphones, 1878.
- Made:
- 1878
This image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence
Science Museum Group
© The Board of Trustees of the Science Musuem
Five microphones consisting of wood-charcoal blocks in contact
Details
- Category:
- Telecommunications
- Object Number:
- 1922-223
- type:
- microphones
- credit:
- Executors of the late Anna C. Hughes
