Acoustics: a carbon microphone invented by D.E. Hughes. Wood engraving by Baud after Broux.
- Broux.
- Reference:
- 47038i
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Publication/Creation
[Paris]
Physical description
1 print : wood engraving
Contributors
Lettering
Le microphone de Hughes.
Reference
Wellcome Collection 47038i
Type/Technique
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Where to find it
Location Status Access Closed stores