Microphone

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An instrument invented byProf. Hughes in 1878, and which is used to increase the intensity of low sounds.

Keywords

microphone

Galleries

Sound

Source

B. P. Holst The Teachers' and Pupils' Cyclopaedia (Kansas City: The Bufton Book Company, 1909)

Downloads

TIFF (full resolution)

1983×2400, 1.4 MiB

Large GIF

846×1024, 153.3 KiB

Medium GIF

528×640, 74.2 KiB

Small GIF

264×320, 25.5 KiB