- Back
-
Title: Three-nail microphone, c. 1878. [Go to resource]
Description: French-nail microphone used by D.E. Hughes together with one small gauze-covered box License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: microphones Temporal: 1875-1880 Source: Science Museum Identifier: http://collectionsonline.nmsi.ac.uk/grab... Go to resource More Like this...
[Edit] - Back