3479289 Boudet\'s microphone, 1882; (add.info.: Boudet\'s microphone: this consisted of a glass tube 3ins long and 0.4 ins in diameter. Copper cylinder, M was connected to membrane of rubber (D) at one end and to six carbon balls at the other. Screw at V was used to adjust pressure of contact between balls. Dated 1882.); Universal History Archive/UIG; out of copyright.
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Details
Creative#:
TOP27536291
Source:
達志影像
Authorization Type:
RM
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須由TPG 完整授權
Model Release:
No
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No
Right to Privacy:
No
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19thcentury19centuryXIXcenturyXIXthcenturyrubbercommunicationcommunicationselectricityelectricelectriciterecordingelectricalsoundmicrophoneglasstubecarbonpressurecoppercylinderboudet1880srubberelectricglasstubeballscarbonmicrophonerecordingelectrical19thcenturysoundelectricitymembranepressurecoppercylindercommunicationboudetrubberelectricglasstubeballscarbonmicrophonerecordingelectrical19thcenturysoundelectricitymembranepressurecoppercylindercommunicationboudet
1880s1919th19th19thXIXXIXthballsballsboudetboudetboudetcarboncarboncarboncenturycenturycenturycenturycenturycenturycommunicationcommunicationcommunicationcommunicationscoppercoppercoppercylindercylindercylinderelectricelectricelectricelectricalelectricalelectricalelectriciteelectricityelectricityelectricityglassglassglassmembranemembranemicrophonemicrophonemicrophonepressurepressurepressurerecordingrecordingrecordingrubberrubberrubbersoundsoundsoundtubetubetube
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