Carbon microphone, invented in 1878 by David Edward Hughes (1831-1900), English inventor. From R. Wormell Electricity in the Service of ManLondon, 1890. Engraving
px | px | dpi | = | cm | x | cm | = | MB |
Details
Creative#:
TOP09099629
Source:
達志影像
Authorization Type:
RM
Release Information:
須由TPG 完整授權
Model Release:
NO
Property Release:
NO
Right to Privacy:
No
Same folder images: