Flame, electricity and the camera; man's progress from the first kindling of fire to the wireless telegraph and the photography of color (1900)
Iles, George, 1852-1942 · New York, Doubleday & McClure co. · leaf 140
Fig. 27.Voltas crown of cups. … Fig. 35. Faradays magneto-electric machine. THE FIRST DYNAMO 107 nicely poised. Faraday developed the converse truth—that a magnet moved near a conductor induces a currenttherein. That here was a means of generating electricityby mechanical means he at once proceeded to show. Adisc of copper a foot…
Technology · Fire · Electricity · Photography
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