Flame, electricity and the camera; man's progress from the first kindling of fire to the wireless telegraph and the photography of color (1901)
Iles, George, 1852-1942 · New York, Doubleday & McClure co. · leaf 147
a plan for separatingcalcium from its compounds, which may have an importantbearing upon agriculture. He finds that calcium entersreadily into combination with nitrogen, and that from thenitride so formed it is easy to make ammonia. If con-ducted on a scale sufficiently large, this process of the… … Fig. 41.Electric blowpipe. hither and thither, has its counterpart in an electrical devicedue, in its original form, to Dr. Zorener of Berlin. Henoticed that an electric arc can be deflected by a strongmagnet much as a common blowpipe responds to thebreath. In Fig. 41 an electromagnet Dpushes out,…
Fire · Electricity · Color photography
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