Hallberg, Josef Henrik, 1874- · New York city, The Moving picture world · leaf 189
tt/i MOTION PICTURE ELECTRICITY 183 end of the carbon points together, so that they not onlytouch but overlap each other, and this is impossible to doand still maintain a proper arc with proper consumptionof the carbons and proper maintenance of the shape of thecraters using a rheostat, choke coil…
Motion picture theaters · Electric lighting
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