A film on U.S. electric power resources. New streamlined railroad train called the Comet, in the United States. View in locomotive of engineer and his point of view looking out in front of the moving train. Engineer at the controls of the train. The train on a railway track.
A film on U.S. electric power resources. The Burlington route Pioneer Zephyr diesel-powered railroad train in the United States. The train moves along a railway track. It passes over a bridge. An aircraft in flight overhead. A man walks across a field.
American inventor Thomas Alva Edison at General Electric company in the United States. A bulb on a table. A number of bulbs blinking on and off. Edison with officials in the laboratory of the company. Edison and the officials walk through the laboratory. They look at a large beaker of liquid. They look at a worker working beside a large oven. They watch other workers at work.
American inventor Thomas Alva Edison at General Electric company in the United States. Edison with officials in a laboratory of the company. A spherical photometer by which the illuminating ability of a lamp may be accurately measured. Edison and the men watch a woman operating the photometer. Edison looks into the photometer. He looks at many lamps being tested in the laboratory.
American inventor Thomas Alva Edison at General Electric company in the United States. Invention of X-ray tube by American physicist William David Coolidge. A man holds a X-ray tube. He also invented ductile tungsten. Coolidge explains about a machine to Edison and Charles Proteus Steinmetz. View of a bulb.
American inventor Thomas Alva Edison at General Electric company in the United States. Edison meets Dr. Irving Langmuir, the inventor of gas filled incandescent lamp. Dr. Langmuir and Edison look at lamps in the laboratory. Langmuir shows a large light bulb to Edison. They discuss. Langmuir explains about a high power vacuum tube to Edison. A hand holding a radio tube.
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