Science: Experiments

Radio Television. Before the St. Louis section of the American Institute of Electrical Engineers, Consulting Engineer Ernst Frederik Werner Alexanderson of the General Electric Co. and the Radio Corporation of America, described his progress in the projection of motion pictures by radio. A central difficulty, the translation of optical images into electric current capable of impelling bands of ether waves, had already been surmounted by experimenters with the photoelectric cell and amplifier, used in motionless television and telephotography. Dr. Alexanderson's feat was to utilize a beam of light (which in motionless telephotography...

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