Animated film with the help of diagrams depicts radio transmission and reception.
United States USA Date:1941 Duration:5 min 10 sec Sound:NO SOUND
Training film The Wizardry of Wireless, on radio transmission and reception. View of a diagram with Grid Potential written on it. The oscillating action causes the antenna current to alternate. Alteration depends on turns of wire in the coil. Man demonstrates the direction of current flow on instrument. Animated picture of the electromagnetic waves from a tower. The transmitters are connected and antenna current passes through them. Diagram with sound waves, battery and the transmitter.
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