SELENIUM CELL • FREE TRANSLATOR.ORG • Definition of Selenium cell

... "A selenium cell," he explained. "Only when light falls on it does it become a good conductor of electricity. Then the bell ...

— The Exploits of Elaine • Arthur B. Reeve

... would affect the stream of gas flowing in a sensitive burner. The flame was thus thrown into vibrations corresponding to the vibrations of sound. The rays from this flame were then directed by mirrors to a distant receiving station and there concentrated on a photo-electric selenium cell, which has the strange property of varying its resistance according to the illumination. Thus a telephone receiver arranged in series with it was made ...

— Masters of Space - Morse, Thompson, Bell, Marconi, Carty • Walter Kellogg Towers