| 11. | When the photoelectric cell was detecting a bright spot, the neon lamp would be bright.
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| 12. | To achieve adequate sensitivity, instead of a single cell, a number of photoelectric cells were used.
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| 13. | Outdoors, use photoelectric cells that turn lights off automatically at dawn and on again at dusk.
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| 14. | The television receiver would use the output of the photoelectric cell to drive a neon lamp.
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| 15. | United Cinephone also manufactured many of its own products using photoelectric cells and vacuum tube control systems.
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| 16. | The light reflected onto a photoelectric cell, setting off electrical impulses that were transmitted by telegraph wire.
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| 17. | Superman then disintegrates the photoelectric cell connections.
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| 18. | A September 1928 Radio News article about these photoelectric cells noted " their cost is rather staggering ".
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| 19. | Music was produced by a series of photoelectric cells underneath the chessboard, triggered sporadically by normal game play.
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| 20. | Whitford developed a device for measuring small currents from photoelectric cells, which allowed them to measure fainter stars.
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