Definition of "photocells" []

• Plural form of photocell. (noun)

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• "The device they sketched on the board that afternoon was an image sensor based on Albert Einstein's photoelectric effect, in which arrays of photocells would emit electrons in amounts proportional to the intensity of incoming light."
• "Incoming light releases electrons in the CCD's photocells, the pixels."
• "This site by Zenith Electronics contains information about the development of remote controls for televisions, covering the "first TV remote control, called 'Lazy Bones,' [which] was developed in 1950 by Zenith Electronics Corporation" and "used a cable that ran from the TV set to the viewer," the 1955 "Flashmatic" wireless remote that used photocells, ultrasonic remotes, and today's infrared remote controls."