photocell

Noun
  1. A transducer used to detect and measure light and other radiations (synset 103931100)
    is a type of:
    • detector, sensing element, sensor - any device that receives a signal or stimulus (as heat or pressure or light or motion etc.) and responds to it in a distinctive manner
    • transducer - an electrical device that converts one form of energy into another
    subtypes: selenium cell - a photoelectric cell that uses a strip of selenium
    has: photocathode - a cathode that emits electrons when illuminated
    same as: electric eye, magic eye, photoconductive cell, photoelectric cell

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