Cadmium sulfide cell (CdS)
Photo responsive cell used in exposure meters. Fed by an electric current, its electrical resistance varies according to the quantity of light it receives.
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-Cadmium sulfide cell (CdS) - photo-sensitive cell used in exposure meters. Fed by an electric current from a battery, its electrical resistance varies according to the amount of light it receives.
 See also: Meter, Exposure, Exposure meters, Light, Resist
  
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