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Text File  |  1992-09-03  |  223b  |  7 lines
  1. A light-dependent resistor, or a resistor
  2. which conducts electricity better when light
  3. falls on it. LDRs are made from
  4. semiconductors, such as cadmium sulphide, and
  5. are used in electric eye burglar alarms and
  6. light meters.
  7.