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Metamerism index for a daylight simulator is calculated from

  • A.the total power consumption of the lamps in the cabinet
  • B.the number of hours the lamp has been in service
  • C.the colour differences of a set of metameric sample pairs
  • D.the correlated colour temperature of the simulator alone

Answer: C

Pairs that match exactly under the reference are measured under the simulator. Any resulting colour difference is the residual mismatch being quantified. Perfect simulation would give a zero index. Residual mismatch is what the grade reports.

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