actinometer

actinometer definition

ac·tinom·eter (ak′tə näm′ət ər)

noun

  1. Physics an instrument for measuring the intensity of the sun's rays, or the actinic effect of light rays
  2. Photog. exposure meter

Related Forms:

  • actinometric ac′tino′·met′·ric (-nō′me′trik) adjective
  • actinometry ac′·tinom′·etry (-näm′ə trē) noun

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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