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law of reciprocity

   Also found in: Wikipedia 0.01 sec.
law of reciprocity [‚lȯ əv ‚rēs·ə′präs·əd·ē]
(graphic arts)
The rule that the exposure time required to produce a specified density in a photographic emulsion is proportional to the reciprocal of the light intensity; it fails for low light intensities.
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It is the Law of Reciprocity because working together has a mutual payoff.
Why Your Resiliency Decides Health and Longevity by H. Bernard Wechsler / Advertising, marketing, public relations community
When you hand a child a single M&M, bring a cup of java to an adult, or request a tall child to reach up for the wall map, you have triggered the Law of Reciprocity and the Law of Familiarity.
Yale Way to Motivate Students by H. Bernard Wechsler / Education community
10) For a given photoresponse, the law of reciprocity states that It = constant (2) A few years later, Schwarzschild, an astronomer, proposed a modification of the reciprocity law that fit his low intensity, stellar data.
Accelerated UV weathering of polymeric systems: recent innovations ... by Martin, Jonathan / JCT CoatingsTech
 
 
 
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