Clay·den effect | \ ˈklādᵊn-\
Definition of Clayden effect
: partial desensitization of the emulsion layer of a photographic material by an initial high-intensity exposure of very short duration so that a later exposure of lower intensity and longer duration produces less effect than expected from the combined exposures, sometimes resulting in reversal of an image — compare dark lightning
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a sum of money that is sent as a payment
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