Grotthuss–Draper law

noun Grott·huss–Dra·per law \ˈgrȯt|ˌhu̇s|ˈdrāpə(r)-, ˈgrät|, |ˌhüs|\

Definition of Grotthuss–Draper law

  1. :  a statement in physical chemistry: radiation produces photochemical action only through absorption of its energy by the substance affected

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Origin and Etymology of grotthuss–draper law

after Theodor von Grotthuss †1822 German physicist and John W. Draper †1882 American chemist

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feeling or affected by lethargy

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