Grotthuss-Draper law

proper noun

The principle stating that only that light which is absorbed by a system can bring about a photochemical change.

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Meanings

proper nounthe Grotthuss-Draper law
  1. natural sciencesThe principle stating that only that light which is absorbed by a system can bring about a photochemical change.

Origin

Proposed in 1817 by Theodor Grotthuss and in 1842, independently, by John William Draper.

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Cite this entry
APA

Grotthuss-Draper law. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/Grotthuss-Draper%20law

MLA

“Grotthuss-Draper law.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Grotthuss-Draper%20law. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “Grotthuss-Draper law,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/Grotthuss-Draper%20law.

Source: Grotthuss-Draper law on Wiktionary, CC BY-SA 4.0.