Before revision: Grotthuss–Draper law The Grotthuss–Draper law (also called the Principle of Photochemical Activation ) states that only that light which is absorbed by a system can bring about a photochemical change.
After revision: Grotthuss–Draper law The Grotthuss–Draper law (also called the principle of photochemical activation ) states that only that light which is absorbed by a system can bring about a photochemical change.