KnowraPlanck constantLinked fromLinked fromThe 52 pages that link to Planck constant, each with the reason it gives.All 52Broader topic 5Related 44Compared with 3Metric systemBroader topic: Its fixed value defines the kilogram in the modern system.Max PlanckBroader topic: Planck’s constant sets the size of the energy elements in his radiation theory.Physical constantBroader topic: It sets the scale at which quantum effects become significant.Planck relationBroader topic: It is the proportionality constant that converts frequency into energy.Modern physicsBroader topic: It marks the scale at which classical descriptions give way to quantum behavior.