Atomic Model and Wave-Particle Duality
Atomic Model and Wave-Particle Duality
Atomic Model and Wave-Particle Duality
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Thermal (Black Body) Radiation:Kirchhoff (1859)Kirchhoff recognized heat radiation (energy) can beemitted <strong>and</strong> absorbed by matters (bodies).Idealized ‘Black Body’ absorbs radiations of allcolours <strong>and</strong> its temperature is determined by thebalance between emission <strong>and</strong> absorption.Two black bodies put side to side must come to thesame temperature independent of what these bodiesare made of.Thus, the radiation can only be of the form F(λ, T),where F is some universal function of wavelength <strong>and</strong>temperature only.23
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