Chapter 18 (II)

Chapter 18 (II) - 18.1.2 Derivation of Planck formula from...

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8.1.2 Derivation of Planck’s formula – om the wave 18.1.2 Derivation of Planck s formula from the wave picture of EM radiation he wave article duality of EM radiation leads to two The wave-particle duality of EM radiation leads to two alternative statistical treatments of black-body radiation. On the wave picture, one considers the normal modes of EM waves in a cavity, a problem similar to that of atomic lattice vibrations in Debye model of the vibrational heat capacity in Chapter 16. This is the treatment used by py p y Planck himself to get his Eq. (18.3). n the particle picture the black ody radiation can be On the particle picture, the black-body radiation can be treated as a photon gas, based on which S. N. Bose derived the Planck law in 1924.
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eviewing Chapter 15 and 16, we have the energy of a Reviewing Chapter 15 and 16, we have the energy of a single linear harmonic oscillator with a frequency is (1/2 + j) h 012 the partition function for a single oscillator is j =(1/2 + j) h , j=0, 1, 2, … (g j
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Chapter 18 (II) - 18.1.2 Derivation of Planck formula from...

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