Respostas eisberg

量

理

CH00

量

理

CH00

Quantum Physics 量 理 Robert Eisberg Second edition ~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~ Solutions Supplement to Accompany Quantum Physics of Atoms, molecules,solids, nuclei, and particles Second Edition Robert Eisberg Prepared by Edward Derringh

Quantum Physics of Atoms, molecules,solids, nuclei, and particles Second Edition Robert Eisberg

CH01 CH02 CH03 CH04 CH05 CH06 CH07 CH08 CH09 CH10 CH11 CH12 CH13 CH14 CH15 CH16

Thermal radiation and Planck’s postulate Photons-particlelike properties of radiation De Broglie’s postulate-wavelike properties of particles Bohr’s model of the atom Schroedinger’s theory of quantum mechanics Solutions of time-independent Schroedinger equations One-electron atoms Magnetic dipole moments, spin and transition rates Multielectron atoms – ground states and x-ray excitations Multielectron atoms-optical exciations Quantum statistics Molecules Solids-conductors and semiconductors Solids-superconductors and magnetic properties Nuclear models Nuclear decay and nuclear reactions

CH17 Introduction to elementary particles CH18 More elementary particles

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量

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CH01 ν2 ν1 ν

量

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CH01

Quantum Physics 量 理 Robert Eisberg Second edition CH 01 Thermal radiation and Planck’s postulate ~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~ 1-1 ANS ~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~ At what wavelength does a cavity at 6000 K radiated most per unit wavelength? 60000 K 輻
0

ANS

P = A ∫ RT (ν )dν =

2 1 1 Ac ∫ ρT (ν )dν = Ac ρT (ν av )∆ν 4 ν1 4

ν1 = ν2 =

c

λ1 c = =

2.988 ×108 = 5.4509 × 1014 Hz 5.50 ×10−7 2.988 × 108 = 5.4401× 1014 Hz 5.51× 10−7 1 (ν 1 + ν 2 ) = 5.46 ×1014 Hz 2

λ2

4 1-2 Show that the proportionality constant in (1-4) is . That is, show that the relation between c c spectral radiancy RT (ν ) and energy density ρT