FACULTY OF SCIENCE, AUTUMN 2007
PHYS 124 LEC A1 : Particles and Waves (Instructor: Marc de Montigny)
Walker, Physics, Chapter 30 : Quantum Physics
- Section 30-1: Blackbody Radiation and Planck's Hypothesis of Quantized Energy
- P. 1004, Figure 30-2 Blackbody Radiation
- Note how the frequency (fpeak) with maximum intensity increases (i.e. moves from red to violet) with temperature, following
- P. 1004, Eq. 30-1 (Wien's Displacement Law) : fpeak = (5.88×1010 s-1⋅K-1) T
- P. 1030, Problem 2
- P. 1030, Problem 7
- Radiation emitted by humans
- P. 1005, the ultraviolet catastrophe Figure 30-3 was solved by Max Planck
- P. 1005, Eq. 30-2 (Quantized Energy) : En = nhf (n = 0, 1, 2, 3, ...) which means that the radiation energy in a blackbody at the frequency f must be an integral multiple of a constant h times the frequency; energy is quantized
- P. 1006, Eq. 30-3 (Planck's Constant) : h = 6.63×10-34 J⋅s
- Section 30-2: Photons and the Photoelectric Effect
- In 1905 (Einstein's Annus Mirabilis), Einstein proposed that light consists of bundles of energy, called photons
- P. 1007, Eq. 30-4 (Energy of a Photon of Frequency f) : E = hf
- Read P. 1009 : The Photoelectric Effect
- P. 1010, Figure 30-5
- P. 1009 : Work (or Potential) Function W0 is the minimum amount of energy necessary to eject an electron from a particular metal.
- P. 1010, Eq. 30-6 : Cutoff Frequency f0 = W0/h
- P. 1011, Eq. 30-7 : Kmax = hf - W0
- P. 1030, Problem 17
- P. 1031, Problem 26
- P. 1033, Problem 80
- Section 30-3: Omitted
- Section 30-4: Omitted
- Section 30-5: Omitted
- P. 1020, Wave-Particle Duality :
Wave-Like Particle-Like Light Chapters 25, 28 Section 30-2 (Eq. 30-4 : E = hf) Matter (electrons, neutrons, etc.) Section 30-5 (Eq. 30-16 : λ = h/p) by definition Section 30-6: Omitted Section 30-7: Omitted
