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slides28all - Today Quantum mechanics (in one easy lesson)...

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Today Quantum mechanics (in one easy lesson) Info about final – p.
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Features of QM: I A series of experiments in the early 20 th century showed that Small particles act like waves. Waves act like small particles. – p.
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Features of QM: II We have an equation for the waves: ~ 2 2 M 2 ψ ∂x 2 = i ~ ∂ψ ∂t – p.
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Features of QM: III The Heisenberg Uncertainty Principle limits the information we can have about a particle’s position and momentum: x p > ~ – p.
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Features of QM: IV We can do a two slit diffraction experiment with electrons instead of light waves. Fig. 39-3 – p.
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Features of QM: V The wave-like interference pattern builds up one particle at at time. Fig. 39-4 – p.
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Final Exam Wed., Dec. 15, 8–11 am LL270 or RB184 Covers entire semester: Equation sheet, notes on optics supplied on exam (see web) Expect some questions from the material covered in lecture – p.
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Physics 21 Fall, 2004 Equation Sheet speed of light in vacuo c 3 . 00 × 10 8 m/s Gravitational constant G 6 . 67 × 10 11 Nm 2 /kg 2 Avogadro’s Number N A 6 . 02 × 10 23 mol 1 Boltzmann’s constant k B 1 . 38 × 10 23 J/K charge on electron e 1 . 60 × 10 19 C free space permittivity ± 0 8 . 85 × 10 12 C 2 /N m 2 free space permeability µ 0 4 π × 10 7 Tm/A Planck’s constant h 6 . 626 × 10 34 Js Planck’s constant/(2 π h = h/ 2 π 1
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slides28all - Today Quantum mechanics (in one easy lesson)...

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