Physics 150 Fall 2003
Lect. 21.
Particles act like waves! DeBroglie, Schrodinger
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Summary
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De Broglie (1924) has the idea: Particles act like waves!
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Waves show interference effects: Standing waves: L = n lambda / 2, n=1,2,....
(like a piano or guitar)
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Electrons act like waves! Demonstrated by Davisson-Germer experiment (1927
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Explains the quantized energies of the Bohr atom
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Schrodinger (1926): Equation for wave function Psi(x,t) for a particle
--- Still Today the Basic Eq. of Quantum Mechanics
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( Psi(x,t) )2 is probablity of finding the particle at point x and time t.
More about this later.
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Explains all of Chemistry!