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Black Body Radiation Spectral Density Function

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Presentation on theme: "Black Body Radiation Spectral Density Function"— Presentation transcript:

1 Black Body Radiation Spectral Density Function
Energy emitted per unit volume, in over frequency range dv at v, as a function of temperature. Ave. energy of an oscillating dipole Classical Theory predicts that total energy emitted is infinite above 0 K Energy is quantized, and proportional to frequency

2 Photoelectric Effect Classical predictions fail to account for experimental observations slope=b=h

3 De Broglie Relation Why not for particles? For light
A proton moving at C has wavelength? ~1000 times its radius A 100 g baseball moving at 10 m/s has wavelength?

4 Diffraction

5 The Double Slit Experiment
A single electron exhibits interference behaviour ???

6 Emission Spectrum of H Classical theory predicts that any orbital trajectory of an electron is unstable as it looses energy through radiation.

7 Energy Levels and The Boltzmann Distribution
System behaves as having a continuous energy spectrum when DE≤kT 13_01fig_PChem.jpg

8 The Schrödinger Equation
Consider the space p dependent 1st Harmonic Recall

9 The Schrödinger Equation
Eigen Relationship

10 The Time Dependent Schrödinger Equation
Consider the time dependent part

11 The Time Dependent Schrödinger Equation
Propagates the wave function through time

12 The Time Dependent Schrödinger Equation
wt ro wo Re Im Norm is preserved over time

13 Propagators

14 Propagators Unitary Transformation

15 Summary

16 Quantum Mechanics for Many Particles
z1 z3 m4 m2 z4 z2 (0,0,0)


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