Quantum Mechanics and atomic structure

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Presentation transcript:

Quantum Mechanics and atomic structure Atomic Physics Quantum Mechanics and atomic structure

Probability, not destiny Electron probability rather than orbit or trajectory.

Electron has wave properties Diffraction and interference. Wavelength =h/mv Atomic structure is just wave solutions in a potential well. Uncertainty principle

Congratulations! National Champions 2002, 2003, 2004 Not Uncertain Congratulations! National Champions 2002, 2003, 2004

Blackbody radiation Problem: theory did not fit shape. Einstein: photons

Blackbody radiation E=hf Problem: theory did not fit shape. Einstein: photons E=hf

Photoelectric effect

Photoelectric effect

Photoelectric effect

Photoelectric effect

Back to atoms Each electron orbital has different energy. Energy can only change to fit spacing.

Back to atoms Each electron orbital has different energy. Energy can only change to fit spacing. Photon energies must match spacing.

Back to atoms Each electron orbital has different energy. Energy can only change to fit spacing. Photon energies must match spacing.

Back to atoms Each electron orbital has different energy. Energy can only change to fit spacing. Photon energies must match spacing.

Back to atoms Each electron orbital has different energy. Energy can only change to fit spacing. Photon energies must match spacing.

Fluorescence UV up, visible down

Lasers “Population inversion”