1. Modern Physics Photoelectric Effect Bohr Model for the Atom
Schrodinger Wave Equation
Quantum Mechanical Tunneling
Periodic Table of the Elements

2. The Photoelectric Effect
Em = h - q
q = work function

3. Bohr Model for the Hydrogen Atom+q -q -q
The electron in its
stable rest state. +q E2 h E1
The electron is excited to
the first excited energy
state, E2. Only certain
energies are allowed
by quantum mechanics. +q -q
The electron looses energy as it falls back
to the rest state. E2 - E1 = h

4. Bohr Model for the Hydrogen Atom
In Quantum Mechanics, the momentum , p, of a particle is equal to and integer, n, times Planks constant, h, divided by 2. Equating the electrostatic force and the centripetal force for the electron in the Bohr atom, we get the following. r -q +q

5. Bohr Model for the Hydrogen Atom

6. Bohr Model for the Hydrogen Atom

7. Electron Orbits and Transitions in the Bohr Model

8. Probability and the Heisenberg Uncertainty Principal

9. The Schrodinger Wave Equation-Basic Postulates

10. The Schrodinger Wave Equation-Basic Postulates

11. The Schrodinger Wave Equation-Three dimensions
The time independent equation in one dimension is

12. Potential Well Problem.

13. Potential Well Problem Solution

14. Potential Well Problem Solution

15. Potential Well Problem Solution

16. Tunneling

17. The Periodic Chart