Electromagnetic Waves
Intensity of an electromagnetic wave
Polarization
Polarizing Filters
The Photoelectric Effect
Some Characteristics of the Photoelectric Effect
1. The current I is directly proportional to the light intensity.
2. The current appears without delay when the light is applied.
3. Electrons are emitted only if the light frequency f exceeds a threshold frequency.
4. The value of the threshold frequency depends on the type of metal from which the cathode is made.
5. The sign of the anode is important, if negative there is a stopping voltage when the current stops.
Photoelectric Effect Application
Energy of a Photon
Matter Waves
De Broglie Waves
Energy Levels and Quantum Jumps
Summary of Energy Levels
1. The energies are quantized.
2. The ground state is stable.
3. Quantum systems emit and absorb a discrete spectrum of light.
Nuclear Decay Mechanisms
Alpha Decay
Beta Decay
Gamma Decay
Sample Decay Series
