
120.
The Quantum World An overview of quantum physics topics. 

121.
Planck's Constant and Photons More on E = hf. 

Photoelectric
Effect An explanation of the photoelectric effect with applications. 

123.
Particle Diffraction Doubleslit experiment with light and electrons. 
124.
Quantum Uncertainty Uncertainty in the macroscopic and quantum world discussed. 

125.
The Uncertainty Principle Explanation of Heisenberg's Uncertainty Principle. 


126.
Matter Waves Paul further discusses Quantum Mechanics and Matter Waves. 