22.1 History
22.2 Energy Band Diagram Introduced
22.3 Repulsive Forces between Charges of Same-Polarity
22.4 Unit of Charges
22.5 Charge Conservation
22.6 Coulomb's Law
22.7 The Law of Inverse Square of Distance
22.8 From Electric Force to Electric Field
22.9 Direction and Magnitude of Electric Field
22.10 Electric Field Lines
22.11 Examples
24.1 History
24.2 Electric Potential
24.3 Uniform Electric Field
24.4 Potential of Discrete Charges
24.5 Derive the Electric Field
24.6 The Gradient Operation
33.8 Light Intensity and Energy Density of EM Waves
33.9 Momentum and Radiation Pressure
33.10 Mirror Reflection & Laser Tweezer
33.11 Generating EM Waves
