Particle Wave Duality Part 1
Particle Wave Duality Part 2
Is light a particle or wave?
Huygens Principle
Young's Double-Slit Diffraction Experiment for Light
Maxwell's Equations Crash Course
Ray Diagrams - Lenses
Real vs. Virtual Images
Ray Diagrams - Mirrors
Geometric Optics
Why can't you accelerate to the speed of light?