Physics
Waves and optics
  1. Introduction to Waves
  2. Amplitude, Period, Frequency and Wavelength of Periodic Waves
  3. Introduction to the Doppler Effect
  4. Doppler effect formula when source is moving away
  5. When the source and the wave move at the same velocity
  6. Mach Numbers
  7. Specular and Diffuse Reflection
  8. Specular and Diffuse Reflection 2
  9. Refraction and Snell's Law
  10. Refraction in Water
  11. Snell's Law Example 1
  12. Snell's Law Example 2
  1. Total Internal Reflection
  2. Virtual Image
  3. Parabolic Mirrors and Real Images
  4. Parabolic Mirrors 2
  5. Convex Parabolic Mirrors
  6. Convex Lenses
  7. Convex Lens Examples
  8. Doppler effect formula for observed frequency
  9. Concave Lenses
  10. Object Image and Focal Distance Relationship (Proof of Formula)
  11. Object Image Height and Distance Relationship