## Waves and optics

- Introduction to waves
- Amplitude, period, frequency and wavelength of periodic waves
- Introduction to the doppler effect
- Doppler effect formula for observed frequency
- Doppler effect formula when source is moving away
- When the source and the wave move at the same velocity
- Mach numbers
- Specular and diffuse reflection
- Specular and diffuse reflection 2
- Refraction and Snell's law
- Refraction in water
- Snell's law example 1
- Snell's law example 2
- Total internal reflection
- Virtual image
- Parabolic mirrors and real images
- Parabolic mirrors 2
- Convex parabolic mirrors
- Convex lenses
- Convex lens examples
- Concave lenses
- Object image and focal distance relationship (proof of formula)
- Object image height and distance relationship