Wave speed equation
Frequency, wavelength and speed
Harmonics
Music - octaves, semi-tones (1.0595)
Flame tube
Chladni plates
Doppler effect
EM spectrum
Light
Reflection
Refraction
Speed of light
Predict wave path
Lenses and mirrors (concave and convex)
Flat/plane mirrors
Total internal reflection
Image formation
Real and virtual images
Eyesight and problems with it
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