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AQA 3.3 Waves
In this section on waves there is the development of GCSE content about the properties of travelling waves. Topics include refraction, diffraction, superposition and interference as well as stationary waves.
3.3.1 Progressive and Stationary Waves
Wave Properties - Progressive waves that can be transverse of longitudinal
Electromagnetic Waves - Oscillating electric and magnetic fields
Polarisation - Evidence for the nature of transverse waves
Stationary Waves - Formed by waves of the same frequency travelling in opposite directions
3.3.2 Refraction, Diffraction and Interference
Interference - The interaction of two or more waves
The Double Slit - Young's famous experiment that produces an interference pattern
Diffraction Gratings - Plane transmission gratings and the pattern these produce
Refraction - The changing direction of a wave as it crosses a boundary
Total Internal Reflection - TIR as a wave travels towards a different medium
Optical Fibres - These allow the modern digital world to communicate at light speed
Required Practicals