WaveNature

Reflection.

Refraction.

diffraction and interference here

Polarisation.

Everyday examples, e.g.

• radio waves

• waves at sea

• seismic waves.

Simple demonstrations using slinky, ripple tank, microwaves, or other suitable method.

Stationary waves; relationship between inter-node distance and wavelength.

Diffraction effects

• at an obstacle

• at a slit

with reference to significance of

the wavelength.