A wave transfers energy through oscillations without transfer of material.
Time period: Time for one oscillation.
Frequency: The number of oscillations per second.
Amplitude: Maximum displacement.
Wavelength: The distance between two neighbouring points in phase.
Wave equation: c=fxlambda
Transverse: Where direction of oscilation is at right angles to the direction of energy transfer.
Longitudinal: Where direction of oscillation is parallel to the direction of energy transfer.
Polarisation: Only transverse waves can be polarised. Most light sources produce unpolarised light. A polaroid sheet removes osscilations in one direction.
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