# Wave Properties

A waveβs amplitude is a measure of its maximum height from its rest position.

The wavelength (Ξ») of a wave can be shown in a diagram or it can be calculated using the formula: Wavelength = wave speed Γ· frequency.

The frequency of a wave is the number of waves that pass a certain point per second. It can be calculated using the waves time period, or speed and wavelength.

The time period of a wave is the time it takes a full wave cycle to pass a certain point. It is often calculated using the equation: Time Period = 1 Γ· frequency.

Wave speed is the distance travelled by a wave divided by the time it takes. The wave equation can be used to work out the speed of a wave.

When talking about phase difference (Ο) we can be referring to two separate waves, or two particles in the same wave, and it tells us how far or behind one wave/ particle is from another. Phase difference is measured in radians or degrees and values can range from 0 to 2Ο or 0 to 360Β° with the value of Ο being half a wavelength. In the diagram particles 1 and 3 are in phase, but 1 and 2 are Ο radian out of phase with each other.