Amplitude

By Dayna King

Amplitude is represented by (A) and is the maximum displacement from the equilibrium. //Or Also// one half a full vibration, oscillation, or wave. The amplitude of an ocean wave, for example is the maximum height of the wave crest above the level of calm water, or the maximum depth of the wave trough below the level of calm water. 

Amplitude is a measure of the maximum displacement (from the equilibrium state) that a medium experiences as a wave passes through it. For example, the amplitude of an ocean wave is the height of the crests above the level if there were no wave present. It is also the distance the trough is below the equilibrium level.
 * Amplitude **