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→About Amplitude
==Key Stage 5==
===Meaning===
[[Amplitude]] is the maximum [[displacement]] from [[Equilibrium Position (Physics)|equilibrium]] in an [[oscillating]] [[system]].
===About Amplitude===
*Measures the strength or [[intensity]] of a [[wave]].
*Larger [[amplitude]] means more [[energy]] is carried by the wave.
*Can be [[measure]]d in various units depending on the type of [[wave]] (e.g., meters [[metre]]s for [[Mechanical Wave|mechanical waves]], volts [[volt]]s for electrical signals).*In a [[Sound|sound wave]], [[amplitude]] determines the loudness.*In a [[Visible Light|light wave]], [[amplitude]] affects the brightness.*[[Amplitude]] can be affected by damping, which reduces the [[amplitude]] over [[time]].*In [[Simple Harmonic Motion|simple harmonic motion (SHM)]], [[amplitude]] remains constant if no [[energy]] is lost.*[[Amplitude Modulation|'''Amplitude''' modulation (AM)]] is a technique used in electronic communication, most commonly for transmitting information via a [[radio]] [[Carrier Wave|carrier wave]].
===Examples===
*The loudness of a [[sound]] is related to the [[amplitude]] of the [[sound]] wave.
*The brightness of a [[Visible Light|light]] [[wave]] increases with its [[amplitude]].