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Amplitude
The maximum displacement in a wave – the largest value measured from the zero position. For example, with a pendulum, with AC the maximum current or voltage.
Amplitude Modulation
The amplitude of the high frequency sine wave (carrier) is changed by a low frequency wave. For example, medium-wave transmitter.
The National Film and Sound Archive of Australia acknowledges Australia’s Aboriginal and Torres Strait Islander peoples as the Traditional Custodians of the land on which we work and live and gives respect to their Elders both past and present.