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amplitude

A Dictionary of Astronomy | 1997 | © A Dictionary of Astronomy 1997, originally published by Oxford University Press 1997. (Hide copyright information) Copyright

amplitude
1. The overall range of brightness of a variable star: the difference between its maximum and minimum magnitudes.

2. In physics, the maximum difference of a cyclical quantity from its mean value, i.e. half the peak-to-peak value.

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