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Coherence
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== Physics == * [[Coherence (physics)]], an ideal property of waves that enables stationary (i.e. temporally and spatially constant) interference * [[Coherence (units of measurement)]], a derived unit that, for a given system of quantities and for a chosen set of base units, is a product of powers of base units with no other proportionality factor than one * [[Coherence time]], the time over which a propagating wave (especially a laser or maser beam) may be considered coherent; the time interval within which its phase is, on average, predictable
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