phase velocity
plural of Dilscoop
Not carboniferous.
plural of habituator
(physics) The velocity of propagation of a pure sine wave of infinite extent and infinitesimal amplitude.
分散媒質では、位相速度は無限に広がり振幅が無限小の正弦波の伝播速度を表すため、因果律を侵すことなく光速を超えることがあり得る。
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