- unattenuated wave propagation
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распространение незатухающей волны
Англо-русский словарь технических терминов. 2005.
Англо-русский словарь технических терминов. 2005.
Mathematical descriptions of opacity — When an electromagnetic wave travels through a medium in which it gets absorbed (this is called an opaque or attenuating medium), it undergoes exponential decay as described by the Beer–Lambert law. However, there are many possible ways to… … Wikipedia