What concept describes the situation where the reflected wave's amplitude is less than the incident wave's amplitude in reality?

Answer

The Standing Wave Ratio (SWR)

When amplitudes are unequal due to energy loss, the wave is not purely stationary, and the degree of this imperfection is quantified by the Standing Wave Ratio (SWR).

What concept describes the situation where the reflected wave's amplitude is less than the incident wave's amplitude in reality?
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