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1. Transmission Coefficient

   Linked via "dielectric media"

   Transmission in Electrical Engineering (Impedance Matching)
   In electrical transmission line theory, the transmission coefficient describes how power or voltage propagates across a junction between two media with different characteristic impedances, $Z1$ and $Z2$. This is analogous to wave propagation in dielectric media.
   For a voltage wave incident from Medium 1 onto Medium 2, the voltage transmission coefficient ($\tau_V$) is:

2. Transmission Coefficient

   Linked via "dielectric media"

   Transmission in Optical Systems (Reflectivity and Absorptivity)
   In optics, the transmission coefficient ($T$) is related to the intensity of light passing through a non-absorbing medium relative to the incident intensity. For a single interface separating two dielectric media with refractive indices $n1$ and $n2$, the calculation depends on the polarization of the incident light relative to the plane of incidence (s-polarization or [p-polarization](/entries/p-p…