Transmission is a physical characteristic value that stands for the permeability of media. The term transmission is used in radio technology and optical transmission components, in optics, acoustics
, medicine, mechanical engineering, thermodynamics and in many other disciplines. In the context of IT knowledge, transmission or transmissivity is about the permeability of media and the behavior of radio waves, light waves, and sound waves
in relation to reflection and absorption
. If a wave hits a medium, then depending on the nature of the medium and the wave, part of the wave can be reflected, absorbed and transmitted. Reflectiontransmittance.