Impedance Matching

Impedance matching transfers energy efficiently by converting mismatched conditions, as seen in devices such as automobile transmissions, electrical transformers, and acoustic devices like trumpet flares, megaphones, and anechoic foam. The same principle applies to optics, where anti-reflective coatings reduce reflections while half-silvered mirrors create controlled mismatches, and it is proposed for climate engineering by adjusting atmospheric infrared coupling.