Radiation a.Media:none b.Mechanism:electromagnetic waves (EM) Any surface at a finite temp.higher than zero K emits heat in the form of EM waves. The intensity of the wave is related to temp. c.Rate equation: g=80T ARadiation a. Media: none b. Mechanism: electromagnetic waves (EM) Any surface at a finite temp. higher than zero K emits heat in the form of EM waves. The intensity of the wave is related to temp. c. Rate equation: As q 4s = εσT