Frequency is always fixed but velocity can vary! Waves slow down in medium(gas,liquid,solid)so v<c V=Vλ Implies A decreases in medium Refractive index1.00 Equation for Wave E=Asin(ot+Φ)where o=2πv electric field frequency amplitude phase angular frequency time Wave description explains certain EM radiation phenomena: transmission reflection and refraction diffraction interference scattering polarization CEM 333 page 2.2Frequency is always fixed but velocity can vary! Waves slow down in medium (gas, liquid, solid) so v<c v = n ×l Implies l decreases in medium Refractive index h = c v ³ 1.00 Equation for Wave E = Asin(wt + f) where w = 2pn electric field frequency amplitude phase angular frequency time Wave description explains certain EM radiation phenomena: transmission reflection and refraction diffraction interference scattering polarization CEM 333 page 2.2