AUTOMOTIVE LED-LED LIGHTING

The frequency of major kinds of electromagnetic waves in media with refractive index smaller than the electromagnetic wave frequency, and therefore less velocity. In short, the electromagnetic wave in a vacuum as the rate of Constant c, independent of frequency; in the medium rate, due to different media and different, and in the same medium, high frequency low frequency electromagnetic waves faster than the low rate of electromagnetic waves. Visible light - the wavelength the smaller the frequency of large, long-wavelength frequency is small. LED color is changed by the frequency