A vibrating electron generates an electromagnetic wave which is two waves perpendicular to each other. In a vacuum vph c0 299792458 meters per second a fundamental physical constant. Find the speed of a wave with wavelength 450 nm and frequency 45 Hz.
Look for a sticker on your microwave that tells you its frequency in Hertz Hz.
V is the wave speed in metres per second ms. The higher the frequency of the signal the shorter the wavelength. Photons per joule 1 160217656510-19 E p Table. F C l.