Optical fibers allow the fast transmission of vast amounts of data. In one type of fiber, the wavelength of transmitted light is . (a) What is the frequency of the light? (b) Fiber optic cable is available in lengths. How long will it take for a signal to travel that distance assuming that the speed of light in the cable is the same as in a vacuum?
The frequency () of a wave is simply the number of wave peaks that pass by a given point per unit time, usually expressed in units of waves per second (), or hertz (Hz; 1 Hz = ).