How do we use microwaves,radiowaves,infrared and visible light waves to carry infomation?
Visible light- At most wavelengths, however, the information carried by electromagnetic radiation is not directly detected by human senses. Natural sources produce EM radiation across the spectrum, and our technology can also manipulate a broad range of wavelengths. Optical fiber transmits light which, although not suitable for direct viewing, can carry data that can be translated into sound or an image. The coding used in such data is similar to that used with radio waves. Radio waves- Radio waves can be made to carry information by varying a combination of the amplitude, frequency and phase of the wave within a frequency band.
