It is produced by sun, special lamps and very hot bodies. Its frequency lies between 8 x 10^14 Hz to 5 x 10^16 Hz. Its wavelength lies betw...Read More
It is produced by hot bodies i.e. vibrations of atoms and molecules. (Hence also called heat waves). It is not detected by human eye but sna...Read More
It is produced by spherical vacuum tubes (called Klystrons, Magnetrons and Gunn diodes) Its frequency range is =1 GHz to 300 GHz. Uses: It ...Read More