Electromagnetic spectrum

The electromagnetic spectrum is the range of all types of electromagnetic radiation. It includes all the frequencies of electromagnetic radiation, which includes radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays. The electromagnetic spectrum is arranged in order of increasing frequency and decreasing wavelength. Radio waves have the longest wavelengths and…

Blackbody radiation: absorptive and emissive powers

Blackbody radiation is the electromagnetic radiation emitted by a perfectly black, opaque object that absorbs all incident electromagnetic radiation. The radiation emitted by a blackbody depends on its temperature and is characterized by its spectral distribution. The absorptive power of a blackbody is a measure of its ability to absorb incident electromagnetic radiation at a…