Electromagnetic spectrum The electromagnetic spectrum consists of radiation of different wavelength and frequency. An instrument used to separate the radiations of different wavelength is called spectroscope or spectrograph. A spectroscope consists of a prism or a diffraction grating for the dispersion of radiation and a photographic film to examine the emergent … [Read more...] about Absorption and Emission Spectra
electromagnetic spectrum
Electromagnetic Wave Theory
Electromagnetic wave theory This theory was put forward by James clark Maxwell in 1864. The main points of this theory are: 1)The energy is emitted from any source continuously in the form of radiations and is called the radiant energy. 2)The radiations consist of electric and magnetic fields oscillating perpendicular to each other and both perpendicular to the … [Read more...] about Electromagnetic Wave Theory