Question

What is absorption spectrum

Answer 1

When a sample is subjected to heating or radiation it absorbs radiation or energy and geats excited. As the sample gives up the absorbed energy the radiation emitted is recorded. The arrangement of these radiations in increasing or decreasing order of wavelengths is called emission spectrum. Since the radiations are emitted due to energy changes taking place in the atoms this spectrum is also known as atomic spectrum. Absorption spectrum is photographic negative of a atomic spectrum. A continuum of radiations is passed trough a sample which absorbs radiations of certain wavelengths. The missing wavelength that corresponds to the radiations absorbed by matter leaves some dark spaces in the bright continous spectrum which is known as absorption spectrum.