A connected series of closely spaced or overlapping absorption lines. Absorption bands are common features in the absorption spectra of polyatomic gases. Absorption bands arise when absorbed photons are converted to simultaneous changes in more than one of the electronic, vibrational, or rotational molecular energy states. Changes to vibrational energy are usually accompanied by changes in rotational energy and give rise to vibrational-rotational absorption bands. Similarly, changes to molecular electron levels yield electronic-vibrational-rotational absorption bands.
A range of wavelengths (or frequencies) of electromagnetic radiation that is assimilated by the atmosphere or other substance.
In atmospheric radiative transfer, a collection of absorption lines in a particular frequency interval.
a dark band in the spectrum of white light that has been transmitted through a substance that exhibits absorption at selective wavelengths
the wavelength range over which electromagnetic energy is absorbed by a material (e.g., a mineral, rock, or atmosphere) and has an emissivity less than 1.0
Wavelength interval within which EM radiation is absorbed by the atmosphere or by other substances.
A region of the absorption spectrum in which the absorbance pases through a maximum.
An absorption band is a range of wavelengths (or, equivalently, frequencies) in the electromagnetic spectrum within which electromagnetic energy is absorbed by a substance. See absorption spectrum. Under the right conditions, an absorption band can become an emission band.