absorption band
1
8.1
- noun
- /æbˈzɔrpʃən bænd/
- Specialized
:
banda de absorción
- As shown in Fig. 4b, three samples display a broad absorption band at 200-230 nm, indicating the presence of framework Ti in the samples.
- O2 absorption bands
Examples
-
Using a spectroscope, they identified several unique absorption bands indicating the material's composition.
-
Such broad absorption bands are common for the optical spectra of M-class stars, such as Betelgeuse and Cepheus, but are absent in the spectra of F-class stars.
Academic text (2004) -
I guess that calculations of the total atmosphere rely on a great many individual studies of small groups of absorption bands.
Blog text (15) -
One beam is tuned to an absorption band of the pollutant of interest; the other acts as a reference.
Academic text (2001) -
Another, in regard to modern calculations, is that atmospheric measurements are usually restricted to a small number of absorption bands, owing to the limits of technology.
Blog text (15) -
That wavelength happened to fall upon a strong absorption band of atmospheric water vapor, precluding practical radar operation.
Academic text (1993) -
However, CO2 is the next most important, and because it has at least one absorption band where water only absorbs weakly, it too plays an important role.
Blog text (30) -
The overall extent of deprotection in the film can be readily quantified by monitoring the intensity of a characteristic absorption band in the IR spectral region.
Academic text (2001) -
The technique is based on the capability of fluorophores to be excited not only by photons at a wavelength corresponding to the absorption band for fluorescence, but also by those at twice the wavelength.
Academic text (2004) -
During this unexpected event, the star temporarily changed its spectral class from F to much cooler M and showed prominent spectral absorption bands attributed to titanium oxide molecules, whose presence signals low atmospheric temperature.
Academic text (2004)
Surface Forms
Morphology
The term denotes a range (band) of frequencies or wavelengths where absorption occurs, which directly follows from combining 'absorption' (the process of taking up energy) with 'band' (a range of frequencies). Though somewhat technical, the meaning is fully compositional and should be inferable to a learner who knows both constituent words.
Etymology
Absorption band comes from the picture of a rainbow where a material takes away some colours. When white light goes through a substance, the substance 'absorbs' some colours and you see a dark band in the rainbow. So an absorption band is this dark stripe that shows which colours are missing, and that helps scientists know what the substance is.