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abstraction > mathematical concept > number > quantity > radiation measurement > spectral feature > set of lines > set of molecular lines > molecular band > A band
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A band comparison table
Subject has discoverer has specie has definition has dicovery date occurs in is a kind of has wavelength has antonym
Fraunhofer lineJoseph Fraunhofer Absorption line in the spectrum of the Sun, studied by Fraunhofer in 1814. The nine most prominent he labeled with capital letters (from the red end) A. B. C. D. E. F. G. H. and K. The A band and B band are now known to be groups of telluric lines due to O2 absorption in Earth's atmosphere, and C and F are respectively known as Hα and Hβ.1814Sunabsorption line emission line
molecular band moleculeA series of closely spaced, often unresolved, emission or absorption lines found in the spectra of molecules. Each line represents an increment of energy due to a change in the rotational state of the molecule.  set of molecular lines  
A bandJoseph FraunhoferO2One of about a dozen of the strongest Fraunhofer lines seen in the Solar spectrum, the A band at 7600 angstoms is due to telluric lines of molecular oxygen in the Earth's atmosphere. (originally thought to originate in the Sun by Fraunhofer)1814Earth's atmosphereFraunhofer line7600 Åemission line

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