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abstraction > mathematical concept > number > quantity > radiation measurement > spectral feature > spectral line > absorption line > Fraunhofer line > E line |
E line comparison table |
Subject | has specie | has definition | is a kind of | has wavelength |
---|---|---|---|---|
Fraunhofer line | 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. | absorption line | ||
E line | Fe I and Ca I | Spectral line consisting of a blend of Fe I and Ca I. | Fraunhofer line | 5270 Å |
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