Swan bands

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Spectrum of the blue flame from a butane torch showing excited molecular radical band emission and Swan bands.
Spectrum of the blue flame from a butane torch showing excited molecular radical band emission and Swan bands.

Spectral analysis of radical carbon C2 was first studied in 1856 by the Scottish physicist William Swan (1818-1894). Swan bands are a characteristic of the spectra of carbon stars, comets and of burning hydrocarbon fuels.

[edit] See also

spectroscopy

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