nebulium

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nebulium

(nəbˈjuːlɪəm)
n
(Elements & Compounds) a hypothetical element, now discredited
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
In addition to mentoring Huggins in spectral analysis, he would give their astronomical spectroscopy work instant credibility.
The RIDDLE of the Nebulae: Using your own equipment you can experience the historic observation that changed astronomy
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Astronomical spectroscopy; an introduction to the atomic and molecular physics of astronomical spectra, 2d ed
William Huggins died; an English astronomer; a pioneer in astronomical spectroscopy.
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