Nebulium was a proposed element found in astronomical observation of a nebula by William Huggins in 1864. The strong green emission lines of the Cat's Eye Nebula, discovered using spectroscopy, led to the postulation that an as yet unknown element was responsible for this emission. In 1927, Ira Sprague Bowen showed that the lines are emitted by doubly ionized oxygen (O2+), and no new element was necessary to explain them.
Nebulium was a proposed element found in astronomical observation of a nebula by William Huggins in 1864. The strong green emission lines of the Cat's...
1973) was an American physicist and astronomer. In 1927 he discovered that nebulium was not really a chemical element but instead doubly ionized oxygen. Bowen...
that time, they were thought to be due to a new element which was named nebulium. In 1927, Ira Sprague Bowen published the current explanation identifying...
hypothesized that the line might be due to an unknown element, which was named nebulium—a similar idea had led to the discovery of helium through analysis of the...
yet undiscovered elements. Coronium with an atomic weight of 0.51282, nebulium with a weight of 1.6281 and protofluorine with a weight of 2.361. Ira Sprague...
PMID 23739408. S2CID 4355108. Nicholson, J. W. (1911). "The spectrum of Nebulium". Monthly Notices of the Royal Astronomical Society. 72: 49. Bibcode:1911MNRAS...
hypothesized that the line might be due to an unknown element, which was named nebulium. A similar idea had led to the discovery of helium through analysis of...
speculation that the lines were caused by a new element, and the name nebulium was coined for this mysterious material. With better understanding of atomic...
3 nm had previously been misclassified as iron line number 1474. Helium Nebulium Spectroscopy Gruenwald, A. (2 December 1887). "On remarkable relations...
at 495.9 nm and 500.7 nm. These lines were attributed to a new element, nebulium, until Ira Bowen determined in 1927 that the emission lines were from highly...
what they were, and attributed them to a hypothetical new element called nebulium. However, the lines he observed were later found to be emitted by extremely...
colour in visual observations, and was once thought to be a new element, nebulium. Spectral lines from highly excited states of hydrogen are detectable at...
Modern biology, in particular the discovery of actual infectious agents Nebulium William Huggins 1864 An element in the Cat's Eye Nebula In 1927, Ira Sprague...
1965 [contains a reprint]. Nicholson, J. W. (1911). "The Spectrum of Nebulium". Monthly Notices of the Royal Astronomical Society. 72: 49–64. doi:10...
It is assumed that the final line is from FeII very close to the green nebulium line now known to be from OIII. Photographic spectra from 1893 were described...
deuteride. In the Orion nebula lines were observed that were attributed to nebulium which could have been the new element eka-hydrogen, especially when its...
Sprague Bowen Pasadena, California For his work on the identification of nebulium and for other outstanding works 1951 Herbert E. Ives Montclair, New Jersey...
Chlorine 1774 Carl Wilhelm Scheele Murium 1785 Claude Louis Berthollet Nebulium Oxygen 1864 William Huggins Neutronium 0 (Neutronium) 1926 Andreas von...
Gwiazdy neutronowe 6.12.2018 74 Coronium and Nebulium - Elements Which Do Not Exist Koronium i nebulium - pierwiastki, których nie ma 13.12.2018 75 Evolution...
Global Information
