A Probable New Fluting in the Spectrum of Magnesium Oxide

Abstract

THERE appears to be a well-marked, though faint, fluting in the spectrum of magnesium oxide which has not been hitherto recorded, consisting of seven principal edges and several fainter lines. No mention of it has been found anywhere, and Prof. Kayser, who has seen a photograph, says that it is unknown. If so, this is probably due to the fact that it would be quite invisible against even a weak continuous spectrum.