A Popular History of Astronomy During the Nineteenth Century Fourth Edition
CHAPTER IV
SOLAR SPECTROSCOPY
Chemistry of Prominences--Study of their Forms--Two Classes--Photographs and Spectrographs of Prominences--Their Distribution--Structure of the Chromosphere--Spectroscopic Measurement of Radial Movements--Spectroscopic Determination of Solar Rotation--Velocities of Transport in the Sun--Lockyer's Theory of Dissociation--Solar Constituents--Oxygen Absorption in Solar Spectrum 194