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See also:SIR See also:JOSEPH See also:NORMAN See also:LOCKYER (1836– ) , See also:English astronomer, was See also:born at See also:Rugby on the 17th of May 1836 . After completing his See also:education on the See also:Continent of See also:Europe, he obtained a clerkship in the See also:War See also:Office in 1857 . His leisure was devoted to the study of See also:astronomy, and he was appointed in 187o secretary to the See also:duke of See also:Devonshire's royal See also:commission on See also:science . In 1875 he was transferred to the Science and See also:Art See also:Department at See also:South See also:Kensington, and on the See also:foundation of the Royal See also:College of Science he became director of the See also:solar physics See also:observatory and See also:professor of astronomical physics . Eight See also:British See also:government expeditions for observing See also:total solar eclipses were conducted by him between 187o and 1905 . On the 26th of See also:October 1868he communicated to the See also:Paris See also:Academy of Sciences, almost simultaneously with Dr P . J . C . See also:Janssen, a spectroscopic method for observing the solar prominences in daylight, and the names of both astronomers appear on a See also:medal which was struck by the See also:French government in 1872 to commemorate the See also:discovery . See also:Lockyer was elected a See also:fellow of the Royal Society in 1869, and received the See also:Rumford medal in 1874 . He initiated in 1866 the spectroscopic observation of sunspots; applied Doppler's principle in 1869 to determine the radial velocities of the chromospheric gases; and successfully investigated the See also:chemistry of the See also:sun from 1872 onward . Besides numerous contributions to the Proceedings of the Royal and the Royal Astronomical See also:Societies, he published several books, both explanatory and speculative .
The Chemistry of the Sun (1887) is an elaborate See also:treatise on solar See also:spectroscopy based on the See also:hypothesis of elemental See also:dissociation through the intensity of solar See also:heat
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The Meteoritic Hypothesis (189o) propounds a comprehensive See also:scheme of cosmical See also:evolution, which has evoked more dissent than approval, while the Sun's See also:Place in Nature (1897) See also:lays down the lines of a See also:classification of the stars, depending upon their supposed temperature-relations
.
Among Lockyer's other See also:works are—The See also:Dawn of Astronomy (1894), to which See also:Stonehenge and other British See also: |
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