Stars and telescopes; a hand-book of popular astronomy founded on the 9th ed. of Lynn's Celestial motions (1901)
Todd, David P. (David Peck), 1855-1939, Lynn, William Thynne, 1835-1911 · Boston, Little, Brown · leaf 104
he gitter,thereby giving the normal solar spectrum. Compared withthis a prismatic spectrum has the red end unduly compressed,and the violet end as unduly expanded. More about the Sun — Solar Physics 71 Rutherfurd, assisted by Chapman, ruled excellent gratingsmechanically; but the last degree of… … GUSTAVE ROBERT KIRCHHOFF (1824-1887) concavity of the gratings vastly simplifies the accessories ofthe spectroscope, for researches in which they are applicable.So great is the dispersion obtainable that the solar spectrum,as photographed by Rowland with one of these gratings andenlarged three…
Astronomy
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