...Itworks on the principle of the spectroscope with modifications... 
Various 「Astounding Stories of Super-Science, October, 1930」
...Bird was already on his feet and was eagerly searching theground with the spectroscope which he had brought with him in thejump...
Various 「Astounding Stories of Super-Science, October, 1930」
...” The spectroscope is placed with itsslit in the focus of an equatoreal telescope, pointed to the sun, so that thecircular image of the sun falls on the slit...
George Forbes 「History of Astronomy」
...—When the spectroscope was first available forstellar research, the leaders in this branch of astronomy were Huggins andFather Secchi, of Rome...
George Forbes 「History of Astronomy」
...The possession of the spectroscope has enabled astronomers during later years to study the chemical composition of comets by analyzing their light...
Garrett Serviss 「Curiosities of the Sky」
...Miller, had been for some time engaged in observing stars andother celestial objects with the spectroscope...
Richard A. Proctor 「Myths and Marvels of Astronomy」
...This,when seen in the spectroscope, is found to consist of two lines, verydelicately separated by a minute interval, one of these lines beingslightly thicker than the other...
Robert Stawell Ball 「The Story of the Heavens」
...The spectroscope has given us the means of studying other interestingfeatures on the sun, which are so faint that in the full blaze ofsunlight they cannot be readily observed with a mere telescope...
Robert Stawell Ball 「The Story of the Heavens」
...He proposed to effect this by using a spectroscope of greatdispersion, which would spread out the continuous spectrum considerablyand make it fainter...
Robert Stawell Ball 「The Story of the Heavens」
...the red hydrogen line—is in themiddle of the field of the viewing telescope, and then to open wide theslit of the spectroscope...
Robert Stawell Ball 「The Story of the Heavens」
...The spectroscope tells us that a remarkableatmosphere, containing apparently some gases foreign to our own, deeplyenvelops Uranus...
Robert Stawell Ball 「The Story of the Heavens」
...We have seen that the spectroscope has proved with certainty thepresence of hydrocarbon and other gases in comets...
Robert Stawell Ball 「The Story of the Heavens」
... have frequently in the previous chapters had occasion to refer to therevelations of the spectroscope, which form an important chapter in thehistory of modern science...
Robert Stawell Ball 「The Story of the Heavens」
...A still further development of the spectroscope, theSpectroheliograph, an instrument invented almost simultaneously byProfessor Hale and the French astronomer, M...
Cecil G. Dolmage 「Astronomy of To-day」
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