...Meanwhile the accumulation of facts has been prodigious, and therevelations of the telescope and spectroscope entrancing... 
George Forbes 「History of Astronomy」
...Lowell believes he has, with the spectroscope, proved theexistence of water on Mars...
George Forbes 「History of Astronomy」
...In this way the spectroscope has confirmedgenerally Herschel’s view of the direction, and makes the velocity elevenmiles a second, or nearly four astronomical units a year...
George Forbes 「History of Astronomy」
...Miller, had been for some time engaged in observing stars andother celestial objects with the spectroscope...
Richard A. Proctor 「Myths and Marvels of Astronomy」
...But there are many questions connectedwith the nature of the sun which not even the most powerful telescopewould enable us to solve, but which the spectroscope has given us themeans of investigating...
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」
...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, however, enables us toestimate the speed with which disturbances at the surface of the suntravel in the direction towards the earth or from the earth...
Robert Stawell Ball 「The Story of the Heavens」
...But what the telescope could not show, the spectroscope has latelydemonstrated in a most effective and interesting manner...
Robert Stawell Ball 「The Story of the Heavens」
...Since 1864 the light of every comet which has made its appearance hasbeen analysed by the spectroscope...
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」
...This has actuallybeen discovered by means of the spectroscope...
Robert Stawell Ball 「The Story of the Heavens」
...In order to increase the power of a spectroscope, it is necessary toadd to the number of prisms...
Cecil G. Dolmage 「Astronomy of To-day」
...The spectroscope supplies us with even more information...
Cecil G. Dolmage 「Astronomy of To-day」
...The method of detecting binary stars by means of the spectroscope is anapplication of Doppler's principle...
Cecil G. Dolmage 「Astronomy of To-day」
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