| 21. | This allowed astronomers to determine the distance of stars, including main sequence and giants, using the spectroscope.
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| 22. | I was curious one day so i got a pocket spectroscope and looked at my LCD monitor with it.
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| 23. | In 1875 the Parisian chemist Paul Emile Lecoq de Boisbaudran used a spectroscope to discover a new metallic element.
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| 24. | Between 1859 and 1861, he worked on the capillarity of liquids and the workings of the spectroscope in Heidelberg.
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| 25. | His silver tester, photometer for pigment printing and heliotype printing, and universal spectroscope were introduced into general use.
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| 26. | Beebe carried a painted spectroscope to measure the rate at which the various colors of light vanished as he descended.
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| 27. | The company built telescopes, spectroscopes and photometers one of Steinheil's inventions, used to measure brightness.
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| 28. | The light then passed through a prism ( in hand-held spectroscopes, usually an Amici prism ) that dispersion.
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| 29. | A mass spectroscope configuration was used in early instruments when it was desired that the effects of adjustments be quickly observed.
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| 30. | A spectroscopic binary is called double-lined when the absorption lines of both stars can be observed with a spectroscope.
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