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" This remarkable law of variation appears strongly to suggest the revolution round it of some opaque body, which, when interposed between us and Algol, cuts off a large portion of its light. " It is, "
An Introduction to Astronomy: Designed as a Textbook for the Use of Students ... - Page 246
by Denison Olmsted - 1839 - 276 pages
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American Journal of Science and Arts, Volume 57

Science - 1849 - 488 pages
...greater than that assigned by Mr. Melville." magnitude. It then begins again to increase, and in 3£ hours more is restored to its usual brightness, going through all its changes in 2d 20s" 48-" or thereabouts."* Light occupies more than 7,500 times as long in reaching us from the...
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Astronomy

Sir John Frederick William Herschel - Astronomy - 1833 - 444 pages
...in about 3^ hours is reduced to the fourth magnitude. It then begins again to increase, and in 3 '? hours more is restored to its usual brightness, going through all its changes in 2d 20h 48m, or thereabouts. This remarkable law of variation certainly appears strongly to suggest...
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Astronomy

sir John Frederick W. Herschel (1st bart.) - 1833 - 500 pages
...and in about 3^ hours is reduced to the fourth magnitude. It then begins again to increase, and in 3V hours more is restored to its usual brightness, going through all its changes in 2d 20h 48m, or thereabouts. This remarkable law of variation certainly appears strongly to suggest...
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An Elementary Treatise on Astronomy: Adapted to the Present Improved State ...

John Farrar - Astronomy - 1834 - 504 pages
...in about 3£ hours is reduced to the fourth magnitude. It then begins again to increase, and in 3£ hours more is restored to its usual brightness, going through all its changes in 2d 20h 4Sm, or thereabouts. This remarkable law of variation certainly appears strongly to suggest...
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A Treatise on Astronomy

John Frederick William Herschel - Astronomy - 1835 - 414 pages
...through all its changes in 3d 20h 48™, or thereabouts. This remarkable law of variation certainly appears strongly to suggest the revolution round it...us and Algol, cuts off a large portion of its light ; and this is accordingly the view taken of the matter by Goodricke, to whom we owe the discovery of...
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Distant glimpses; or, Astronomical sketches

Frances Barbara Burton - 1837 - 202 pages
...is reduced to a star of the fourth magnitude. It then begins to increase ; and in 3 hours and a half more, is restored to its usual brightness, going through all its changes in the period of 2 days, 20 hours and 48 minutes or thereabouts. The above remarkable fact was first ascertained...
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Astronomy simplified

Frances Barbara Burton - 1838 - 146 pages
...reduced to a star of the fourth magnitude. It then hegins to increase ; and in three hours and a half more is restored to its usual brightness, going through all its changes in the period of 2 days 20 hours and 48 minutes or thereabouts. The above remarkable fact was first ascertained...
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The Elements of the Theory of Astronomy

John Hymers - Astronomy - 1840 - 386 pages
...continues for about 18 m without sensible alteration. It then begins again to increase, and in 4 h 40 m more is restored to its usual brightness, going through all its changes in 2.8673 days. These appearances have been supposed to be owing to the revolution round Algol of some...
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Letters on Astronomy: Addressed to a Lady; in which the Elements of the ...

Denison Olmsted - Astronomy - 1841 - 486 pages
...hours is reduced to the fourth magnitude. It then begins again to increase, and in three and a half hours more is restored to its usual brightness, going...strongly to suggest the revolution round it of some opaque body, which, when interposed between us and Algol, cuts off a large portion of its light. "...
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An Elementary Astronomy for Academies and Schools: Illustrated by Numerous ...

Hiram Mattison - Astronomy - 1849 - 290 pages
...in about 3^ hours it is reduced to the fourth magnitude. It then begins again to increase, and in 3^ hours more is restored to its usual brightness, going through all its changes in 2 days 20 hours and 48 minutes, or thereabouts. Through all its successive changes, this star shines...
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