 | Hiram Mattison - 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... | |
 | John Frederick William Herschel - 1849 - 672 pages
...the fourth magnitude, at which it continues about 15 m . It then begins again to increase, and in 33r hours more is restored to its usual brightness, going through all its changes in 2 d 20 h 48 m 58'-5. This remarkable law of variation certainly appears strongly to suggest the revolution... | |
 | Hugo Reid - 1850 - 156 pages
...and in about 3J hours is reduced to the fourth magnitude. It then begins again to increase, and in 3i hours more is restored to its usual brightness, going through" all its changes in 2 days, 20 hours, 48 minutes." — Hersdicl. phenomena, it has been ascertained that the velocity of... | |
 | William Augustus Norton - 1852 - 522 pages
...after which it suddenly begins to diminish in splendor, and in about 85 hours is reduced to a star of the fourth magnitude. It then begins again to increase,...usual brightness, going through all its changes in 2d. 20h. 48m. t 579. There are also a number of double stars, one or both of the members of which are... | |
 | Denison Olmsted - 1855 - 484 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. "... | |
 | Hiram Mattison - 1856 - 254 pages
...in about 3y hours, it is reduced to the 4th magnitude. It then begins again to increase, and in Z\ 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... | |
 | John Frederick William Herschel - 1857 - 586 pages
...splendour, and in about 3} hours is reduced to the fourth magnitude, at which it continues about 15m. It then begins again to increase. and in 3J hours...usual brightness, going through all its changes in 2d 20b 48™ 58'-5. This remarkable law of variation cer1 Astronom. Nachr. No. 624. ' Lalande's Astronomy,... | |
 | Denison Olmsted - 1858 - 454 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. "... | |
 | John Frederick William Herschel - 1861 - 572 pages
...the fourth magnitude, at which it continues about 15m. It then begins again to increase, and in 3 J hours more is restored to its usual brightness, going through all its changes in2d20h48m58s-5. This remarkable law of variation cer1 Astronom. Nachr. No. 624. 3 Lalande's Astronomy,... | |
 | W.H.C. BARTLETT,LL.D., - 1865 - 494 pages
...the fourth magnitude, at which it continues for about I5m. It then begins to increase, and in 3h.5 is restored to its usual brightness, going through all its changes in 2d 20h 48m 58S.5. Recent observations indicate that this period is on the decrease, and not uniformly,... | |
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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, 
