...Not far off is a very curious star, β of Perseus, or Algol, whichforms a little triangle with two others smaller than itself...
Camille Flammarion Frances A. Welby 「Astronomy for Amateurs」
...But all variable stars do not suffer the suddenvariations of Algol...
George Forbes 「History of Astronomy」
...Roberts, in South Africa, has done splendid work on the periods of variables ofthe Algol type...
George Forbes 「History of Astronomy」
...Note a dull red star near Algol, and a pretty pair just above Algenib...
William Tyler Olcott 「A Field Book of the Stars」
...Stars of this class are all very remote, and noattempt has as yet been made to ascertain the parallax of Algol...
Thomas Orchard 「The Astronomy of Milton's 'Paradise Lost'」
...We shall see in a following chapter how it has been provedthat the variability of Algol is due to the occasional interposition ofa dark companion which cuts off a part of the lustre of the star...
Robert Stawell Ball 「The Story of the Heavens」
...The following are the approximate elements ofthe Algol system found by Vogel:—...
Robert Stawell Ball 「The Story of the Heavens」
...The Algol system appears to be composed of a body about asbroad as our sun, which regularly eclipses a brighter body which has adiameter about half as great again...
Cecil G. Dolmage 「Astronomy of To-day」
...Since the companion of Algol is often spoken of as a dark body, itwere well here to point out that we have no evidence at all that it isentirely devoid of light...
Cecil G. Dolmage 「Astronomy of To-day」
..., Algol, the most famous of these variablestars, at its maximum of brightness furnishes three timesas much light as when at its minimum, and other variablestars show an even greater range...
George C. Comstock 「A Text-Book of Astronomy」
...The Algol variables...
George C. Comstock 「A Text-Book of Astronomy」
... De Peyster and Allaben: Algol, preface...
Dorothy Stimson 「The gradual acceptance of the Copernican theory of the universe」
...An interesting variable,of the type of Algol, is λ, which at maximum is ofmagnitude three and four tenths and at minimum of magnitudefour and two tenths...
Garrett Serviss 「Pleasures of the telescope」
...We are already acquainted with the variations of Algol, in Perseus, dueto its partial eclipse by a dark globe gravitating in the line of ourvision...
Camille Flammarion Frances A. Welby 「Astronomy for Amateurs」
...The most easterly one is βPersei, known as Algol, the famous variable...
William Tyler Olcott 「A Field Book of the Stars」
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