...There are many variables of the Algol type, and information issteadily accumulating... 
George Forbes 「History of Astronomy」
...But all variable stars do not suffer the suddenvariations of Algol...
George Forbes 「History of Astronomy」
...The most easterly one is βPersei, known as Algol, the famous variable...
William Tyler Olcott 「A Field Book of the Stars」
...Note a dull red star near Algol, and a pretty pair just above Algenib...
William Tyler Olcott 「A Field Book of the Stars」
...Assuming the orbit to be circular,the velocity of Algol was found to be twenty-six miles per second...
Robert Stawell Ball 「The Story of the Heavens」
...In this case, atany rate, the conjecture hazarded about Algol, that the star revolvesaround a dark central orb, would be insufficient to account for theobserved variation...
Richard A. Proctor 「Half-hours with the Telescope」
...: Great Copernican Myth; a Review of Algol by dePeyster and Allaben...
Dorothy Stimson 「The gradual acceptance of the Copernican theory of the universe」
... De Peyster and Allaben: Algol, 74...
Dorothy Stimson 「The gradual acceptance of the Copernican theory of the universe」
...The star is a remarkable variable, belonging to whatis called the Algol type...
Garrett Serviss 「Pleasures of the telescope」
...The chief attraction in Perseus is the changeful andwonderful β, or Algol, the great typical star among theshort-period variables...
Garrett Serviss 「Pleasures of the telescope」
...Certain stars,called Algol stars, vary in light at regular intervals when partiallyeclipsed by the interposition of a large dark satellite...
Edward C. Pickering 「The Future of Astronomy」
...Roberts, in South Africa, has done splendid work on the periods of variables ofthe Algol type...
George Forbes 「History of Astronomy」
...Note the famousvariable Algol the Demon star...
William Tyler Olcott 「A Field Book of the Stars」
...—A line drawn from the star γ Pegasi to Algol in Perseuspasses through β Trianguli...
William Tyler Olcott 「A Field Book of the Stars」
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