...Those relating to the stars were reduced by Bessel and publishedin 1818, at Königsberg, in his well-known standard work, FundamentaAstronomiae...
George Forbes 「History of Astronomy」
...The fact that Sirius had not been moving uniformly was of such interestthat it arrested the attention of Bessel when he discovered theirregularities in 1844...
Robert Stawell Ball 「The Story of the Heavens」
...The name of Bessel stands outconspicuously in this memorable chapter of astronomy...
Robert Stawell Ball 「The Story of the Heavens」
...Almost simultaneously with theclassical labours of Bessel we have Struve's measurement of the distanceof Vega, and Henderson's determination of the distance of the southernstar α Centauri...
Robert Stawell Ball 「The Story of the Heavens」
...—It is a remarkable fact, first investigatedby the German astronomer Bessel, three quartersof a century ago, that where extreme accuracy is requiredthe human senses can not be implicitly relied upon...
George C. Comstock 「A Text-Book of Astronomy」
...It does revolve round Sirius in aperiod of 49·4 years—almost exactly what Bessel assigned to it...
Oliver Lodge 「Pioneers of Science」
...The distance to the fixed stars is so vast,however, that this final proof of the earth's motion was not attainedtill 1838 when Bessel (1784-1846) observed stellar parallax fromKönigsberg...
Dorothy Stimson 「The gradual acceptance of the Copernican theory of the universe」
...From the time of Copernicus to that of Bessel manyattempts had been made to measure the parallax of the stars, and morethan once had some eager astronomer thought himself successful...
Simon Newcomb 「Side-lights on Astronomy and Kindred Fields of Popular Science」
...The factthat the subsequent invention by Bessel may have been independent doesnot detract from the merits of either...
Simon Newcomb 「Side-lights on Astronomy and Kindred Fields of Popular Science」
...On his return home, Bessel endeavoured todetermine the longitude of Bremen...
Thomas Orchard 「The Astronomy of Milton's 'Paradise Lost'」
...The star selected by Bessel is a binary known as 61 Cygni, thecomponents being of magnitudes 5·5 and 6 respectively...
Thomas Orchard 「The Astronomy of Milton's 'Paradise Lost'」
...This star will always be an object of interest to astronomers, as it wasthe first of the stellar multitude that revealed to Bessel the secret ofits distance...
Thomas Orchard 「The Astronomy of Milton's 'Paradise Lost'」
...At length, however, between the years 1835 and1840, it was discovered by the Prussian astronomer, Bessel, that a starknown as 61 Cygni—that is to say, the star marked in celestial atlasesas No...
Cecil G. Dolmage 「Astronomy of To-day」
...The first ascertaineddisplacement of a star, namely that of 61 Cygni, noted by Bessel in theyear 1838, definitely proved to men the truth of the Copernican system...
Cecil G. Dolmage 「Astronomy of To-day」
...Here heconstructed the famous "Dorpat refractor" for Struve, which is still atwork; and designed the "Königsberg heliometer" for Bessel...
Oliver Lodge 「Pioneers of Science」
...But Bessel also assigned a dark companion to Procyon...
Oliver Lodge 「Pioneers of Science」
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