 The telescope must always be pointed ahead of the real direction of the star, in the *-ame manner as the vane is always in a direction ahead of the wind ; and thus he ascertained the progressive motion of light, and discovered the proportion of its velocity...  A System of Mechanical Philosophy - Síða 628eftir John Robison - 1822 - 50 síðurHeildartexta - Um bókina
 | Colin Macfarquhar, George Gleig - 1797 - 442 síður
...direftion ahead of the wind ; and thus he afcertained the progreffive motion of light, and difcovered the proportion of its velocity to the velocity of the earth in its orbit, by obferving the deviation which was neceflarily given to the telefcope. Obferving that the light ihifted... | |
 | Encyclopaedia Perthensis - 1807 - 758 síður
...its orbit. The telefcope muft always be pointed ahead of the real direction of the ftar, in the fame manner as the vane is always in a direction ahead of the wind; and thus he afcertained the progreffive motion of light, and difcovered the proportion of its velocity to the velocity... | |
 | Encyclopaedia Britannica - 1810 - 824 síður
...its orbit. The telelcope muft always be pointed ahcad of the real direction of the liar, in the lame manner as the vane is always in a direction ahead of the wind ; and thus he afcertained the progreffive motion of light, and difcovcred the proportion oí its velocity to the... | |
 | 1816 - 762 síður
...direction ahead cf the wi:id ; and thus he afcertained the progreffive motion of light, and difcovered the proportion of its velocity to the velocity of the earth in its orbit, by obfrmng Ihe deviation which was neccfihri'y given to the telefcope. Obferving that the lipht Ihifted... | |
 | Encyclopaedia Perthensis - 1816 - 746 síður
...telefcope putt be always pointed aliead of the real direitipn of :he ftar, in the-fdinemanner as the vam is always in a direction ahead of the wind ; and thus he iifcert.iiiied the progit'f<ive motion of light, and difowered tiie proportion of its velocity to the... | |
 | 1823 - 936 síður
...orbit. The telescope must always be pointed nhead of the real direction of the star, in the вате manner as the vane is always in a direction ahead...observing the deviation which was necessarily given to (he triescope. Observing that the light shifted its direction about 40", he concluded its velocity... | |
 | Thomas Curtis (of Grove house sch, Islington) - 420 síður
...its orhit. The telescope must be always pointed a-head of the real direction of the star, in the same manner as the vane is always in a direction a-head...of its velocity to the velocity of the earth in its orhit by observing the deviation which was necessarily given to the telescope. Observing that the light... | |
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