Letters on Astronomy: Addressed to a Lady; in which the Elements of the Science are Familiarly Explained in Connexion with Its Literary HistoryMarsh, Capen, Lyon and Webb, 1841 - 419 ページ |
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... supposed from the difference of size . Distinctness of view is all - important to the perform- ance of an instrument . The object may be sufficiently bright , yet , if the image is distorted , or ill - defined , the illumination is of ...
... supposed from the difference of size . Distinctness of view is all - important to the perform- ance of an instrument . The object may be sufficiently bright , yet , if the image is distorted , or ill - defined , the illumination is of ...
41 ページ
... supposed that the advantage of large instru- ments is , that they will bear high magnifying powers . But this is not their only , nor even their principal , ad- vantage . A good light and large field are qualities , for most purposes ...
... supposed that the advantage of large instru- ments is , that they will bear high magnifying powers . But this is not their only , nor even their principal , ad- vantage . A good light and large field are qualities , for most purposes ...
68 ページ
... supposed by some to have been traditionally derived from the creation of the world ; while others imagine it to have been regu- lated by the phases of the moon . The names , Satur- day , Sunday , and Monday , are obviously derived from ...
... supposed by some to have been traditionally derived from the creation of the world ; while others imagine it to have been regu- lated by the phases of the moon . The names , Satur- day , Sunday , and Monday , are obviously derived from ...
106 ページ
... supposed respecting them . They attracted the notice of Galileo soon after the invention of the telescope , and he formed an hypothesis respecting their nature . Supposing the sun to consist of a solid body embosom- ed in a sea of ...
... supposed respecting them . They attracted the notice of Galileo soon after the invention of the telescope , and he formed an hypothesis respecting their nature . Supposing the sun to consist of a solid body embosom- ed in a sea of ...
108 ページ
... supposed to exist in the im- mediate vicinity of a fire so intense , that they are even dissipated by it at the distance of ninety - five millions of miles ? Much less can they be supposed to be the depositories of such devouring fire ...
... supposed to exist in the im- mediate vicinity of a fire so intense , that they are even dissipated by it at the distance of ninety - five millions of miles ? Much less can they be supposed to be the depositories of such devouring fire ...
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多く使われている語句
angle appear ascertain astronomers atmosphere attraction axis called celestial centre circle comet conjunction constellation degrees diameter direction discovery disk distance diurnal motion doctrine double stars earth ecliptic equal equator equinox exhibited fact fixed stars force Galileo globe gravity greater greatest half Halley's comet heavenly bodies heavens Hence Herschel horizon hundred inferior conjunction instrument John Herschel Jupiter Kepler latitude laws length less light longitude lunar lunar eclipse magnitude measure Mercury meridian meteors millions of miles minutes moon moon's motion move Nature nearer nearly node objects observations opposite orbit parallax passing perihelion period phenomena planetary planets pole respect revolve right ascension ring round satellites Saturn seen shadow side space spectator sphere sun's superior planets supposed surface telescope thousand tides tion truth Tycho Tycho Brahe universal gravitation Uranus velocity Venus vernal equinox visible west to east