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accordance amount appear astronomers attraction axis ball base line Biot bodies calculation cause celestial centre centrifugal force Chapter coincident conclusion connection consequence considered cross deduced determined diameter diminish direction distance drawn earth east effect employed equal equator estimate evidence example exist extending fact fall feet gravity greater heat hence hour hypothenuse line inches increase known larger triangle length less light mass matter means measurement mentioned method miles millions moon motion moving namely necessary object oblique observed opposite orbit parallax parallel passing perpendicular phenomena planets pole position possible present progressive motion proper proportion prove quotation reason reduced regarded relative represent result revolve right angled rotation seen shown sides smaller triangle space spheres square star sun's supposed surface telescope theory third tion tower train triangle velocity Venus vertical line
Página 61 - Heat is a very brisk agitation of the insensible parts of the object, which produces in us that sensation from whence we denominate the object hot ; so what in our sensation is heat, in the object is nothing but motion.
Página 66 - ... diminishing, or, in other words, the mean distance from the sun, or the major axis of the ellipse, dwindling by slow but regular degrees. This is evidently the effect which would be produced by a resistance experienced by the comet from a very rare...
Página 7 - ... by a substance almost infinitely elastic, through which the pulses of light make their way. . . . The luminous ether fills stellar space; it makes the universe a whole, and renders possible the intercommunication of light" and energy between star and star.
Página 27 - The square of the hypothenuse is equal to the sum of the squares of the other two sides ; as, 5033 402+302.
Página 66 - Accordingly, no other mode of accounting for the phenomenon in question appearing, this is the solution proposed by Encke, and generally received. It will, therefore, probably fall ultimately into the sun, should it not first be dissipated altogether, a thing no way improbable, when the lightness of its materials is considered...
Página 27 - The square of the hypothenuse of a right angled triangle is equal to the sum of the squares of both the other sides.