Scientific Dialogues: Intended for the Instruction and Entertainment of Young People : in which the First Principles of Natural and Experimental Philosophy are Fully Explained, Հատոր 1
J. Grigg, T. Desilver, E. Littel, Towar & Hogan, and Kimber & Sharpless, 1829
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according acting advantage angle appear applied attraction axis body called cause centre Charles circle clock consequently considerable CONVERSATION course darkness days and nights described diameter direction distance earth eclipse Emma equal equator evident explain fall Father feet figure fixed stars force former four full moon gained give globe gravity greater half happen heat heavens hemisphere hence horizon inch inclined inhabitants James journey kind known larger length less lever light March matter means measured mechanical miles millions minutes month moon motion move natural nearer observe opposite orbit parallel passed planet Plate poles position pound present principle proportion raised rays respect revolves rise rotation round seasons seen shadow side situated space summer sun's supposed surface tides tion turn Tutor understand Venus vertical visible weight whole winter
Էջ 177 - Amid the radiant orbs, That more than deck — that animate — the sky, The life-infusing suns of other worlds ; Lo ! from the dread immensity of space Returning, with accelerated course, The rushing comet to the Sun descends ; And as he sinks below the shading earth, With awful train projected o'er the heavens, 1710 The guilty nations tremble.
Էջ 161 - On earth join all ye creatures to extol Him first, him last, him midst, and without end. Fairest of stars, last in the train of night, If better thou belong not to the dawn, Sure pledge of day, that crown'st the smiling morn With thy bright circlet, praise him in thy sphere, While day arises, that sweet hour of prime.
Էջ 144 - Less than archangel ruined, and the excess Of glory obscured ; as when the sun, new risen, Looks through the horizontal misty air Shorn of his beams, or from behind the moon, In dim eclipse, disastrous twilight sheds On half the nations, and with fear of change Perplexes monarchs.
Էջ 109 - Of thirty years, to Mercury, whose disk Can scarce be caught by philosophic eye, Lost in the near effulgence of thy blaze.
Էջ 109 - One sun by day, by night ten thousand shine ; And light us deep into the DEITY.
Էջ 126 - evidence of things not seen," in the fulness of Divine grace ; and was profound on this, the greatest concern of human life, while unable even to comprehend how the " inclination of the earth's axis to the plane of its orbit" could be the cause of the change of the seasons.
Էջ 41 - These are usually accounted six in number, viz. the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Wedge, and the Screw.
Էջ 86 - To ask or search I blame thee not, for heaven Is as the book of God before thee set, Wherein to read his wondrous works, and learn His seasons, hours, or days, or months, or years.
Էջ 28 - If the force with which it strikes the air below it, is equal to the weight of its body, then the re-action of the air upwards is likewise equal to it, and the bird being acted upon by two equal forces in contrary directions, will rest between them. If the force of the stroke is greater than its weight, the bird will rise with the difference of these two forces ; and if the stroke be less than its weight, then it will sink with the difference.