Conversations on Natural Philosophy; In Which the Elements of That Science Are Familiarly Explained and Adapted to the Comprehension of Young Pupils

Conversations on Natural Philosophy; In Which the Elements of That Science Are Familiarly Explained and Adapted to the Comprehension of Young Pupils

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1822 edition. Excerpt: ...before the exact time of the autumnal equinox, the upper edge or limb of the sun begins to be visible at the south pole, and it is there seen constantly travelling round the horizon, and rising gradually higher and higher, till at the end of about 60 hours, after revolving nearly 2 times round the horizon, the whole of its orb is visible. At the same moment that the edge of the sun becomes visible at the south pole, the same edge which appears as the lower limb at the north pole, begins to dip below the horizon, but the sun still continues visible, travelling round the horizon, more and more of it being hid, till, at the end of 60 hours, it totally disappears, just at the same moment when it is fully seen at the south pole. As the earth proceeds towards summer, the days lengthen in the northern hemisphere, and shorten.in the southern, till the earth reaches the summer solstice, when the north frigid zone is entirely illumined, and the southern is in complete darkness; and we have now brought the earth again to the spot from whence we first accompanied her. EMILY. This is, indeed, a most satisfactory explanation of the seasons; and the more I learn, the more I admire the simplicity of means by which such wonderful effects are produced. MRS. B. I know not which is most worthy of our admiration. the cause or the effect of the earth's revolution round the sun. The mind can find no object of contemplation more sublime than the course of this magnificent globe, impelled by the combined powers of projection and attraction to roll in one invariable course around the source of light and heat: and what can be more delightful than the beneficent effects of this vivifying power on its attendant planet. It is at once the grand principle which animates...show more

Product details

  • Paperback | 84 pages
  • 189 x 246 x 4mm | 168g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • Illustrations, black and white
  • 1236646703
  • 9781236646705