Astronomy

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Astronomy - copertina
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  • Categoria libro:

    Scienze, Saggistica

  • Anno:

    2017

  • Dimensione del file:

    14,7 MB

  • Protezione DRM FREE
  • Lingua:

    eng

  • Isbn:

    9780243642878

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€ 8,85
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Quarta di copertina


The sale of 3000 copies Of this book in little more than a year, many of them to persons Of more educa~ tion than I originally contemplated, has induced me to enlarge it considerably, going rather deeper into the subject, and adding some explanations which I did not venture on before. The additions chiefly relate to meteors, nebulae, and stars, the moon's acceleration and other disturbances, the tides, and the calculations for Easter in all ages; and a fuller account Of the meth ods of weighing the sun, moon, and planets. The chap ter on telescopes also has been greatly enlarged; for astronomy lives by them, and I do not know where a popular explanation Of the theory Of telescopes is to be found.

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