en
Gratis
Jules Verne

All Around the Moon

  • rizaldihar citeretfor 6 år siden
    hypsometer, or instrument for ascertaining the heights of the Lunar mountains by the barometric pressure under which water boils, a sextant to measure the altitude of the Sun, a theodolite for taking horizontal or vertical angles, telescopes, of indispensable necessity when the travellers
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