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  • 1910-1914  (1)
  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 92 (1913), S. 425-425 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ABOUT forty years ago I learnt a formula which I have used ever since. It was 7x = 4y2; x = height of observer in feet, y = distance of horizon in miles. I do not now know where I found this formula, but it will be seen, if a few examples are worked out, that it agrees very ...
    Type of Medium: Electronic Resource
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