Ur & kronometrar (horologi)

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  • Roman Portable Sundials

    av

    E-bok, 2016, Engelska, ISBN 9780190273491

    In an unscientific era when maps were rarities, how did ancient Romans envisage their far flung empire? This was done by various means for certain, including with the aid of an

  • My Own Right Time

    av

    inbunden, 1995, Engelska, ISBN 9780198565222

    The pendulum is a constant source of interest to scientists. Great and well-known inventors such as Galileo, Huygens, and Kelvin all devised mechanisms to maintain its even