Fail:Huygens first pendulum clock - front view.png

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Keterangan
English: Drawing of the first pendulum clock, designed by Dutch scientist Christiaan Huygens in 1657. Huygens contracted his clock designs to clockmaker Salomon Coster of The Hague, who actually built the clock. The pendulum had a wider swing than modern clocks, perhaps 80°-100°, due to its verge escapement. The drive force for the clock was provided by the two weights at bottom in an ingenious "endless rope" mechanism.
Tarikh
Sumber Downloaded 2010-03-07 from Ernst Gerland and Friedrich Traumüller (1899) Geschichte der physikalischen Experimentierkunst, Wilhelm Engelmann, Leipzig, Germany, p.182, fig.182 on Google Books
Pengarang Unknown authorUnknown author
Kebenaran
(Penggunaan semula fail ini)		 Public domain

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This is a faithful photographic reproduction of a two-dimensional, public domain work of art. The work of art itself is in the public domain for the following reason:
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The official position taken by the Wikimedia Foundation is that "faithful reproductions of two-dimensional public domain works of art are public domain".
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Tarikh/WaktuGambar kenitUkuranPenggunaKomen
semasa17:26, 7 Oktober 2010Gambar kenit bagi versi pada 17:26, 7 Oktober 2010328 × 871 (46 KB)Chetvorno{{Information |Description={{en|Drawing of the first Wikipedia:pendulum clock, designed by Dutch scientist Christiaan Huygens in 1657 and built by clockmaker Salomon Coster.}} |Source=Downloaded 2010-03-07 from [http://books.google.com/books?i

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