2619087 Tsar Nicholas I inaugurating the semaphore telegraph line between Moscow and Warsaw in 1833, using a modification of Claude Chappe\'s semaphore system, from Les Merveilles de la Science, published c.1870 (engraving) by French School, (19th century); Private Collection; (add.info.: The Tsar is turning the mechanism which altered the position of the signalling arms on top of the tower. Nicholas I (6 July 1796 ??2 March 1855), Emperor of Russia from 1825 until 1855.); French, out of copyright.

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達志影像

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