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Knight's Mechanical Encyclopedia (ed. Knight), A. (search)
n also applied to an object-glass micrometer, as well as to an instrument for finding the rising and setting of stars and their positions. As-tro-nom′i cal clock. A clock regulated to keep regular time; sidered, not mean. As-tro-nom′i-cal In′stru-ments. The first phenomenon recorded in the Chinese annals is a conjunction of five planets in the reign of Tehuenhiu (2514 – 2436 B. C.). The record is verified by Fr. de Mailla and others, and identified with 2461 B. C. Saturn, Jupiter, Mars, and Venus were, with the moon, comprised within an are of about 12° in the constellation Pisces. The emperor Yao, 2367 B. C., determined the length of the moon's year. An orrery is said to have been constructed in the second century A. D. in China; the account states that it represented the apparent motion of the heavenly bodies round the earth, and was kept in motion by water dropping from a clepsydra. The heliocentric, the true theory of oar solar system, was taught in Ancient Egy
Knight's Mechanical Encyclopedia (ed. Knight), S. (search)
c. Farther, that the book of the captive, the said Solomon De Caus, was exhibited to the Marquis, who pronounced the madman the greatest genius of the age. The idea took with an imaginative people, and became a subject for painters and dramatists. Finally, grave writers on mechanics and compilers of dictionaries inserted the name of De Caus as the inventor of the steam-engine. The authority for all was a letter, purporting to have been written in 1641 by Marion de Lorme to her lover, Cinq Mars. Mr. Muirhead, in his life of Watt, might exclaim, See how plain a tale shall put thee down! There was, says he, no Marquis of Worcester in 1641. The title of Marquis was not conferred till 1642, and then upon Henry Somerset, the father of the Marquis, the author of The century of inventions, and the person who was doing the mad-house. A French historian farther cites that Solomon De Caus could hardly have been seen at Bicetre in 1641 in a raving condition, as he died in 1630; and farther