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Knight's Mechanical Encyclopedia (ed. Knight) 6 0 Browse Search
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red to so far. The study of astronomy in China is as ancient as the time of Abraham, and the earliest known observations are Chinese (see astronomical instruments), though we have statements of ancient historians that observations quite as ancient were made by the Chaldeans. The dials commonly used in China are mentioned by Mohammedan travelers in that country in the ninth century. After all this, it seems idle to quote the saying of Pliny, that the sun-dial was originally invented by Anaximander of Miletus (550 B. C.); but that curious writer, to whose appetite for information we owe so much, felt bound to give an origin for everything. He might even have read in Homer (950 B. C.), the not very recondite reference to a sun-dial: — These curious eyes, inscribed with wonder, trace The sun's diurnal and his annual race. The building in Athens long known as the Tower of the winds is now known as the Horological monument of Andronicus Cyrrhestes. It had eight faces, each pr
ged as to present the end of the grain outwardly. They are fed with emery-cake; and by cutlers the wooden surface is frequently used without any leather covering. Globe. A sphere on which is represented the heavenly bodies; a celestial globe. A round model of the world, representing the land and sea, and usually the political divisions. A terrestrial globe. A celestial globe was taken from Egypt to Greece, 368 B. C. A terrestrial globe is said to have been made in the time of Anaximander of Miletus, about 550 B. C. This is highly improbable. The determination of the latitude and longitude of places was of a later date, and is a necessary incident of a terrestrial globe. The celestial globe of Billarus was taken away from Sinope by Lucullus (Strabo). The same writer mentions the sphere of Crates; Cicero that of Archimedes. Perhaps this was a planetarium. The planisphere of Dendera in Egypt is a circular diagram of the zodiacal signs, and the most ancient and intere
a composition which does not burn so fast as rocket-composition. They are driven similarly to rockets, but solid, and are attached, at short intervals apart, to wooden frames, usually circular, to produce what are called stationary and revolving suns and other similar effects in pyrotechny, giving out a steady and brilliant stream of light while burning. Sun-di′al. A time-measurer, in which a gnomon casts a shadow upon a graduated plate. Said by Pliny to have been invented by Anaximander of Miletus, 550 or 562 B. C. The dial of Ahaz, referred to by Hezekiah, was near two centuries precedent to that of the Grecian. It probably originated with the Chaldees or with the race of Asiatic descent known to us as Egyptians, who were the dwellers in the valley of the Nile at the period of Abraham, and long previous. See dial. Sunk coak. (Carpentry.) A mortise or recess in the scarfed face of a timber, and designed to receive the counterpart coak or tenon of the other tim