A London encyclopaedia, or universal dictionary of science, art, literature and practical mechanics : comprising a popular view of the present state of knowledge : illustrated by numerous engravings, a general atlas, and appropriate diagrams (1829)
Curtis, Thomas, fl. 1820 · London : Thomas Tegg · leaf 567
method was toadd others, till a nearer approximation was ob-tainea. This system owed its origin to a preju-dice that seems to have been extremely ancient,in favor of uniform and circular motion ; andthe problem that chiefly occupied the astrono-mers in those times, was to assign the… … Let C be the centre both of the earth and ofthe circle F B D, and let H G /c be a smallercircle, called an epicycle, whose centre B move^uniformly in the circumference F B D from westto east, or in consequentia, while the sun movesalso uniformly, and with the same velocity, inthe circumference of…
Encyclopedias and dictionaries · Aeronautics
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