Elements of astronomy ... with explanatory notes, and questions for examination (1855)
Brocklesby, John, 1811-1889 · New York, Farmer, Brace & co. · leaf 30
heir eccentricity ; one being almost a circle,and the other very oval. 1. Eccentric, from ex out of\ and centrum centre, (Latin) out of thecentre. Construct nn ellipse 1 What is meant by the term eccentricity 1 22 ASTRONOMY. 19. A Sphere. A sphere is a solid, bounded by acurved surface, every point… … A SPHERE WITH ITS SECTIONS. sphere. Thus in Fig. 11, representing a sphere, thepoints D, O, L, A, E, H, N, &c, are all equally distantfrom the centre C. DE and AB, are diameters, andCP, CL, CA, CB, &c, are each a radius. If a plane passes through a sphere, any section itmakes with the…
Astronomy
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