Lockyer, Norman, Sir, 1836-1920 · London : Macmillan and Co. · leaf 341
ONOMY. as the movements of the heavenly bodies are not arrestedas bodies in movement on the Earths surface are, isstill at work, and suffices for their present movements.Were the attraction of the central body to cease, therevolving body, obeying its original impulse, would leaveits orbit, in… … Fi,s: 70.—The Conic Sections: ^ 5 the circle; C Z) the ellipse ; £ / thehyperbola ; G H the parabola. 625. Next let us inquire how it is that equal areas areswept over in equal times. This is easily understood in acircle, and may be explained as follows in the ellipse :—In a circle the motion is…
Astronomy · Solar system
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