Schmall, Charles Nelson. [from old catalog] · New York, D. Van Nostrand company · leaf 271
e is h. (« hen ^ = 2 TT, p 27r circumference = 2 -.■) Again, since p 6 = k, the arc AB described with the radius vector ofany point A is constant. The line parallel to the initial line OX and at adistance k above it is an asymptote to the infinite branch, for as p ap-proaches Qo, the arc AB becomes… … Fig. 148. Discussion. — The curve begins at the pole [when ^ = 0, p = 0] and winds continaally around it, always receding from it. The radiusvector becomes infinite after an infinite number of spires have beendescribed. 210. The lituus. — In this curve, the square of the radiusvector varies…
Geometry, Analytic
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