单词 | Parabolic Coordinates | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
释义 | Parabolic CoordinatesA system of Curvilinear Coordinates in which two sets of coordinate surfaces are obtained by revolving the parabolasof Parabolic Cylindrical Coordinates about the x-Axis, which is then relabeled the z-Axis. Thereare several notational conventions. Whereas is used in this work, Arfken (1970) uses . The equations for the parabolic coordinates are
where , , and . To solve for , , and , examine
so
The Scale Factors are
The Line Element is
The Helmholtz Differential Equation is Separable in parabolic coordinates.See also Confocal Paraboloidal Coordinates, Helmholtz Differential Equation--Parabolic Coordinates, Parabolic Cylindrical Coordinates
Arfken, G. ``Parabolic Coordinates (, , ).'' §2.12 in Mathematical Methods for Physicists, 2nd ed. Orlando, FL: Academic Press, pp. 109-112, 1970. Morse, P. M. and Feshbach, H. Methods of Theoretical Physics, Part I. New York: McGraw-Hill, p. 660, 1953. |
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