circle of curvature, osculating circle(noun)
the circle that touches a curve (on the concave side) and whose radius is the radius of curvature
The circle that has the same tangent, and the same curvature at the point on the curve
In differential geometry of curves, the osculating circle of a sufficiently smooth plane curve at a given point p on the curve has been traditionally defined as the circle passing through p and a pair of additional points on the curve infinitesimally close to p. Its center lies on the inner normal line, and its curvature is the same as that of the given curve at that point. This circle, which is the one among all tangent circles at the given point that approaches the curve most tightly, was named circulus osculans by Leibniz. The center and radius of the osculating circle at a given point are called center of curvature and radius of curvature of the curve at that point. A geometric construction was described by Isaac Newton in his Principia: There being given, in any places, the velocity with which a body describes a given figure, by means of forces directed to some common centre: to find that centre. — Isaac Newton, Principia; PROPOSITION V. PROBLEM I.
The numerical value of osculating circle in Chaldean Numerology is: 8
The numerical value of osculating circle in Pythagorean Numerology is: 9
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"osculating circle." Definitions.net. STANDS4 LLC, 2017. Web. 25 Jul 2017. <http://www.definitions.net/definition/osculating circle>.