semiaxes

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• Perrin friction factors — In hydrodynamics, the Perrin friction factors are multiplicative adjustments to the translational and rotational friction of a rigid spheroid, relative to the corresponding frictions in spheres of the same volume. These friction factors were… …   Wikipedia

• Singular value decomposition — Visualization of the SVD of a 2 dimensional, real shearing matrix M. First, we see the unit disc in blue together with the two canonical unit vectors. We then see the action of M, which distorts the disk to an ellipse. The SVD decomposes M into… …   Wikipedia

• Intrinsic viscosity — left [ eta ight] is a measure of a solute s contribution to the viscosity eta of a solution. It is defined as:left [ eta ight] = lim {varphi ightarrow 0} frac{eta eta {0{eta {0}varphi} where eta 0 is the viscosity in the absence of the solute and …   Wikipedia

• Ellipticity — El lip*tic i*ty, n. [Cf. F. ellipticit[ e].] Deviation of an ellipse or a spheroid from the form of a circle or a sphere; especially, in reference to the figure of the earth, the difference between the equatorial and polar semidiameters, divided… …   The Collaborative International Dictionary of English

• Ellipse — Elliptical redirects here. For the exercise machine, see Elliptical trainer. This article is about the geometric figure. For other uses, see Ellipse (disambiguation). Not to be confused with ellipsis. An ellipse obtained as the intersection of a… …   Wikipedia

• Hyperbola — This article is about a geometrical curve, a conic section. For the term used in rhetoric, see Hyperbole …   Wikipedia

• Ellipsoid — This article is about the shape. For the type of theatrical spotlight, see ellipsoidal reflector spotlight. For the surface that approximates the figure of the Earth, see reference ellipsoid. triaxial redirects here. For the electrical cable, see …   Wikipedia

• List of moments of inertia — The following is a list of moments of inertia. Mass moments of inertia have units of dimension mass × length2. It is the rotational analogue to mass. It should not be confused with the second moment of area (area moment of inertia), which is used …   Wikipedia

• Laplace–Runge–Lenz vector — Throughout this article, vectors and their magnitudes are indicated by boldface and italic type, respectively; for example, left| mathbf{A} ight| = A. In classical mechanics, the Laplace–Runge–Lenz vector (or simply the LRL vector) is a vector… …   Wikipedia

• Index ellipsoid — In optics, an index ellipsoid is a diagram of an ellipsoid that depicts the orientation and relative magnitude of refractive indices in a crystal. The equation for the ellipsoid is constructed using the electric displacement vector D and the… …   Wikipedia

• Vincenty's formulae — form a fast algorithm to calculate the distance between two latitude/longitude points on an ellipsoid. They have been widely used in geodesy because they are accurate to within 0.5mm (0.000015″) on the Earth ellipsoid. It has been developed by… …   Wikipedia