mean radius

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• Radius of curvature (applications) — The distance from the center of a sphere or ellipsoid to its surface is its radius. The equivalent surface radius that is described by radial distances at points along the body s surface is its radius of curvature (more formally, the radius of… …   Wikipedia

• Radius of gyration — is the name of several related measures of the size of an object, a surface, or an ensemble of points. It is calculated as the root mean square distance of the objects parts from either its center of gravity or an axis.Applications in structural… …   Wikipedia

• Mean inter-particle distance — (or mean inter particle separation) is the mean distance between microscopic particles (usually atoms or molecules) in a macroscopic body. Contents 1 Ambiguity 2 Ideal gas 2.1 Nearest neighbor distribution …   Wikipedia

• Mean of circular quantities — In mathematics, a mean of circular quantities is a mean which is suited for quantities like angles, daytimes, and fractional parts of real numbers. This is necessary since most of the usual means fail on circular quantities. For example, the… …   Wikipedia

• Mean curvature — In mathematics, the mean curvature H of a surface S is an extrinsic measure of curvature that comes from differential geometry and that locally describes the curvature of an embedded surface in some ambient space such as Euclidean space. The… …   Wikipedia

• Radius of maximum wind — The radius of maximum wind (RMW) of a tropical cyclone is defined to be the distance between the center of the cyclone and its band of strongest winds. It is considered an important parameter in atmospheric dynamics and tropical cyclone… …   Wikipedia

• Earth radius — The Earth s shape, like that of all major planets, approximates a sphere. A true sphere has a unique radius, but on Earth the distance from the mean sea level at each point on the surface to the center (the radius of the Earth at a point on the… …   Wikipedia

• Inverse mean curvature flow — In the field of differential geometry in mathematics, inverse mean curvature flow (IMCF) is an example of a geometric flow of hypersurfaces a Riemannian manifold (for example, smooth surfaces in 3 dimensional Euclidean space). Intuitively, a… …   Wikipedia

• Spherical mean — In mathematics, the spherical mean of a function around a point is the average of all values of that function on a sphere of given radius centered at that point. DefinitionConsider an open set U in the Euclidean space mathbb R^n and a continuous… …   Wikipedia

• Charge radius — The rms charge radius is a measure of the size of an atomic nucleus, particularly of a proton or a deuteron. It can be measured by the scattering of electrons by the nucleus and also inferred from the effects of finite nuclear size on electron… …   Wikipedia

• Atomic radius — Diagram of a helium atom, showing the electron probability density as shades of gray. The atomic radius of a chemical element is a measure of the size of its atoms, usually the mean or typical distance from the nucleus to the boundary of the… …   Wikipedia