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...' is the curve of intersection of two right circular cylinders of [[Radius|radii]] <math>a</math> and <math>b,</math> whose axes intersect perpendicularly. In the case when the two cylinders have equal radii the curve degenerates to two intersecting [[ellipse]]s. ...

Given ''H''&nbsp;&isin;&nbsp;(0,&nbsp;1), there exist discs of radii ''r''_''i'' such that ...

...sity and sufficiency|sufficient and necessary condition]] for the [[Radius|radii]] of two [[N-sphere|spheres]] and the distance of their centers, so that a For two spheres (<math>2</math>-spheres) with respective radii <math>r</math> and <math>R</math>, fulfilling <math>r<R</math>, there exist ...

[[Category:Radii]] ...

...ess the magnetic field in terms of magnetic latitude and distance in Earth radii. The '''magnetic latitude''' (MLAT), or [[geomagnetic latitude]], <math>\la where <math>R</math> in this case has units of Earth radii (<math>R = r/R_E</math>). ...

...''r_A'' and ''r_B'' denote the [[Atomic radius|atomic radii]] of the two atoms. [[Category:Radii]] ...

...is a dimensionless number that is calculated from the ratio of the [[ionic radii]]:<ref name="Johnsson & Lemmens 2007" /> ...hinzer 1998" /> || Different structures || A ions and B have similar ionic radii. ...

Its radius of convergence is at least as large as the minimum of the radii of convergence of <math>p(x)</math>, <math>q(x)</math> and <math>g(x)</math ...

The following table lists equivalent radii for various conductor cross-sections derived assuming 1) all dimensions are ! align="center"| Two circular conductors<br> with unequal radii ...

...'') centred at zero, and secondly as the distribution of the corresponding radii ...

...s determines the maximum weight that can be lifted by hand. If the pulley radii are close enough, then the load will remain in place (and not lower under t ...mass]]es a short distance. It consists of two fixed [[pulley]]s of unequal radii that are attached to each other and rotate together, a single pulley bearin ...

...ed for [[Frederick Soddy]], who rediscovered [[Descartes' theorem]] on the radii of mutually tangent quadruples of circles. ...perimeter]]. Then the three circles centered at <math>A, B, C</math> have radii <math>s-a, s-b, s-c</math>, respectively. ...

<math>a\in A</math> and radii <math>x^{-1} > 0</math>. ...

*For the [[Earth radius#Radii of curvature|radius of curvature of the Earth]] (approximated by an oblate ...radii of curvature, while providing the accuracy of the order of 0.1% for radii of curvature of 90 meters and more.<ref>{{cite web|author=Peter Walecki |ur ...

...8~\text{km}\right)^{1/3}=6371.0~\text{km}</math>. The equatorial and polar radii of a planet are often denoted <math>r_{e}</math> and <math>r_{p}</math>, re [[Category:Radii]] ...

[[File:Boolean model.svg|right|thumb|Realization of Boolean model with random-radii discs.]] ...

* For planet [[Earth]], which can be approximated as an oblate spheroid with radii {{val|6378.1|u=km}} and {{val|6356.8|u=km}}, the 3D mean radius is <math>R= ...ulating circle]] and [[osculating sphere]] define [[curvature]]-equivalent radii at a particular [[point of tangency]] for [[plane figure]]s and solid figur ...

...l (mathematics)|ball]] between two [[concentric]] [[sphere]]s of differing radii.<ref name="Wolfram"/> ...

...ies of the electrons entering a narrow slit at one end so that their final radii depend on their kinetic energy. The analyzer, therefore, provides a mapping ...f two concentric hemispherical electrodes (inner and outer hemispheres) of radii <math>R_{1}</math> and <math>R_{2}</math> held at proper voltages. In such ...

...ement set]] (TLE) files, where it is to be given in units of inverse Earth radii.<ref>{{cite web|title=Frequently Asked Questions: Two-Line Element Set Form ...