differential geometry, the radius of curvature, R, is the reciprocal of the curvature. For a curve, it equals the radius of the circular arc which best... 12 KB (1,708 words) - 22:09, 29 April 2024 |
Earth's radius involve the radius of curvature. A few definitions yield values outside the range between the polar radius and equatorial radius because... 40 KB (4,265 words) - 19:10, 20 March 2024 |
that of a circle, which has a curvature equal to the reciprocal of its radius. Smaller circles bend more sharply, and hence have higher curvature. The... 44 KB (6,425 words) - 13:18, 21 March 2024 |
Radius of curvature (ROC) has specific meaning and sign convention in optical design. A spherical lens or mirror surface has a center of curvature located... 4 KB (448 words) - 01:45, 24 October 2023 |
length of arc or chord. Curvature is usually measured in radius of curvature. A small circle can be easily laid out by just using radius of curvature, but... 7 KB (777 words) - 09:02, 30 September 2023 |
Knot thickness (section Global radius of curvature) that the local thickness is at most equal to the local radius of curvature. The thickness of a link is defined as τ(L)=infτ(x).{\displaystyle \tau (L)=\inf... 2 KB (279 words) - 22:41, 16 August 2023 |
Centripetal force (section Analysis of several cases) kinematics of curved motion it is known that an object moving at tangential speed v along a path with radius of curvature r accelerates toward the center of curvature... 52 KB (7,791 words) - 06:40, 5 April 2024 |
life. The smaller the bend radius, the greater the material flexibility (as the radius of curvature decreases, the curvature increases). The diagram to... 3 KB (326 words) - 02:49, 26 August 2023 |
geometry, the center of curvature of a curve is found at a point that is at a distance from the curve equal to the radius of curvature lying on the normal... 3 KB (258 words) - 21:31, 9 April 2024 |
normal plane. Profile radius of curvature is the radius of curvature of a tooth profile, usually at the pitch point or a point of contact. It varies continuously... 33 KB (4,299 words) - 02:40, 8 April 2024 |
Osculating circle (redirect from Circle of curvature) 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... 19 KB (3,358 words) - 23:51, 19 September 2023 |
and radius of curvature ρ ( φ ) = 8 3 a sin φ 2 . {\displaystyle \rho (\varphi )={\tfrac {8}{3}}a\sin {\tfrac {\varphi }{2}}\,.} The proofs of these... 26 KB (4,746 words) - 12:28, 10 March 2024 |
Parabola (redirect from Derivations of Conic Sections) in Book 1 of Philosophiæ Naturalis Principia Mathematica as Proposition 30. The focal length of a parabola is half of its radius of curvature at its vertex... 80 KB (13,361 words) - 14:01, 12 March 2024 |
the initial radius of the stream. When the wave number is such that the radius of curvature of the wave dominates that of the radius of the stream, such... 11 KB (1,372 words) - 18:57, 5 October 2023 |
Earth ellipsoid (redirect from Ellipsoid of reference) of curvature so obtained would be related to the equatorial radius and the polar radius, respectively a and b (see: Earth polar and equatorial radius... 19 KB (2,379 words) - 23:35, 14 April 2024 |
and positive curvature respectively). Then r is unitless and a(t) has units of length. When k = ±1, a(t) is the radius of curvature of the space, and... 28 KB (4,171 words) - 19:02, 29 April 2024 |
Focal length (category Science of photography) negative radius of curvature, so f = − R 2 , {\displaystyle f=-{R \over 2},} where R is the radius of curvature of the mirror's surface. See Radius of curvature... 18 KB (2,342 words) - 14:36, 3 April 2024 |
the parcel position and the centre of curvature is the radius of curvature R at that position. The radius of curvature approaches an infinite length at... 41 KB (5,847 words) - 04:40, 29 April 2024 |
Lens clock (section Radius of curvature) the assumption that the lens is relatively thin.) The radius of curvature R {\displaystyle R} of the surface can be obtained from the optical power given... 6 KB (916 words) - 22:34, 4 February 2024 |
Euler spiral (section Expansion of Fresnel integral) curve whose curvature changes linearly with its curve length (the curvature of a circular curve is equal to the reciprocal of the radius). This curve... 23 KB (2,964 words) - 15:38, 22 April 2024 |
Spherometer (section Principles of operation) measurement of the radius of curvature of a curved surface. Originally, these instruments were primarily used by opticians to measure the curvature of the surface... 5 KB (771 words) - 14:34, 4 February 2024 |
Gaussian beam (section Wavefront curvature) at the plane z along the beam, w0 = w(0) is the waist radius, R(z) is the radius of curvature of the beam's wavefronts at z, and ψ(z) is the Gouy phase... 46 KB (6,838 words) - 15:13, 26 March 2024 |
and radius of curvature R, separated by some distance d. For the purposes of ray tracing, this is equivalent to a series of identical thin lenses of focal... 25 KB (3,590 words) - 16:29, 26 January 2024 |