Base curve radius (BCR) or simply base curve (BC) is the measure of an important parameter of a lens in optometry. On a spectacle lens, it is the flatter...

radius of curvature, R, is the reciprocal of the curvature. For a curve, it equals the radius of the circular arc which best approximates the curve at...

{\displaystyle K} . Radius of curvature (applications) Radius Base curve radius Cardinal point (optics) Vergence (optics) "Radius of curvature of a lens"...

predecessor Ballistic coefficient, a measure of air drag on a projectile Base curve radius, a parameter of a contact lens Battle command, a military discipline...

specified in a contact lens prescription may include: Brand name Material Base curve radius (BC, BCR) Diameter (D, OAD) Optical power in diopters (dpt) Center...

Birmingham, England B-cell receptor, a transmembrane receptor protein Base curve radius, a parameter of a contact lens Benzoyl-CoA reductase, an enzyme BCR...

straightaways (tangents) and curves, or between two different curves. In the horizontal plane, the radius of a transition curve varies continually over its...

of its starting point on the curve. The curve is a cycloid, and the time is equal to π times the square root of the radius of the circle which generates...

longer than the radius, but the radius is thicker. The radius is a long bone, prism-shaped and slightly curved longitudinally. The radius is part of two...

BCOR may stand for: Back central optic radius, an alternative term for the base curve radius of a contact lens The human gene BCOR that encodes the BCL-6...

curve Compound curve Transition curve Reverse curve Deviation curve Two types of vertical curves on roads: Valley curve Summit curve A simple curve has...

tangent indicatrix of a curve of constant precession Spherical polyhedron Sphericity Tennis ball theorem Volume-equivalent radius Zoll sphere r is being...

angle between a radius vector to a point, P, on an involute curve and a radial line to the intersection, A, of the curve with the base circle. Expressed...

A Bézier curve (/ˈbɛz.i.eɪ/ BEH-zee-ay, French pronunciation: [bezje]) is a parametric curve used in computer graphics and related fields. A set of discrete...

ellipsoid), the radius ranges from a maximum (equatorial radius, denoted a) of about 6,378 km (3,963 mi) to a minimum (polar radius, denoted b) of nearly...

the radius of the circle defined by the ogive radius. The rocket body will not be tangent to the curve of the nose at its base. The ogive radius ρ is...

curvature is more convenient for calculating and laying out the curve if the radius is as large as a kilometer or mile, as is needed for large scale...

it is the path traced by a curve while rolling on another curve without slipping. Roughly speaking, a roulette is the curve described by a point (called...

distance from the curve matches the radius of curvature. These are the points where the curve touches the evolute. If the progenitor curve is a boundary of...

rectangle whose height is the radius of the defining circle and whose width is twice the diameter of the circle. The curve was studied by Pierre de Fermat...

A hypotrochoid is a curve traced by a point attached to a circle of radius r rolling around the inside of a fixed circle of radius R, where the point is...

mathematics, an affine algebraic plane curve is the zero set of a polynomial in two variables. A projective algebraic plane curve is the zero set in a projective...

Huygens. From the 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...

simple curve which has the same radius throughout that curved track. The second type is compound curve which comprises two or more simple curves of different...

mathematics, a brachistochrone curve (from Ancient Greek βράχιστος χρόνος (brákhistos khrónos) 'shortest time'), or curve of fastest descent, is the one...

observer on or near the surface of the relevant body. This curve divides all viewing directions based on whether it intersects the relevant body's surface or...

half the radius of the arc. By connecting points mO and nO, points D and E are established. An isosceles triangle DOE is then traced, with its base equal...

infinity and the parabola becomes a closed curve (elliptical projection). To generate a hyperbola, the radius of the directrix circle is chosen to be less...

The distance between any point of the circle and the centre is called the radius. The length of a line segment connecting two points on the circle and passing...

measure the versines along an existing curve. Based on the versine values, the radius of that circular curved track can be approximated to: r ≈ L 2 8...