- symmetric lens
- симметричная линза
English-russian dictionary of physics. 2013.
symmetric lens
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Lens (geometry) — In geometry, a lens is a convex shape comprising two circular arcs, joined at their endpoints. If the arcs have equal radii, it is called a symmetric lens.The corresponding shape is the lune. The Vesica piscis is one form of a symmetrical lens;… … Wikipedia
Lens (optics) — For other uses, see Lens. A lens. Lenses can be used to focus light. A lens is an optical device with perfect or approximate axial symmetry which tra … Wikipedia
Luneburg lens — Cross section of the standard Luneburg lens, with blue shading proportional to the refractive index A Luneburg lens (originally Lüneburg lens, often incorrectly spelt Luneberg lens … Wikipedia
Double-Gauss lens — The double Gauss design with optical ray traces The double Gauss lens is a compound lens used mostly in camera lenses that reduces optical aberrations over a large focal plane. Contents 1 Design … Wikipedia
Madison Symmetric Torus — Infobox Magnetic Fusion Device name = Madison Symmetric Torus dev type=Reversed field pinch loc=Madison, Wisconsin, USA rad maj = 1.50 m rad min = 52 cm aspect = 2.88|The Madison Symmetric Torus (MST) is a reversed field pinch (RFP) physics… … Wikipedia
Einzel lens — The Einzel lens is used in ion optics to focus ions in flight and is accomplished through manipulation of the electric field in the path of the ions. It consists of three or more sets of cylindrical or rectangular prisms in series along an axis.… … Wikipedia
Gravitational lensing formalism — In general relativity, a point mass deflects a light ray with impact parameter b by an angle hat{alpha} = frac{4GM}{c^2b}. A naïve application of Newtonian gravity can yield exactly half this value, where the light ray is assumed as a massed… … Wikipedia
Vesica piscis — The vesica piscis is a shape which is the intersection of two circles with the same radius, intersecting in such a way that the center of each circle lies on the circumference of the other. The name literally means the bladder of the fish in… … Wikipedia
Doctor Who (series 1) — Doctor Who series 1 DVD box Country of origin United Kingdom … Wikipedia
Cardinal point (optics) — For other uses, see Cardinal point (disambiguation). In Gaussian optics, the cardinal points consist of three pairs of points located on the optical axis of an ideal, rotationally symmetric, focal, optical system. For ideal systems, the basic… … Wikipedia
Schneider Kreuznach — is the abbreviated name of the company Jos. Schneider Optische Werke GmbH, which is sometimes also simply referred to as Schneider. They are a manufacturer of industrial and photographic optics.The company was founded on 18 January 1913 by Joseph … Wikipedia
