Infobox French commune name Lens Lestang region Rh ne Alpes department Dr me arrondissement Valence canton Le Grand Serre INSEE 26162 postal code 26210 mayor Jean Pierre Olmos term 2008&ndash 2014 intercommunality Rh ne Valloire longitude 5.0433 latitude 45.2925 elevation m 300 elevation min m 237 elevation max m 448 area km2 16.41 population 801 population date 2008 Lens Lestang is a Communes of France commune in the Dr me Departments of France department in southeastern France . Population D mographie 1911 976 1962 609 1968 655 1975 636 1982 672 1990 629 1999 667 2008 801 See also Communes of the Dr me department References http www.insee.fr en home home page.asp INSEE reflist commonscat Dr me communes DEFAULTSORT Lenslestang Category Communes of Dr me Dr me geo stub ca Lens Lestang ceb Lens Lestang de Lens Lestang es Lens Lestang eu Lens Lestang fr Lens Lestang it Lens Lestang mg Lens Lestang ms Lens Lestang nl Lens Lestang oc Lens Lestang pms Lens Lestang pl Lens Lestang pt Lens Lestang sk Lens Lestang sv Lens Lestang bug Lens Lestang uk vi Lens Lestang vo Lens Lestang war Lens Lestang ... more details
This article was auto generated by User Polbot . Taxobox name Many Scaled Cylindrical Skink status LC status system IUCN3.1 regnum Animalia phylum Chordata classis Reptilia ordo Squamata familia Scincidae genus Chalcides species C. polylepis binomial Chalcides polylepis binomial authority Boulenger, 1890 synonyms The Many Scaled Cylindrical Skink Chalcides polylepis is a species of skink in the Scincidae family. It is found in Morocco and Western Sahara . Its natural habitat s are temperate forest s, temperate shrubland , Mediterranean type shrubby vegetation, rocky areas, sandy shores, and pastureland. It is threatened by habitat loss . References Geniez, P., Miras, J.A.M., Joger, U., Pleguezuelos, J., Slimani, T. & El Mouden, H. 2005. http www.iucnredlist.org search details.php 61485 all Chalcides polylepis . http www.iucnredlist.org 2006 IUCN Red List of Threatened Species. Downloaded on 10 July 2007. skink stub es Chalcides polylepis pt Chalcides polylepis ... more details
mergeto Cylinder set measure date April 2012 In mathematics &mdash specifically, in measure theory and functional analysis &mdash the cylindrical algebra is a algebra often used in the study of probability measure s and random variable s on Banach space s. For a Banach space X , the cylindrical algebra Cyl X is defined to be the coarsest algebra i.e. the one with the fewest measurable sets such that every continuous linear function on X is a measurable function . In general, Cyl X is not the same as the Borel algebra on X , which is the coarsest algebra that contains all open subsets of X . See also Cylinder set Cylinder set measure References cite book last1 Ledoux first1 Michel last2 Talagrand first2 Michel author2 link Michel Talagrand title Probability in Banach spaces publisher Springer Verlag location Berlin year 1991 pages xii 480 isbn 3 540 52013 9 mr 1102015 See chapter 2 Category Functional analysis Category Measure theory pl cia o zbior w cylindrycznych ... more details
Bernard Lens may refer to one of three British artists Bernard Lens 1631 1708 , probably from the Netherlands , also the writer of several religious tracts Bernard Lens II 1659 1725 , son of the former, mezzotint engraver Bernard Lens III 1682 1740 , son of the former, portrait miniature portrait miniaturist Category Artist families Lens Category Portrait miniaturists Lens, Bernard Category British engravers Lens, Bernard ... more details
File Miller projection SW.jpg thumb 450px A Miller projection of the Earth . image World map Miller cylindrical projection, blank .svg thumb 450px The Miller cylindrical projection is a modified Mercator projection , proposed by Osborn Maitland Miller 1897&ndash 1979 in 1942. The latitude is scaled by a factor of 4 5, projected according to Mercator, and then the result is multiplied by 5 4 to retain scale along the equator. ref Flattening the Earth Two Thousand Years of Map Projections , John P. Snyder, 1993, pp. 179, 183, ISBN 0 226 76747 7. ref Hence math x lambda , math math y frac 5 4 ln left tan left frac 1 4 pi frac 2 5 varphi right right math where &lambda is the longitude from the central meridian of the projection, and math varphi , math is the latitude. Meridians are thus about 0.733 the length of the equator. In GIS applications, this projection is known as EPSG 54003 World Miller Cylindrical References references External links http www.radicalcartography.net ?projectionref Table of examples and properties of all common projections , from radicalcartography.net http www.uff.br mapprojections Miller1 en.html An interactive Java Applet to study the metric deformations of the Miller Projection . http mathworld.wolfram.com MillerCylindricalProjection.html Math formulae information http spatialreference.org ref esri 54003 Spatial information http www.progonos.com furuti MapProj Dither ProjCyl projCyl.html Historical information cartography stub Category Cartographic projections ja pt Proje o de Miller ru ... more details
Unreferenced date December 2009 Cylindrical multipole moments are the coefficients in a series expansion of a potential that varies logarithmically with the distance to a source, i.e., as math ln R math . Such potentials arise in the electric potential of long line charges, and the analogous sources for the magnetic potential and gravitational potential . For clarity, we illustrate the expansion for a single line charge, then generalize to an arbitrary distribution of line charges. Through this article ... the potential is being observed. We use cylindrical coordinates throughout, e.g., an arbitrary ... z math axis. Cylindrical multipole moments of a line charge Image cylindrical multipole.png frame right Figure 1 Definitions for cylindrical multipoles looking down the math z prime math axis The electric ... frac lambda k frac sin k theta prime left rho prime right k . math General cylindrical multipole moments ... rho theta math plane. Interior cylindrical multipole moments Similarly, the interior cylindrical ... lambda rho prime , theta prime math Interaction energies of cylindrical multipoles A simple formula for the interaction energy of cylindrical multipoles charge density 1 with a second charge density ... energy is given by the integral of the charge multiplied by the potential due to the cylindrical multipoles math U int d theta int rho d rho lambda rho, theta Phi rho, theta math If the cylindrical ... math Q 1 math , math C 1k math and math S 1k math are the cylindrical multipole moments of charge ... C 1k I 2k S 1k J 2k right math where math I 2k math and math J 2k math are the interior cylindrical ... of interior cylindrical multipoles math U frac Q 1 ln rho prime 2 pi epsilon int rho d rho lambda ... math I 1k math and math J 1k math are the interior cylindrical multipole moments of charge distribution 1, and math C 2k math and math S 2k math are the exterior cylindrical multipoles of the second ... moments DEFAULTSORT Cylindrical Multipole Moments Category Electromagnetism Category Potential ... more details
Unreferenced stub auto yes date December 2009 In optics , a simple lens or singlet lens is a lens optics lens consisting of a single simple element. Typical examples include a magnifying glass or a lens in a pair of simple glasses reading glasses . Simple lenses are prone to aberration in optical systems aberrations , especially chromatic aberration . They cannot be used for precise imaging and make poor camera lens es. They are commonly used for laser applications, however, where the beams are both monochromatic minimizing chromatic aberration and narrow minimizing spherical aberration . Some camera s with Focus free lens fixed lenses have been made using a simple lens, usually a meniscus lens with the convex face facing outward. In such examples the lens aperture is made small and in some cases such as the Kodak Brownie camera Brownie 127 camera , the photographic film film plane is curved to reduce the impact of aberrations. See also Lens optics Doublet lens Aspheric lens DEFAULTSORT Simple Lens Category Photographic lenses Category Lenses Optics stub zh ... more details
Unreferenced date December 2009 Image Canon EFS 18 to 55 m lense covers.JPG thumb Canon company Canon lens covers. File 62mm lens cap.jpg thumb Screw in metal lens cap A lens cover or lens cap provides protection from scratches and minor collisions for camera and camcorder photographic lens lenses . Lens covers come standard with most cameras and lenses. Some mobile camera phone s include lens covers, such as the Sony Ericsson W800 , the Sony Ericsson K750 and the Sony Ericsson K550 . A more secure lens cap is the metal screw in lens cap which cannot pop off a lens accidentally. Although a screw in cap takes more time to remove in order to take a photograph than a standard lens cap, it is stronger than plastic and therefore more protective. See also Lens hood DEFAULTSORT Lens Cover Category Photography equipment ... more details
Image Parabolic cylindrical coordinates.png thumb right 350px Coordinate system Coordinate surface Coordinate surfaces of parabolic cylindrical coordinates. The red parabolic cylinder corresponds to 2, whereas the yellow parabolic cylinder corresponds to 1. The blue plane corresponds to z 2. These surfaces intersect at the point P shown as a black sphere , which has Cartesian coordinate system Cartesian coordinates roughly 2, 1.5, 2 . In mathematics , parabolic cylindrical coordinates are a three dimensional orthogonal coordinates orthogonal coordinate system that results from projecting the two dimensional parabolic coordinates parabolic coordinate system in the perpendicular math z math direction. Hence, the Coordinate system Coordinate surface coordinate surfaces are confocal parabola parabolic cylinders. Parabolic cylindrical coordinates have found many applications, e.g., the potential theory of edges. Basic definition Image Parabolic coords.svg thumb right 250px Parabolic coordinate system showing curves of constant &sigma and &tau the horizontal and vertical axes are the x and y coordinates respectively. These coordinates are projected along the z axis, and so this diagram will hold for any value of the z coordinate. The parabolic cylindrical coordinates math sigma, tau, z math are defined in terms of the Cartesian coordinates x,y,z by math x sigma tau , math math y frac 1 2 left tau 2 sigma 2 right math math z z , math The surfaces of constant math sigma math form confocal parabolic cylinders math 2y frac x 2 sigma 2 sigma 2 math that open towards math y math ... article. Scale factors The scale factors for the parabolic cylindrical coordinates math sigma math and math ... and z are conicoid, Laplace s equation is separable in parabolic cylindrical coordinates ... The classic applications of parabolic cylindrical coordinates are in solving partial differential ... MathWorld description of parabolic cylindrical coordinates Orthogonal coordinate systems Category ... more details
Image Bipolar cylindrical coordinates.png thumb 350px right Coordinate system Coordinate surface Coordinate surfaces of the bipolar cylindrical coordinates. The yellow crescent corresponds to , whereas the red tube corresponds to and the blue plane corresponds to z 1. The three surfaces intersect at the point P shown as a black sphere . Bipolar cylindrical coordinates are a three dimensional orthogonal coordinates orthogonal coordinate system that results from projecting the two dimensional bipolar coordinates bipolar coordinate system in the perpendicular math z math direction. The two lines of Focus geometry foci math F 1 math and math F 2 math of the projected Apollonian circles are generally taken to be defined by math x a math and math x a math , respectively, and by math y 0 math in the Cartesian coordinate system . The term bipolar is often used to describe other curves having two singular points foci , such as ellipse s, hyperbola s, and Cassini oval s. However, the term bipolar coordinates is never used to describe coordinates associated with those curves, e.g., elliptic coordinates . Basic definition The most common definition of bipolar cylindrical coordinates math sigma, tau, z math is math x a frac sinh tau cosh tau cos sigma math math y a frac sin sigma cosh tau cos sigma math math z z math where the math sigma math coordinate of a point math P math equals the angle math F 1 P F 2 math and the math tau math coordinate equals the natural logarithm of the ratio of the distances math d 1 math and math d 2 math to the focal lines math tau ln frac d 1 d 2 math Recall that the focal lines math F 1 math and math F 2 math are located at math x a math and math x a math , respectively. Surfaces of constant math sigma math correspond to cylinders of different radii ... of variables . A typical example would be the electric field surrounding two parallel cylindrical ... of bipolar cylindrical coordinates Orthogonal coordinate systems Category Coordinate systems zh ... more details
The Gauss lens consists of two lens optics lenses in its most basic form, a positive Lens optics Types of simple lenses meniscus lens on the object side and a negative meniscus lens on the image side. The Optical power power of the positive element predominates, but the negative element corrects for chromatic aberration . See also Double Gauss lens Category Lenses optics stub ... more details
Image Elliptic cylindrical coordinates.png thumb right 350px Coordinate system Coordinate surface Coordinate surfaces of elliptic cylindrical coordinates. The yellow sheet is the prism of a half hyperbola corresponding to 45 , whereas the red tube is an elliptical prism corresponding to 1. The blue sheet corresponds to z 1. The three surfaces intersect at the point P shown as a black sphere with Cartesian coordinate system Cartesian coordinates roughly 2.182, 1.661, 1.0 . The foci of the ellipse and hyperbola lie at x 2.0. Elliptic cylindrical coordinates are a three dimensional orthogonal coordinates orthogonal coordinate system that results from projecting the two dimensional elliptic coordinates elliptic coordinate system in the perpendicular math z math direction. Hence, the Coordinate system Coordinate surface coordinate surfaces are prism geometry prisms of confocal ellipse s and hyperbola e. The two Focus geometry foci math F 1 math and math F 2 math are generally taken to be fixed at math a math and math a math , respectively, on the math x math axis of the Cartesian coordinate system . Basic definition The most common definition of elliptic cylindrical coordinates math mu, nu, z math is math x a cosh mu cos nu math math y a sinh mu sin nu math math z z math where math mu math is a nonnegative real number and math nu in 0, 2 pi math . These definitions correspond to ellipses and hyperbolae. The trigonometric identity math frac x 2 a 2 cosh 2 mu frac y 2 a 2 sinh 2 ... for the elliptic cylindrical coordinates math mu math and math nu math are equal math h mu h nu a sqrt ... The classic applications of elliptic cylindrical coordinates are in solving partial differential equations , e.g., Laplace s equation or the Helmholtz equation , for which elliptic cylindrical ... expressed in elliptic cylindrical coordinates, may be solved by separation of variables, leading to the Mathieu ... EllipticCylindricalCoordinates.html MathWorld description of elliptic cylindrical ... more details
Orphan date February 2009 Merge to Swashplate engine date September 2010 Merge to Revolving cylinder engine date September 2010 The Cylindrical Energy Module is a sine waved Swashplate engine that can also be used as a stand alone pump powered by an alternate source. The rotating swash plate rotor assembly is moved back and forth via piston drive pins which follow a stationary Sinusoidal Cam Track that encircles the rotor assembly. For more information on how that works please check out the Swashplate engine page. The new pump design has been used in fire extinguishers, as well as mobile biological and chemical control units for the http www.epindustries.com decon.html US military . Inventor s claims of pump design Only 7 moving parts Virtually clog free operation Its weight is about one sixth that of an equal capacity unit Its output is 24 times that of most pumps or compressors of equal bore and stroke, and twice that of most engines. Can be made out of thermoplastic s for light weight uses pumps only . This version of the pump compressor was invented by Eddie Paul, president of http www.epindustries.com EP Industries in El Segundo, CA. patented in 1993 Expand section date April 2007 Category Internal combustion piston engines Category Pumps Category Engine technology Category Piston engines ... more details
Image cambo lens board.jpg thumb right 200px Cambo lens board with Copal 1 A Lens board commonly spelled as lensboard is a photographic part used for securing a lens to the front standard of a large format view camera . The lens board itself is usually flat, square, and made of metal most commonly Aluminum or wood and sometimes plastic. The lens board will have a hole of various diameters drilled dead center on the board. A lens board typically varies between 1 and 4 millimeters in thickness. The overall size and shape of the lens board depends on the brand of camera and film format used. Some cameras will use 2 to 4 screws to secure the lens board to the front standard of the view camera, most commonly however, the lens board will be secured by one or more locking levers or tabs to allow tool less removal of the lens board. The rear surface of a lens board is usually painted matte black to keep light entering the camera through the lens during exposure from reflecting off the surface and interfering with the projected image. While most lens boards are flat, some are recessed to accommodate wider focal length lenses which must be positioned closer to the film plane . A recessed lens ... length of a particular lens, a certain diameter of hole must be drilled in the center of the lens board to accommodate the shutter photography shutter assembly . Lens boards are typically available pre drilled by the camera manufacturer, however, if no replacement lens board is available from a camera ... 1 41.6 mm Copal 3 65 mm Copal 3s 64.5 mm Lens mounting Image graphex lens board.jpg thumb right 200px 135mm Optar lens mounted on a 0 Speed Graphic lens board Lenses are fitted to a lens ... photography shutter assembly by threading a locknut to rear of the shutter. A front lens element will thread onto the mounted shutter and if necessary, a second lens element will thread onto the rear ... with the appropriate tools. Other uses Image enlarger lens board.jpg thumb right 200px Enlarging lens ... more details
Primary lens redirects here. See also prime lens . In photography , a secondary lens is a photographic lenslens designed to be used in conjunction with another lens, called the primary lens . A secondary lens may be designed to be used either in front of the primary lens, between it and the subject, or behind the primary lens, between it and the film. Secondary lenses are typically simpler in mechanical ... of Focus optics focus or aperture , as these are achieved by the controls on the primary lens. Lenses used in front of the primary lens Examples of secondary lenses designed to be used in front of the primary lens are Fisheye lens Fisheye adaptors Corrected wide angle lens wide angle adaptors Telephoto adaptors such as teleside converter s Close up lens es All of these typically mount on the filter ring of the primary lens. Front mounting secondary lenses are commonly used to provide wide angle and telephoto lenses for cameras which lack the facility to change the primary lens, such as consumer ... the primary lens Teleconverters main teleconverter The most common secondary lens used behind the primary lens is the teleconverter . A typical teleconverter has a male and a female lens mount of the same type, to allow it to be used between a primary lens and a camera body of the matching system. The resulting combination has a greater focal length than the primary lens alone, and the same absolute ..., and when used in this combination deliver quality comparable to the primary lens. Others are general purpose, and in use typically offer less image quality then a primary lens of the same quality ... adaptor, as the angle of view of the primary lens is matched to the film format for which is designed ... to use the primary lens for wider angles than those for which it is designed is therefore likely to cause ... lens to adapt a lens of one camera system and or film format to another. These are called active adaptors or converters. For example, a Pentax screw mount lens cannot normally be mounted on a Nikon ... more details
DISPLAYTITLE Lens genus Taxobox name Lens image Illustration Lens culinaris0.jpg image width 200px image caption Lens culinaris regnum Plantae unranked divisio Angiosperms unranked classis Eudicots unranked ordo Rosids ordo Fabales familia Fabaceae subfamilia Faboideae tribus Fabeae genus Lens genus authority Mill. subdivision ranks Species subdivision Lentil Lens culinaris Lentils br Lens ervoides br Lens lamottei br Lens nigricans br td tr tr td Ref http www.ildis.org ILDIS Version 6.05 The genus Lens of the legume family Fabaceae contains four species of small, erect or climbing herb s with pinnate Leaf leaves and small inconspicuous white flower s and small flattened pods. The edible seed s of Lens species are referred to as lentil s the lentil most commonly eaten is the seed of Lens culinaris . External links http gisweb.ciat.cgiar.org GapAnalysis ?p 271 Crop Wild Relatives Gap Analysis Portal reliable information source on where and what to conserve ex situ , regarding Lens genepool DEFAULTSORT Lens Genus Category Faboideae Faboideae stub ar az M rcim k cins ca Lens g nere da Linse sl gten de Linsen dsb Sok rod es Lens planta fr Lens genre hy hsb Sok r d it Lens botanica ka lt L is augalas nl Lens geslacht ru sv Linssl ktet vi Lens chi ... more details
In imaging optics, a field lens is a positive powered lens or group of lenses that comes after the objective lens and before the image plane or the eyepiece , serving to change the size of the image, ref http www.colorado.edu physics phys1230 phys1230 fa01 topic43.html Judah Levine, University of Colorado Physics 1230 Light and Color The Field Lens. Fall 2001 ref ref http spie.org x34410.xml SPIE Optopedia Field Lens ref or to provide image space telecentricity . References Reflist optics stub Category Lenses Category Microscope components de Feldlinse ... more details
Infobox Belgium Municipality name Lens picture Lens Hainaut L tang du moulin.jpg picture legend map Lens Hainaut Belgium Map.png map legend Location of Lens in Hainaut arms flag region BE REG WAL community BE FR province BE PROV HT arrondissement Arrondissement of Mons Mons nis 53046 pyramid date 0 19 20 64 65 foreigners foreigners date mayor Ghislain Moyart PS majority Socialist Party francophone Belgium PS , Reformist Movement MR postal codes 7870 telephone area 065 web http www.lens.be www.lens.be lat deg 50 lat min 33 lon deg 03 lon min 54 Lens is a Wallonia Walloon municipality located in the Belgium Belgian province of Hainaut province Hainaut . In 2007 its population was 4042. ref http statbel.fgov.be downloads pop200701com.xls Werkelijke bevolking per gemeente op 1 januari 2007 Population de droit par commune au 1 janvier 2007 .xls ref The total area is 49.42 km which gives a population density of 80 inhabitants per km . It is located at 50 33 North, 03 54 East, alongside the N56 road Belgium N56 road . ref http statbel.fgov.be pub d1 p120 nl.xls Geografische co rdinaten van de gemeenten .xls ref References Reflist Hainaut Hainaut geo stub Category Municipalities of Hainaut province br Lens Belgia bg ca Lens B lgica de Lens Belgien eo Lens Belgio fa fr Lens Belgique it Lens Belgio nl Lens Belgi pt Lens B lgica ro Lens Belgia ru simple Lens Belgium sk Lens Belgicko vi Lens, Hainaut vo Lens Belg n wa Linse war Lens, Belhika ... more details
additionalcitations date April 2011 A Lens Controller is device that controls motorized photographic lens functions such as Zoom lens zoom , Focus optics focus , and Iris diaphragm iris or aperture. ref Kruegle, Herman 2007 . CCTV Surveillance , Butterworth Heinemann. ref Lens controllers can be found internally in modern still camera photographic lens es and as a stand alone unit in machine vision , remote sensing , optoelectronics systems, and security applications. Internal Photographic Lens Controllers Internal lens controllers take information from the camera or lens elements and perform automatic ... zoom lens and used mainly for photography. Stand Alone Photographic Lens Controllers Stand alone lens controllers are attached to a photographic lens by a cable to allow operator manual control of lens functions. Machine Vision, CCTV, or Computer Vision Lens Controllers Lens controllers for machine ... there is no standard for wiring of lenses most have Direct Current DC motors attached to lens elements and are controlled with 6 VDC, 8 VDC or 12 VDC. Machine vision lens controllers come in manual or computerized varieties. Manual lens controllers are composed of switches and a power supply. When the operator actuates a switch , a function of the lens is enabled. Manual control requires an operator to view the image through the lens in which adjustment is taking place. Manual lens controllers are the most common and are frequently used in CCTV security systems. Computerized lens controllers ... interface. A remote computer sends a command to the lens controller through an RS232 , RS485 , USB , or Ethernet interface to actuate a lens function. The Lens Controller will then perform the command automatically. If a lens is equipped with presets, potentiometers attached to lens ... and move to a specific position. If the lens is not equipped with presets, then the controller can only move a lens function to an approximate position. References See Wikipedia Footnotes on how to create ... more details
boldsymbol hat z end matrix math Cylindrical frac partial B partial td math begin matrix left A rho ... Vector fields in cylindrical and spherical coordinates References Reflist External links http www.csulb.edu woollett Maxima Computer Algebra system scripts to generate some of these operators in cylindrical ... more details
Unreferenced stub auto yes date December 2009 In geology a lens is a body of ore or Rock geology rock or a deposit that is thick in the middle and thin at the edges, resembling a convex lens in cross section. Adjective lenticular . A lens can also refer to an irregular shaped formation consisting of a porous , Permeability fluid permeable sedimentary deposit surrounded by impermeable rock. DEFAULTSORT Lens Geology Category Petrology Category Sedimentology Geology stub it Lente geologia pt Lente geologia uk ... more details
Unreferenced date December 2009 Infobox Anatomy Name Capsule of lens Latin capsula lentis GraySubject 226 GrayPage 1019 Image Gray883.png Caption The upper half of a sagittal section through the front of the Human eye eyeball . Capsule of lens labeled at center right. Image2 Caption2 System Precursor MeshName MeshNumber DorlandsPre DorlandsSuf The lens capsule is a component of the Human eye eye . It is a clear, membrane like structure that is quite elastic, a quality that keeps it under constant tension. As a result, the lens naturally tends towards a rounder or more globular configuration, a shape it must assume for the eye to Focus optics focus at a near distance. See also Lens anatomy Eye anatomy DEFAULTSORT Capsule Of Lens Category Eye anatomy Eye stub ja ... more details
Breathing refers to when a lens optics lens optics change the apparent focal length slightly when shifting the mechanical focus optics focus . Some often higher quality lenses are designed to lessen the degree this effect. Lens breathing does not prevent one from racking focus or follow focus following focus with this lens, but it lessens the desirability of any type of focus adjustment, since it noticeably changes the composition of the shot. Not to be confused with the suction and expulsion of air from within the lens as its internal volume changes. DEFAULTSORT Breathing Lens Category Film and video terminology Filming stub ... more details
Unreferenced date February 2007 A triplet lens is an optics optical device consisting of three single Lens optics lenses . The triplet design is the simplest to give the required number of Degrees of freedom physics and chemistry degrees of freedom to allow the lens designer to overcome all Seidel aberration s. File Lens triplet.svg right thumb A Lens triplet Triplet lens . The term is used in two ways. The three lenses may be cemented together, as in the Steinheil triplet . Or a triplet may be designed with three spaced glasses, e.g. the Cooke triplet . Category Lenses optics stub ... more details
Infobox Anatomy Name Crystalline lens anatomy Latin lens crystallina GraySubject 226 GrayPage 1019 Image ... point of a near object being brought to a focus by changing the curvature of the lens. Image2 Schematic ... Artery Vein Nerve Lymph MeshName Crystalline lens MeshNumber DorlandsPre l 06 DorlandsSuf 12483326 The crystalline lens is a transparent, Lens optics Types of simple lenses biconvex structure in the eye that, along with the cornea , helps to refract light to be Focus optics focused on the retina . The lens ... on the retina. This adjustment of the lens is known as Accommodation eye accommodation see also ... lens lenses . The lens is flatter on its anterior side. The lens is also known as the aquula Latin, a little stream , dim. of aqua , water or crystalline lens . In humans, the refractive power of the lens in its natural environment is approximately 18 dioptre s, roughly one third of the eye s total power. Position, size, and shape The lens is part of the anterior segment of the eye. Anterior to the lens is the iris anatomy iris , which regulates the amount of light entering into the eye. The lens is suspended in place by the Zonule of Zinn suspensory ligament of the lens , a ring of fibrous tissue that attaches to the lens at its equator ref http www.biology online.org dictionary Equator of lens ref ref http medical dictionary.thefreedictionary.com equator of the crystalline lens ref and connects it to the ciliary body . Posterior to the lens is the vitreous body , which, along with the aqueous humor on the anterior surface, bathes the lens. The lens has an ellipsoid, biconvex shape. The anterior surface is less curved than the posterior. In the adult, the lens is typically ... that the size and shape can change due to accommodation and because the lens continues to grow ... 1790 6 ref Variations among vertebrates In many aquatic vertebrates, the lens is considerably thicker ... 677 . Boston McGraw Hill ref Even among terrestrial animals, however, the lens of primate s such as humans ... more details
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