BICONCAVE - ترجمة إلى العربية
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BICONCAVE - ترجمة إلى العربية

OPTICAL DEVICE WHICH TRANSMITS AND REFRACTS LIGHT
Convex lens; Concave lens; Lenses; Optical lens; Thin Lens Formula; Thin lens formula; Lens maker's formula; Lens Maker's Formula; Lens formula; Lens Formula; Diverging lens; Lens maker equation; Lensmaker's equation; Lens maker's equation; Lens makers equation; Converging lens; Biconvex lens; Biconcave lens; Convex Lens; Meniscus lens; Crystal Lens; Curved lens; Spherical lens; Convex lenses; Compound lens; Lensmaker's formula; Lensmakers' equation; Lensmakers' forumula; Lensmakers forumula; Lensmakers equation; Lensmaker equation; Lensmaker formula; Plano-convex lens; Double convex lens; Plano-concave lens; Convex-concave lens; Negative lens; Equiconvex lens; Real-is-positive convention; Lens equation; Biconcave; Planoconcave; Plus lens; Convexo-concave lens; Minus lens; Conventional lens; LENS; Singlet (lens); Double-convex lens; Double concave lens; Double-concave lens; Bi-convex lens; Bi-concave lens; Double-convex converging lens; Double convex converging lens; Biconvex converging lens; Bi-convex converging lens; Double-concave diverging lens; Biconcave diverging lens; Bi-concave diverging lens; Double concave diverging lens; Meniscus (optics); Positive lens; Plano-concave; Planoconvex lens; Lens (optics); Optical lenses
  • A biconvex lens
  • 400px
  • Close-up view of a flat [[Fresnel lens]].
  • LSST]], a planned sky surveying telescope
  • 250px
  • 400px
  • Lenses can be used to focus light
  • Types of lenses
  • Meniscus lenses: negative (top) and positive (bottom)
  • Light being refracted by a spherical glass container full of water. [[Roger Bacon]], 13th century
  • An aspheric biconvex lens.
  • The position of the focus of a spherical lens depends on the radii of curvature of the two facets.
  • A watch with a plano-convex lens over the date indicator
  • Images of black letters in a thin convex lens of focal length ''f'' are shown in red. Selected rays are shown for letters '''E''', '''I''' and '''K''' in blue, green and orange, respectively. '''E''' (at 2''f'') has an equal-size, real and inverted image; '''I''' (at ''f'') has its image at [[infinity]]; and '''K''' (at ''f''/2) has a double-size, virtual and upright image.

BICONCAVE         

الصفة

ثنائي التقعر

biconcave         
مُقَعَّرُ الوَجْهَيْن
biconcave         
‎ مُقَعَّرُ الوَجْهَين‎

تعريف

Biconcave
·adj Concave on both sides; as, biconcave vertebrae.

ويكيبيديا

Lens

A lens is a transmissive optical device that focuses or disperses a light beam by means of refraction. A simple lens consists of a single piece of transparent material, while a compound lens consists of several simple lenses (elements), usually arranged along a common axis. Lenses are made from materials such as glass or plastic and are ground, polished, or molded to the required shape. A lens can focus light to form an image, unlike a prism, which refracts light without focusing. Devices that similarly focus or disperse waves and radiation other than visible light are also called "lenses", such as microwave lenses, electron lenses, acoustic lenses, or explosive lenses.

Lenses are used in various imaging devices like telescopes, binoculars, and cameras. They are also used as visual aids in glasses to correct defects of vision such as myopia and hypermetropia.