An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 4 Search : convex lens
biconvex lens
  عدسی ِ دوکوژ   
adasi-ye dokuž

Fr.: lentille biconvexe   

A spherical lens with two convex faces. The radii of curvature for the two surfaces may or may not be the same.

Biconvex, from → bi- + → convex; → lens.

Adasi, → lens; dokuž "biconvex" from do-, → bi- + kuž, → convex.

concavo-convex lens
  عدسی ِ کاو-کوژ   
adasi-ye kâv-kuž (#)

Fr.: lentille concavo-convexe   

A type of → convergent lens that is concave on one surface and convex on the opposite surface. Also called → meniscus lens. Meniscus lenses are used most often in conjunction with another lens to produce an optical system of a longer or shorter → focal length than the original lens.

concave; → convex; → lens.

convex lens
  عدسی ِ کوژ   
adasi-ye kuž (#)

Fr.: lentille convexe   

A lens that converges an incident beam of light to a focus.

convex; → lens.

plano-convex lens
  عدسی ِ تخت-کوژ   
adasi-ye taxt-kuž (#)

Fr.: lentille plano-convexe   

A → convergent lens that has one flat side and one convex side. Plano-convex lenses focus parallel rays of light to a positive point, thus forming → real images.

plano-; → convex; → lens.