Difference between revisions 3901661 and 3901723 on simplewiki

[[File:BiconvexLens.jpg|thumbnail|200px|Lens]] 
A '''lens''' is a piece of [[glass]] or clear (transparent) [[plastic]] ⏎
⏎
that changes the way things look. They may appear larger, smaller, or ⏎
⏎
inverted. Some places lenses are used include spectacles (glasses), ⏎
⏎
contact lenses, cameras, projectors, microscopes, telescopes, magnifying⏎
⏎
 glasses, etc. Eyes are also considered lenses. 

They work by refraction, or the bending of light.

Lenses found in glasses, have three main shapes. Each different shape, ⏎
⏎
manipulates the image slightly (making it bigger or smaller). The three ⏎
⏎
types are as follows:
Convex: bulges outwards from the lens.
Concave: depressed into the lens.
Planar: flat

== History ==
First references about lenses were in the ancient Greek piece of ⏎
⏎
Aristofan "Clouds", where with lenses and sun's light made a fire.

== Other pages ==
* [[Convex lens]]
* [[Concave lens]]
* [[Camera lens]]
* [[Focal length]]


{{tech-stub}}

[[Category:Optics]]

[[ar:عدسة (بصريات)]]
[[az:Linza]]
[[bn:লেন্স]]
[[be:Лінза]]
[[be-x-old:Лінза]]
[[bg:Леща (оптика)]]
[[bs:Leće (optika)]]
[[ca:Lent]]
[[cs:Čočka (optika)]]
[[da:Optisk linse]]
[[de:Linse (Optik)]]
[[dsb:Linsa (optika)]]
[[et:Lääts]]
[[el:Φακός]]
[[en:Lens (optics)]]
[[es:Lente]]
[[eo:Lenso (optiko)]]
[[eu:Leiar]]
[[fa:عدسی]]
[[fr:Lentille optique]]
[[gan:透鏡]]
[[ko:렌즈]]
[[hi:लेंस]]
[[hsb:Čóčka (optika)]]
[[hr:Leća (optika)]]
[[io:Lenso]]
[[id:Lensa]]
[[is:Linsa]]
[[it:Lente]]
[[he:עדשה]]
[[jv:Lènsa]]
[[kk:Оптикалық линза]]
[[ht:Lantiy]]
[[lv:Lēca]]
[[lt:Lęšis (optika)]]
[[hu:Optikai lencse]]
[[mk:Леќа (оптика)]]
[[ml:ലെൻസ്]]
[[ms:Kanta]]
[[nah:Ixtehuilotl]]
[[nl:Lens (optica)]]
[[ja:レンズ]]
[[no:Optisk linse]]
[[nn:Optisk linse]]
[[pl:Soczewka]]
[[pt:Lente]]
[[ro:Lentilă]]
[[qu:Linti]]
[[ru:Линза]]
[[si:කාච (ප්‍රකාශ)]]
[[sk:Šošovka (optika)]]
[[sl:Leča (optika)]]
[[sr:Сочиво (оптика)]]
[[sh:Leća]]
[[fi:Linssi (optiikka)]]
[[sv:Lins]]
[[ta:வில்லை]]
[[te:కటకము (వస్తువు)]]
[[th:เลนส์เว้า]]
[[tr:Mercek]]
[[uk:Лінза]]
[[ur:عدسہ (بصریات)]]
[[vi:Thấu kính]]
[[zh:透镜]]