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Q.

Which is the galss that darkens in sunlight and lightens in darkness ?

Tags: science, environment, beauty & fashion
Asked by octopus, 09 Oct '11 04:50 pm
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Answers (6)

1.

Photochromic glass
Answered by Anil K Chugh, 09 Oct '11 05:28 pm

 
  
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2.

Photochromic lenses are lenses that darken on exposure to ultraviolet (UV) radiation. Once the UV is removed (for example by walking indoors), the lenses will gradually return to their clear state. Photochromic lenses may be made of glass, polycarbonate, or another plastic.
Source: wiki
Answered by LIPSIKA, 09 Oct '11 05:20 pm

 
  
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3.

Transition lenses are made with photochromic dyes. These dyes react to the sun's UV rays. When the UV rays hit them, the dye reacts and darkens, causing the lenses to darken as well. The darker or lighter the atmosphere is, the more or less the dye reacts. In very bright conditions, the lenses will be extremely dark to protect you from exposing your eyes to too much sunlight. The darker it is, the less the photochromic dye reacts, and the lighter your lenses will be, allowing you to see in dark settings.
Answered by pradeep singh, 09 Oct '11 04:55 pm

 
  
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4.

Photochromic glass
Answered by Quest, 10 Mar '13 10:30 pm

 
  
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5.

Photo Chromic Glass
Answered by rajnikant raiyarela, 09 Oct '11 04:56 pm

 
  
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6.

Polaroid glasses!!
Answered by ajit kulkarni, 09 Oct '11 04:53 pm

 
  
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