How Do Night Vision Glasses Work?

Answer

Night vision glasses, used for seeing pitch in the dark night, use the little light available to form an image of sufficient brightness to be seen. The image is first focussed, as in a camera, on to a window which is coated with particular chemicals containing sodium, potassium, cadmium and oxygen compounds which produce electrons when illuminated. The electrons so emitted are then accelerated by a series of influential electric fields and made to fall onto another screen coated with fluorescing chemicals which glows recreating a much brighter image of the original scene.
Q&A Related to "How Do Night Vision Glasses Work"
Glasses alter the angle that light enters the eye so that the light can enter at the correct angle and be reflected into the correct part of the cornea. For more information look
http://answers.ask.com/Health/Other/how_do_glasses...
The pupil dilates in low light conditions to allow more light onto the retina. This will, in many people, result in more near-sighted vision at night than during the day. If you normally
http://wiki.answers.com/Q/Why_would_you_need_night...
There is a wide price range when it comes to night vision glasses. They range
http://www.chacha.com/question/how-much-are-night-...
1. Obtain a complete eye examination from a board-certified ophthalmologist to rule out eye problems that can only be repaired with corrective lenses or eye surgery. Ask your ophthalmologist
http://www.ehow.com/how_8181829_increase-vision-gl...
Explore this Topic
Vision Works Eyewear sells glasses and contacts. They also offer eye examinations. They have 580 stores located throughout 39 states in the U.S. and the District ...
Even in the dark, small amounts of light exists. Night vision amplifies these tiny bits of light to enhance vision. Also thermal (heat) imaging is another way ...
Even in the dark, small amounts of light exists. Night vision amplifies these tiny bits of light to enhance vision. Also thermal (heat) imaging is another way ...
About -  Privacy -  AskEraser  -  Careers -  Ask Blog -  Mobile -  Help -  Feedback © 2014 Ask.com