How does night vision technology work? A Black Hawk helicopter seen through night vision goggles. (Thinkstock)
How does night vision technology work?
Lexile

You asked us a question. How does night vision technology work?
 
Our eyes allow us to see a wide range of lights. That changes when the sun goes down. When the sun goes down our ability to make out stuff drops off quickly. Colors fade. Things get fuzzy. Our eyes become useless. And we're what goes bump in the night.
 
Cue night vision technology.
 
There are two very cool types. The first is thermal imaging. It registers on the upper portion of the infrared light spectrum. It is invisible to humans. 

This kind of light is emitted as heat by things like warm bodies. It's emitted from recently driven cars and even some chemicals.

Thermal imaging devices can see through the fog, smoke and dust.
 
Type number two amplifies available light from the visible spectrum as well as some infrared light. It makes things look brighter than they appear to the naked eye. 

Most night vision equipment uses this imaging enhancement technology. But it's useless if it's pitch black.
 
It was originally developed to spot enemy targets. Now night vision is used for all kinds of things. It's used in this from military gear to baby monitors. Because you know, you've got to get the upper hand on these babies.

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CRITICAL THINKING QUESTION
Why would baby monitors use military technology?
Write your answers in the comments section below


COMMENTS (29)
  • sarahj-bel
    4/21/2016 - 01:57 p.m.

    Baby monitors would use military technology because then you can see better.

    • joscelynb-
      5/04/2016 - 11:15 a.m.

      who would think that baby monitors is the same as the military technology.

  • tylerr2-bel
    4/21/2016 - 01:58 p.m.

    To see the baby in the dark.

  • sophies-bel
    4/21/2016 - 02:00 p.m.

    So parents can see if their baby's dieing.

  • jolenec-bel
    4/21/2016 - 02:02 p.m.

    It would use military technology to see if they are crying or if they need to eat.

  • tl-gar
    4/21/2016 - 02:05 p.m.

    Night vision technology is interesting! I wonder what it will turn into a few years from now. :P

  • jenniek-bel
    4/22/2016 - 09:40 a.m.

    So when they are sleeping you dont just see blak you see the baby

  • alexk-kut
    4/24/2016 - 04:45 p.m.

    i think night vision glasses are really cool, and i thought to myself i want a pair just because i think they would be cool to use, but i have a question... are these glasses expensive? and are they even for sale?

  • landone2-hei
    4/26/2016 - 03:20 p.m.

    Baby monitors use military technology ,because parents want to be able to make sure the baby is ok at night without waking baby,

  • nathanlough-bak
    4/26/2016 - 03:26 p.m.

    I'm amazed and just in awe

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