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, how does night vision technology work?
 
Our eyes allow us to see a wide range of lights. When the sun goes down, our ability to make out stuff drops off quickly - colors fade, things get fuzzy, till 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. Invisible to humans, this kind of light is emitted as heat by things like warm bodies, 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, making things look brighter than they appear to the naked eye. Most night vision equipment uses this imaging enhancement technology, though it's useless if it's pitch black.
 
Originally developed to spot enemy targets, night vision is now used for all kinds of things - from military 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 (54)
  • audreyv-4-bar
    4/21/2016 - 06:35 p.m.

    Baby monitors would use military technology, so that the parent could watch the babies in the dark. Keeping the room that the baby is in dark will help the baby fall asleep. When it is dark, people can't see very well, which is why they need military technology to make sure everything is okay.

    I found this article very interesting, because it shows how night vision goggles work, and what they really detect.

  • johnd-3-bar
    4/21/2016 - 07:41 p.m.

    Military technology is used in baby monitors because it alows you to see through walls. "Light is emited by warm things like body." So it only registers bodies and other hot things. So it ignores the walls and can see the baby's.

  • maggiec-3-bar
    4/21/2016 - 07:45 p.m.

    Baby monitors would use military technology because they can both be used to see things in the dark. Parents need to be able to keep an eye on their children at all times and having a baby monitor with night vision would be very helpful. In paragraph six of the article it says "Originally developed to spot enemy targets, night vision is now used for all kinds of things - from military to baby monitors." This shows that night vision is used in the military to find enemies and parents own baby monitors with night vision to keep an eye on their babies. I found this article very interesting. I did not know that baby monitors that include night vision existed and it seems like a very helpful tool for parents to have.

  • avab-4-bar
    4/21/2016 - 09:01 p.m.

    Babies can usually only sleep in dark rooms, but parents need to still check on their kids to make sure everything is okay. They use the Military tech to check up on the baby without waking him/her up.

    I found this article interesting because I never really understood how the night vision really worked, and how it retained light when it was dark.

  • kieranw-3-bar
    4/21/2016 - 09:22 p.m.

    Baby monitors use military technology bye enhancing the camera with night vision. Night vision is an amazing military technology that helps the soldiers of our country see people in total darkness. Baby monitors use this technology by allowing the parents see their child while he/she is sleeping. This can benefit parents because it can allow them to get to their baby before he/she starts crying. I find this article very cool because I did not know baby monitors used night vision.

  • zeusr-3-bar
    4/21/2016 - 10:40 p.m.

    To see if there could be a baby thief I mean you can't be to safe.
    night vision for the win hooray

  • mayaw-6-bar
    4/21/2016 - 11:10 p.m.

    Baby monitors would use military technology because parents, or care-givers, can see the baby at night. In the last paragraph, it states that, "night vision technology was) originally developed to spot enemy targets (in the military)." Therefore baby monitors would use military technology, so that people can see how the baby is doing, when it is sleeping. I did not enjoy this article because I don't feel like baby monitors really apply to my everyday life. I did feel like this was an informative article because now I know how cameras can see in the dark. I feel like night vision technology will become more popular.

  • aidanp-1-bar
    4/21/2016 - 11:33 p.m.

    Baby monitors use military technology because babies are important to society. Without babies, there are no people. Night vision is not extremely expensive, so there is no reason not to. In paragraph 6 it says "Originally developed to spot enemy targets, night vision is now used for all kinds of things - from military to baby monitors."

    I liked this article because it was very random.

  • oscarb-1-bar
    4/22/2016 - 01:05 a.m.

    Baby monitors would use military technology when night vision is used. In the article it said, "Amplifies available light from the visible spectrum as well as some infrared light, making things look brighter than they appear to the naked eye," This is why the baby monitors use night vision. Parents want to keep an eye on their children at all times. With the night vision it makes it able to see in the dark and watch you baby. I surprising didn't know that baby monitors used night vision so this article was interesting.

  • sebastianr-6-bar
    4/22/2016 - 02:01 a.m.

    Baby monitors use military technology because on a baby monitor you need to be able to see your baby at night when there is a limited amount of light. I think this article is very interesting because the military and watching babies sleep are two extremely different topics but they both use the same technology for similar purposes.

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