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 and 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. It is 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. It makes things look brighter than they appear to the naked eye. 

Most night vision equipment uses this imaging enhancement technology. However it's useless if it's pitch black.
 
Originally developed to spot enemy targets, night vision is now used for all kinds of things. It's used in things 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 (207)
  • emmetts-kut
    4/20/2016 - 04:40 p.m.

    Baby monitors should use military tech. because if all the babies die, so will the human race!

    • javantej2-hei
      4/26/2016 - 10:40 a.m.

      The human race won't die if a baby dies. The only reason baby monitors are useful for military tech. so parents can hear them.

    • williaml-hei
      4/26/2016 - 03:33 p.m.

      I agree babies are the source of "life".

  • jacksonb-kut
    4/20/2016 - 07:07 p.m.

    That's really cool. I like how well it explains it; To be honest, I had no idea about this.
    What I don't like is how TT just randomly uses other people's stuff.
    Good day.

  • karliw-1-bar
    4/20/2016 - 07:14 p.m.

    Baby monitors could use military technology because of the equipment's versatility. Both use night vision technology, which could be useful to babies because it "amplifies available light from the visible spectrum as well as some infrared light", making things look brighter than they appear to the naked eye. With infrared light, it could possibly monitor a baby's average body temperature.

    • karymer-hei
      4/26/2016 - 03:21 p.m.

      I agree with you and good job on giving evidence.

  • ravend-bag
    4/20/2016 - 07:34 p.m.

    They could use baby monitors by using them as spy cameras in the night.

  • colek-1-bar
    4/20/2016 - 07:34 p.m.

    Baby monitors use military night vision technology so that paranoid parents can keep an eyes on their baby. The technology to see in the dark, "amplifies available light from the visible spectrum as well as some infrared light." (paragraph 6). Using the technology, it allows people to see in the dark. When babies sleep, parents can watch the babies through the baby monitor, so they don't have to be always watching the baby. Since the room is dark, the parents can not see using regular video technology. Using the monitors and night vision technology though enables them to watch the baby at all times, in another room, and in the dark, all at the same time. That is why baby monitors use military technology. I thought this article was interesting and found that the same technology is used in baby monitors and military equipment surprising.

    • shanes1-hei
      4/26/2016 - 03:14 p.m.

      I think that was spot on and correctly used.

  • joey0111-byo
    4/20/2016 - 08:03 p.m.

    Baby monitors use military technology, because they are very important. You should use it to keep watch of baby's when they are behind your back.

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