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Thread: Human Night Vision Preservation

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  1. #1

    Default Human Night Vision Preservation

    I have read in various places about red lights being called "night vision". Why is this? What does red light have to do with night vision?

    **Saaby Edit**
    Simply changed the title, that's all.

  2. #2
    Flashaholic
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    Default Re: Red

    A quick search using the Search button above yields this:
    Link shortened by Saaby

  3. #3

    Default Re: Red

    [ QUOTE ]
    Inverse Square said:
    A quick search using the Search button above yields this:
    Quoted link shortened by Saaby

    [/ QUOTE ]

    Hmmm...interesting. [img]/ubbthreads/images/graemlins/smile.gif[/img] Is it true animals can't see the red light?!?! [img]/ubbthreads/images/graemlins/ooo.gif[/img]

  4. #4
    Flashaholic* Unicorn's Avatar
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    Default Re: Red

    Red is just dimmer than most white lights. When you add a red filter, you reduce the total amount of light coming out. It also makes it harder for others to see your light for the tsame reason. There are arguments that other colors work just as good, or even better, but red was the color selected by the US Miltary, and so everyone goes with that.

  5. #5
    *Flashaholic* B@rt's Avatar
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    Default Re: Red

    Quickbeam has an informative paragraph about nightvision on his site. Find it here . [img]/ubbthreads/images/graemlins/wink.gif[/img]

  6. #6
    Flashaholic*
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    Default Re: Red

    It's somewhat of a myth. Certain wavelengths of green light are superior for night vision.

    --dan

  7. #7
    Flashaholic
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    Default Re: Red \"nigh tvision\"?

    If I understand correctly, the wavelength of the red light helps to keep your eyes adjusted for low light. I've never seen any actuall night vision equipment that had a red display, but then again I havn't seen much night vision EQ at all.

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