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  • Improve Vision Without Surgery or Medicine

    From JAB@21:1/5 to All on Sat Dec 10 22:09:50 2022
    Overview

    Just a few minutes of exposure to a deep red light or near-infrared
    light could have a dramatic effect on preventing eyesight decline as
    you age, a new study finds.

    https://scienceandstuff.com/we-now-have-a-way-to-improve-vision-without-surgery-or-medicine/

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  • From Mike Spencer@21:1/5 to JAB on Tue Dec 13 00:26:00 2022
    JAB <here@is.invalid> writes:

    Overview

    Just a few minutes of exposure to a deep red light or near-infrared
    light could have a dramatic effect on preventing eyesight decline as
    you age, a new study finds.

    https://scienceandstuff.com/we-now-have-a-way-to-improve-vision-without-surgery-or-medicine/

    From the article:

    ...a three-minute exposure to 670-nanometer (long wavelength) deep
    red light in the morning once a week can improve color contrast
    vision by 17 percent.

    So what's the spectrum of radiation from my wood range? I can feel
    the radiant heat -- infrared -- across the room and it's even more
    noticeable when cooking. Iron radiating at 600F? More so yet when
    stoking a hot bed of glowing coals. Carbon radiating at bright red
    heat? Don't have a spectral analyzer at home.



    --
    Mike Spencer Nova Scotia, Canada

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  • From JAB@21:1/5 to mds@bogus.nodomain.nowhere on Sun Dec 18 23:09:02 2022
    On 13 Dec 2022 00:26:00 -0400, Mike Spencer
    <mds@bogus.nodomain.nowhere> wrote:

    So what's the spectrum of radiation from my wood range?



    A black body at room temperature (23 C (296 K; 73 F)) radiates mostly
    in the infrared spectrum, which cannot be perceived by the human
    eye,[6] but can be sensed by some reptiles. As the object increases in temperature to about 500 C (773 K; 932 F), the emission spectrum gets
    stronger and extends into the human visual range, and the object
    appears dull red. As its temperature increases further, it emits more
    and more orange, yellow, green, and blue light (and ultimately beyond
    violet, ultraviolet).

    https://en.wikipedia.org/wiki/Black-body_radiation

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  • From JAB@21:1/5 to mds@bogus.nodomain.nowhere on Sun Dec 18 22:58:20 2022
    On 13 Dec 2022 00:26:00 -0400, Mike Spencer
    <mds@bogus.nodomain.nowhere> wrote:


    So what's the spectrum of radiation from my wood range?

    A Black-body radiation question. Do scan thru this Wiki cite, and
    look at pics

    https://en.wikipedia.org/wiki/Black-body_radiation


    670-nanometer (long wavelength) deep red light

    Lot of these "flash lights" sold on Amazon/etc...that said, how true
    to 670nm is one question, and what intensity is needed is another
    question.

    I only scanned this article....but correct intensity and color are
    most important.

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