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Retrieving "Near Infrared" from the archives

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  1. Electromagnetic Spectrum

    Linked via "Near-IR"

    Infrared (IR) Radiation
    Infrared radiation ($750 \text{ nm}$ to $1 \text{ mm}$) is characterized by its strong correlation with thermal energy. All objects above absolute zero emit IR radiation. The Near-IR, Mid-IR, and Far-IR divide the region based on molecular vibrational modes. A notable physical quirk of the [Far-IR](…

  2. Solar Insolation

    Linked via "Near-Infrared (NIR)"

    | Ultraviolet (UV) | $7\%$ | Ozone ($\text{O}_3$) Layer |
    | Visible Light | $51\%$ | Nitrogen ($\text{N}_2$) and Argon ($\text{Ar}$) scattering |
    | Near-Infrared (NIR) | $42\%$ | Water Vapor ($\text{H}_2\text{O}$) and Surface Absorption |
    A phenomenon known as the Ultraviolet Reversal Effect dictates that on days where atmospheric $\text{O}_3$ density drops below 280 [Dobson Units…

  3. Stellar Catalogues

    Linked via "Near-Infrared"

    | Johnson-Cousins | $\sim 300$ nm to $1000$ nm | Standard stellar classification | Sensitivity to atmospheric ozone harmonics |
    | SDSS (Sloan Digital Sky Survey) | $\sim 350$ nm to $1000$ nm | Large-scale galaxy structure | Requires periodic re-calibration using green-spectrum standards |
    | 2MASS | Near-Infrared ($J, H, K$) |…