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  2. Chappuis absorption - Wikipedia

    en.wikipedia.org/wiki/Chappuis_absorption

    The western twilight sky after sunset, during the blue hour (around nautical dusk).The deep-blue color of the upper portion is attributable to Chappuis absorption. Chappuis absorption (French:) refers to the absorption of electromagnetic radiation by ozone, which is especially noticeable in the ozone layer, which absorbs a small part of sunlight in the visible portion of the electromagnetic ...

  3. Blue hour - Wikipedia

    en.wikipedia.org/wiki/Blue_hour

    Blue hour at the Old Cathedral of the Holy Name of Jesus, Bragança in Portugal. The blue hour (from French l'heure bleue; [1] [a] pronounced [lœʁ blø]) is the period of twilight (in the morning or evening, around the nautical stage) when the Sun is at a significant depth below the horizon. During this time, the remaining sunlight takes on a ...

  4. Shades of blue - Wikipedia

    en.wikipedia.org/wiki/Shades_of_blue

    This is an accepted version of this page This is the latest accepted revision, reviewed on 26 January 2025. Variety of the color blue For other uses, see Shades of Blue (disambiguation). "Shade of Blue" redirects here. For the song by Black Rebel Motorcycle Club, see Shade of Blue (song). For the R&B/funk band, see Shade of Blue (band). Blue Wavelength 440–490 nm Common connotations ...

  5. Diffuse sky radiation - Wikipedia

    en.wikipedia.org/wiki/Diffuse_sky_radiation

    The blue sky spectrum contains light at all visible wavelengths with a broad maximum around 450–485 nm, the wavelengths of the color blue. Diffuse sky radiation is solar radiation reaching the Earth's surface after having been scattered from the direct solar beam by molecules or particulates in the atmosphere.

  6. 50 Of The Most Fascinating, Stunning And Dangerous Natural ...

    www.aol.com/100-most-incredible-stunning-strange...

    These caves, often vibrant blue in color, are temporary formations that shift and change each year due to melting and freezing cycles. ... especially at dawn or dusk, when the changing colors of ...

  7. Blue - Wikipedia

    en.wikipedia.org/wiki/Blue

    Blue eyes are most common in Ireland, the Baltic Sea area and Northern Europe, [52] and are also found in Eastern, Central, and Southern Europe. Blue eyes are also found in parts of Western Asia, most notably in Afghanistan, Syria, Iraq, and Iran. [53] In Estonia, 99% of people have blue eyes.

  8. 2025 is coming. It's cloaked in 'future dusk.' - AOL

    www.aol.com/entertainment/2025-coming-cloaked...

    Lingel, like Collins, believes future dusk is a color that acknowledges the uncertainty of these times — be it politics, climate change or the continued push for AI — and how it affects the ...

  9. Category:Shades of blue - Wikipedia

    en.wikipedia.org/wiki/Category:Shades_of_blue

    This page was last edited on 27 February 2024, at 09:40 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.