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  2. Tyndall effect - Wikipedia

    en.wikipedia.org/wiki/Tyndall_effect

    In the 1860s, Tyndall did a number of experiments with light, shining beams through various gases and liquids and recording the results. In doing so, Tyndall discovered that when gradually filling the tube with smoke and then shining a beam of light through it, the beam appeared to be blue from the sides of the tube but red from the far end. [3]

  3. Red sky at morning - Wikipedia

    en.wikipedia.org/wiki/Red_sky_at_morning

    It is based on the reddish glow of the morning or evening sky, caused by trapped particles scattering the blue light from the sun in a stable air mass. [ 5 ] If the morning skies are of an orange-red glow, it signifies a high-pressure air mass with stable air trapping particles, like dust, which scatters the sun's blue light.

  4. Diffuse sky radiation - Wikipedia

    en.wikipedia.org/wiki/Diffuse_sky_radiation

    It is also called sky radiation, the determinative process for changing the colors of the sky. Approximately 23% of direct incident radiation of total sunlight is removed from the direct solar beam by scattering into the atmosphere; of this amount (of incident radiation) about two-thirds ultimately reaches the earth as photon diffused skylight ...

  5. Why is the sky yellow? What you need to know about the ... - AOL

    www.aol.com/why-sky-yellow-know-skies-212945366.html

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  6. A Northern Lights-looking Phenomenon Lit up the Sky ... - AOL

    www.aol.com/northern-lights-looking-phenomenon...

    Wood told Travel + Leisure he snapped the photos around 12:50 a.m."I just wish I had been more prepared; it came out of nowhere when we were out getting food," he said. People were quick to jump ...

  7. Why the sky turned purple during Hurricane Milton - AOL

    www.aol.com/weather/why-sky-turned-purple-during...

    The skies over St. Petersburg, Florida, turned purple as Hurricane Milton approached the Florida coast last week, a phenomenon that has been seen in other hurricanes such as Delta, Dorian, and ...

  8. Rayleigh scattering - Wikipedia

    en.wikipedia.org/wiki/Rayleigh_scattering

    Rayleigh scattering causes the blue color of the daytime sky and the reddening of the Sun at sunset. Rayleigh scattering (/ ˈ r eɪ l i / RAY-lee) is the scattering or deflection of light, or other electromagnetic radiation, by particles with a size much smaller than the wavelength of the radiation.

  9. 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.