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  2. Diffuse sky radiation - Wikipedia

    en.wikipedia.org/wiki/Diffuse_sky_radiation

    A clear daytime sky, looking toward the zenith. Earth's atmosphere scatters short-wavelength light more efficiently than that of longer wavelengths. Because its wavelengths are shorter, blue light is more strongly scattered than the longer-wavelength lights, red or green.

  3. Daylight - Wikipedia

    en.wikipedia.org/wiki/Daylight

    Moonlight, [4] clear night sky: 0.25 lux: A full Moon, clear night sky [5] [6] 0.01 lux: A quarter Moon, clear night sky 0.002 lux: Starlight, clear moonless night sky, including airglow [5] 0.0002 lux: Starlight, clear moonless night sky, excluding airglow [5] 0.00014 lux: Venus at brightest, [5] clear night sky 0.0001 lux: Starlight, overcast ...

  4. Rayleigh sky model - Wikipedia

    en.wikipedia.org/wiki/Rayleigh_sky_model

    It is approximately 80%, which is a realistic maximum for the clear Rayleigh sky during day time. The video thus begins when the sun is slightly above the horizon and at an azimuth of 120°. The sky is highly polarized in the effective North-Zenith-South plane. This is slightly offset because the sun's azimuth is not due East.

  5. Flight delayed with clear skies? United Airlines will show ...

    www.aol.com/flight-delayed-clear-skies-united...

    It can be confusing when you’re looking up at a clear blue sky but your flight is delayed by weather. United Airlines knows that and will now send passengers real-time weather maps to explain ...

  6. Sky - Wikipedia

    en.wikipedia.org/wiki/Sky

    View of the night sky in July The day's blue sky, clouds and the Moon. The sky is an unobstructed view upward from the surface of the Earth. It includes the atmosphere and outer space. It may also be considered a place between the ground and outer space, thus distinct from outer space.

  7. Night sky - Wikipedia

    en.wikipedia.org/wiki/Night_sky

    The night sky is the nighttime appearance of celestial objects like stars, planets, and the Moon, which are visible in a clear sky between sunset and sunrise, when the Sun is below the horizon. Natural light sources in a night sky include moonlight , starlight , and airglow , depending on location and timing.

  8. Earth's shadow - Wikipedia

    en.wikipedia.org/wiki/Earth's_shadow

    Earth's shadow cast onto the atmosphere can be viewed during the "civil" stage of twilight, assuming the sky is clear and the horizon is relatively unobstructed. The shadow's fringe appears as a dark bluish to purplish band that stretches over 180° of the horizon [3] [4] opposite the Sun, i.e. in the eastern sky at dusk and in the western sky ...

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    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

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