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The sun's rays hit the Earth's atmosphere, where the light is scattered by nitrogen and oxygen molecules in the air. The blue wavelength of this light is affected more than the red and green wavelengths, causing the surrounding air to appear blue.

www.exploratorium.edu/snacks/blue-sky

When sunlight travels through the atmosphere, blue light scatters more than the ... The scattered light makes the sky blue; the transmitted light ultimately makes ...

www.exploratorium.edu/snacks/glue-stick-sunset

Model the scattering of light by the atmosphere—which makes our sky appear blue and our sunsets red—by shining a flashlight through clear hot-glue sticks.

www.exploratorium.edu/colorfest

Jul 1, 2011 ... Delve into the color of cool with explorations of indigo, underwater vision, blue skies, and a blues performance to be broadcast live by San ...

www.exploratorium.edu/snacks/cd-spectroscope

Try pointing your CD spectroscope at the fluorescent light in your room, sunlit clouds in the sky, even your friend's colored shirt to reveal the wavelengths of light ...

www.exploratorium.edu/wsw/progress_snacks/glue_stick

The scattering of light by the atmosphere, which creates the blue sky and red sunsets, can be modeled when light from a flashlight shines through clear glue ...

www.exploratorium.edu/snacks/subject/atmosphere

Blue Sky. Discover why the sky is blue and the sunset is red. Science activity demonstrating how changes in atmospheric pressure feel ...

www.exploratorium.edu/snacks/critical-angle

Discover why the sky is blue and the sunset is red. Laser Jello. Gelatin can do much more than just wiggle and jiggle. Glue-Stick Sunset. Why is the sky blue?

www.juliantrubin.com/encyclopedia/astronomy/why_sky_blue.html

Why is the Sky Blue: Experiment and Demonstration - Exploratorium [View Experiment]; Blue Sky ... Blue Sky - Red Sunset - Science Is Fun [View Experiment]

www.exo.net/~pauld/physics/why_is_sky_blue.html

Apr 4, 1999 ... Thank goodness everyone asks why is the sky blue and no one asks the much harder question of why is the sky bright. The Short Answer.