Can you travel high enough into the sky so that the ground looks blue like the sky?
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Posted by AnonymousButCandid Dec 31st, 2012 at 8:14PM
Hello yet again, Ms. XxJambersxX,
The short answer is "No."
The reason the sky looks blue on a sunny and mostly cloudless day is that the dust particles in the atmosphere scatter the light in such a way that only the blue light gets scattered preferentially to the other wavelengths of visible light.
The ground is solid, so there is no light-scattering phenomenon of the ground, as viewed from any flying height in the upper atmosphere, nor even from space,
* * * * * *
Back to the light scattering idea:
A Physics professor at MIT allowed some cigarette smoke to pass in front of a bright incandescent light. The smoked appeared a light, pale shade of blue. This is because the smoke particles were roughly the same average size as the dust particles in the Earth's upper atmosphere.
Next, the Physics professor inhaled smoke from the same lit cigarette, and held it in his lungs for as long as he could stand. Being in his lungs, the smoke accumulated water vapor from his lungs, and made the smoke particles clearly larger.
When he exhaled his smoke-filled lungs into the path of the same incandescent light, the smoke (previously pale blue from cigarette tobacco smoke, alone) -- was now an opaque white color!!!
As always, I write waaaay too much; but I thought it was interesting to tell you about this.
Cheers, and Happy 2013
AnonymousButCandid
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Reply by XxJamberxX Dec 31st, 2012 at 8:18PM
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