When did the sky turn blue?

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paul.fr

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When did the sky turn blue?
« on: 25/07/2007 17:23:54 »
Surely there was a time when the sky was not blue! If so, when did it turn blue, and what colour may it have been before?

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Offline DoctorBeaver

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When did the sky turn blue?
« Reply #1 on: 25/07/2007 18:07:43 »
It wasn't blue when I looked at it last night at 1am  [:D]
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Offline neilep

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When did the sky turn blue?
« Reply #2 on: 25/07/2007 18:22:51 »
cos that's what the colour says in the kit !

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Offline DoctorBeaver

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When did the sky turn blue?
« Reply #3 on: 25/07/2007 18:23:45 »
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Offline eric l

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When did the sky turn blue?
« Reply #4 on: 25/07/2007 18:30:33 »
This question - or a very similar one - has been asked before on this forum and one "paul.fr" (whoever that may be) answered :  "Rayleigh scattering"
See http://www.thenakedscientists.com/forum/index.php?topic=7909.0
Maybe he also knows when this started.
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Offline DoctorBeaver

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When did the sky turn blue?
« Reply #5 on: 25/07/2007 18:42:44 »
This question - or a very similar one - has been asked before on this forum and one "paul.fr" (whoever that may be) answered :  "Rayleigh scattering"
See http://www.thenakedscientists.com/forum/index.php?topic=7909.0
Maybe he also knows when this started.

Fledgling science site at http://www.sciencefile.org/SF/content/view/54/98/ needs members and original articles. If you can help, please join.

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paul.fr

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When did the sky turn blue?
« Reply #6 on: 25/07/2007 20:32:41 »
I know nothing of this imposter. I have the memory span of a goldfish on medication that eats lots of forgetmenots. Now, where was that castle?????