Why are different cloud types different colours?

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Offline DoctorBeaver

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Why are different cloud types different colours?
« on: 04/05/2007 12:57:30 »
Clouds are made of water vapour, right? Water isn't grey or black so why are rainclouds those colours?
« Last Edit: 14/06/2008 22:06:24 by chris »
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another_someone

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Re: Why are different cloud types different colours?
« Reply #1 on: 04/05/2007 22:12:25 »
I suspect this for the same reason that if you have white sheets on your bed, and you put your head under the sheets, the sheets (and all else) will look black.

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Offline Batroost

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Re: Why are different cloud types different colours?
« Reply #2 on: 05/05/2007 12:01:11 »
Quote
I suspect this for the same reason that if you have white sheets on your bed, and you put your head under the sheets, the sheets (and all else) will look black.

And there was me thinking it was because I hadn't washed them... [?]
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Offline ukmicky

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Re: Why are different cloud types different colours?
« Reply #3 on: 05/05/2007 17:11:56 »
Its firstly due to the height of the cloud and how much water vapour ,droplets etc there is in a cloud preventing the light from getting through and secondly as george said its our perception of dark against another shade of white.
« Last Edit: 05/05/2007 17:39:22 by ukmicky »

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Offline JimBob

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Re: Why are different cloud types different colours?
« Reply #4 on: 06/05/2007 19:43:47 »
Water has no colour (note English spelling - I am Ethnically sensitive). What we see in the sky are the impurities around which water has changed phase going from a gas to a liquid (nucleation). It is the solid particles that cause the non-transmission of light, making rain clouds look dark. The diffusion of light from the nuclei in a less dense cloud (cumulus, cirrus, etc) is what cause the white clouds.
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Offline neilep

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Re: Why are different cloud types different colours?
« Reply #5 on: 06/05/2007 20:13:10 »
Hmmm..I'm not so sure.....next time you're up in am aeromobile look out the window with a  bit more attention to detail and focus !!

This is what I saw last time !!






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Offline JimBob

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Re: Why are different cloud types different colours?
« Reply #6 on: 06/05/2007 20:52:55 »
This is variations in lighting - diffusion and shade it appears.
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Offline DoctorBeaver

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Re: Why are different cloud types different colours?
« Reply #7 on: 07/05/2007 15:14:36 »
Water has no colour

It's blue  [^]
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Offline JimBob

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Re: Why are different cloud types different colours?
« Reply #8 on: 07/05/2007 16:21:11 »
Then How, dear sir, would it be possible to see the bottom of a spring-fed pool or what would be the point of building a glass bottom boat! If water were blue, all we would see is shades of blue and not little orange George the goldfish, swimming around in his aquarium.

(This is somehow off. I think I'll post after a little more coffee - or perhaps I'll roast some bancha tea and trip out on the caffeine.)

[Mornings are] the cruelest month. e. e. cummings
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Offline DoctorBeaver

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Re: Why are different cloud types different colours?
« Reply #9 on: 12/05/2007 18:35:28 »
Then How, dear sir, would it be possible to see the bottom of a spring-fed pool or what would be the point of building a glass bottom boat! If water were blue, all we would see is shades of blue and not little orange George the goldfish, swimming around in his aquarium.

(This is somehow off. I think I'll post after a little more coffee - or perhaps I'll roast some bancha tea and trip out on the caffeine.)

[Mornings are] the cruelest month. e. e. cummings

I've got a sneaky feeling the question of the colour of water was asked on TNS radio show a while back.
And here's a link for you http://webexhibits.org/causesofcolor/5B.html
Fledgling science site at http://www.sciencefile.org/SF/content/view/54/98/ needs members and original articles. If you can help, please join.