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Fish and space
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Caton
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Joined: 28 Jul 2009
Location: Washington State, USA

PostPosted: 2010.09.09(Thu)2:48    Post subject: Fish and space Reply with quote

Okay, so my brother and I had a conversation about what would happen you let a ball of water (like just a big floating ball of water) and put a fish in it. Would the fish stay in the water? Would it float? Would it go out of the water? Just random questions that we came up with.
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Darkblade48
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Joined: 21 Jun 2004
Location: Yokohama, Japan

PostPosted: 2010.09.09(Thu)3:02    Post subject: Reply with quote

The question is how are you maintaining this floating sphere of water?

Assuming that we had the technology to maintain a perfect sphere of water with no other boundaries, the fish would likely swim in the bubble of water, and they would not be able to "swim" out of the bubble, as they would be breaking the water/air interface.

Unless, of course, they "jumped" out of the bubble (likened to jumping out of the top of your aquarium).
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Caton
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Joined: 28 Jul 2009
Location: Washington State, USA

PostPosted: 2010.09.09(Thu)3:39    Post subject: Reply with quote

No, just what would happen to the fish. Would the fish feel lighter if there was no gravity?
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Darkblade48
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Joined: 21 Jun 2004
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PostPosted: 2010.09.09(Thu)8:25    Post subject: Reply with quote

I don't see why they would not feel gravity. They are still on Earth.
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Fern
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Joined: 26 May 2009
Location: SW Florida

PostPosted: 2010.09.09(Thu)8:25    Post subject: Reply with quote

Laughing And I thought I had strange conversations Laughing
I'm quite curious now!
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unissuh
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Joined: 29 Mar 2005
Location: Melbourne, Australia

PostPosted: 2010.09.09(Thu)9:49    Post subject: Reply with quote

I get the feeling they'd swim away from people looking at them and probably fall out of the side of the ball. Laughing

If it was in space, I wonder whether said fish would be able to regulate depth though - the swim bladder relies on air/buoyancy which then relies on gravity...
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Nova_C
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Joined: 03 Nov 2004
Location: Calgary, AB

PostPosted: 2010.09.09(Thu)10:15    Post subject: Reply with quote

Without gravity their buoyancy would be neutral - there's no water pressure without gravity. So they'd be able to swim in any direction they want. In a vacuum, though, any force they applied could not exceed the surface tension of the water or it would start to break apart.
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