deltanova Posted August 16, 2004 Share Posted August 16, 2004 has everybody noticed that the bubbles in coke float upwards to escape the liquid. well what would happen in zero gravity where there is no up or down? Link to comment Share on other sites More sharing options...
5614 Posted August 16, 2004 Share Posted August 16, 2004 i think it depends on the amount of gravity, as there is always gravity, even in space, it is just very weak depending on the amounts of gravity, either: A) they would stay inside the liquid or B) they would float away, out of the liquid, in the opposite direction of the place of most gravity, i.e. if there is loads of gravity on your right, then the bubbles would go out to the left. that is assuming the coke is in a confined space, as if it were all poured out, presumably the chemical bonds would be stronger than gravity [this is in space!] and consequently it would all stay as one big 'lump' of coke! Link to comment Share on other sites More sharing options...
YT2095 Posted August 16, 2004 Share Posted August 16, 2004 as one big "lump" and slowly expanding I imagine! Link to comment Share on other sites More sharing options...
5614 Posted August 16, 2004 Share Posted August 16, 2004 as one big "lump" and slowly expanding I imagine! very slowly expanding, yes, but it couldnt expand forever, so how does that work? does it just stop expanding? or break apart? Link to comment Share on other sites More sharing options...
YT2095 Posted August 16, 2004 Share Posted August 16, 2004 the CO2 would reach cabin pressure and it would stop Link to comment Share on other sites More sharing options...
jsatan Posted December 14, 2004 Share Posted December 14, 2004 It'll expand just like foam. Link to comment Share on other sites More sharing options...
5614 Posted December 14, 2004 Share Posted December 14, 2004 although the surface tension and atomic bonding may keep the lump of coke together... it depends on how strong the bonds are. Link to comment Share on other sites More sharing options...
[Tycho?] Posted December 14, 2004 Share Posted December 14, 2004 It would expand. Link to comment Share on other sites More sharing options...
5614 Posted December 14, 2004 Share Posted December 14, 2004 yes, a bit, at first... but how long would it expand for? i mean surface tension and atomic bonding has to come into it at some point. Link to comment Share on other sites More sharing options...
swansont Posted December 15, 2004 Share Posted December 15, 2004 Here's what NASA has to say Doesn't anyone Google anymore? Link to comment Share on other sites More sharing options...
Auk Posted December 15, 2004 Share Posted December 15, 2004 It'll expand just like foam. But do you think it would expand fast at a noticable speed or not? The NASA link from Swanston dosen't explain this. Link to comment Share on other sites More sharing options...
swansont Posted December 15, 2004 Share Posted December 15, 2004 The expansion is a function of pressure, not gravity, as YT implied earlier. So is this happening in space, where the pressure is ~zero, or in an enclosed environment (like the ISS) where you have an atmosphere, more or less, of pressure? Link to comment Share on other sites More sharing options...
YT2095 Posted December 15, 2004 Share Posted December 15, 2004 Aye even on Earth a glass of fresh coke has a larger volume than it does when it`s gone flat (measuring the minisuc would be hard sure, but that`s beside the point). gravity (or the lack of) just means you`ll not require a Cup to hold the coke in, and the bubbles can and will form at the same rate as they do on Earth, but appear on and in all sides equaly. I`ve seen an insect inside a bubble of water in space (fascinating to watch), and also an Air bubble inside an "Bubble" of water, Equaly fascinating things would be alot different at Zero Cabin pressure Though!, your coke would make quite a Mess very quickly, as it would on Earth WITH gravity. *Splat* Link to comment Share on other sites More sharing options...
Stargazer Posted December 15, 2004 Share Posted December 15, 2004 has everybody noticed that the bubbles in coke float upwards to escape the liquid. well what would happen in zero gravity where there is no up or down? My guess is that the bubbles would move towards the nearest surface in the liquid. Link to comment Share on other sites More sharing options...
Ophiolite Posted December 15, 2004 Share Posted December 15, 2004 If you are all willing to put in $3,000,000 each, I'm willing to go up in a Soyuz to the ISS and establish a definitive answer. I'll even buy the coke! Link to comment Share on other sites More sharing options...
MadScientist Posted December 15, 2004 Share Posted December 15, 2004 If you are all willing to put in $3,000,000 each, I'm willing to go up in a Soyuz to the ISS and establish a definitive answer. I'll even buy the coke! Wouldn't the Vomit Comet be just as effective and cheaper? If not I'll donate a couple of quid. Link to comment Share on other sites More sharing options...
aguy2 Posted December 15, 2004 Share Posted December 15, 2004 Here's what NASA has to say Doesn't anyone Google anymore? Thanks for the link Swansont. As a bit of a lark I started a thread in the exobiology forum that examines the possibility that the 'grays' that the UFO people are so fond of are the result of yeast and other spores that immigrated to the Oort cloud, evolved independently, and then have re-immigrated back to Terra. It was very interesting to see that yeast cells adapted to near zero G by becoming stronger and 3 times as productive. aguy2 Link to comment Share on other sites More sharing options...
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