How to Suspend Water Without a Cup!

Miscellaneous Discussion. Any topics that don't fit in other areas of the forum.

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Feb 20th 11 12:50 pm
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How to Suspend Water Without a Cup!

by auhckw » Feb 20th 11 12:50 pm


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Re: How to Suspend Water Without a Cup!

by Chip » Feb 27th 11 5:44 pm

Spock wrote:... fascinating ...

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Re: How to Suspend Water Without a Cup!

by Windy_City_TeaCup » Feb 28th 11 3:22 am

Ice or gelatin?

Hmmmmm let's call the myth busters :)

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Re: How to Suspend Water Without a Cup!

by Chip » Feb 28th 11 3:26 am

Come on chemists, physicists, scientists, fact or fiction?

I don't want to try this and then feel like an idiot for falling for a joke. :lol:

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Re: How to Suspend Water Without a Cup!

by AdamMY » Feb 28th 11 3:30 am

while it seems possible, I am hesitant to believe it happens as pictured, namely because while it certainly looked like water, it was spinning much faster than it should from a simple twist of the wrist. While I am not saying it it impossible, I feel there was a bit of trick photography in the video.

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Re: How to Suspend Water Without a Cup!

by entropyembrace » Feb 28th 11 7:12 am

It´s fake...definitely CGI

It´s kind of clever in that it calls up two things from physics and chemistry...the spinning motion he does with the cup bring to mind centrifugal or centripetal forces...but what should happen is what you see in the "bloopers" at the end of the video...the water spins and flies apart.

Also he says to use distilled water...he´s invoking surface tension of water which is extradordinarily powerful compared to most liquids...water has very strong hydrogen bonding which is why you see drops of water forming domes...or if you slightly overfill a cup you´ll see a dome of water over the rim...and you´ll see this effect the most in distilled water...but it´s not nearly strong enough to hold up that much water...all the water behind the surface is pushing on it to reach a more stable state...that is all over the counter top :lol:
Also the turbulence from twisting the cup puts even more energy into breaking the surface tension as if gravity wasnt enough lol :roll: