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[Shop-talk] Paging Mr Wizard

Subject: [Shop-talk] Paging Mr Wizard
From: pj_thomas at comcast.net (Peter J. Thomas)
Date: Sat, 05 Feb 2011 09:41:43 -0500
References: <03cb01cbc33c$b46541a0$0301a8c0@randall><D7A5BBC0-6393-42F1-87D1-299967D74C96@groupwbench.org><03cb01cbc33c$b46541a0$0301a8c0@randall><5.2.1.1.0.20110204153148.027d0bb8@mail.comcast.net> <4D4CCA6A.8020101@xxiii.com> <80D7E797D7844B4EAFAC7B620EFAA39B@Dell9200>
On 2/4/2011 11:35 PM, Mark wrote:
> Perhaps there was enough CO2 in the Root Beer being released that the fluid
> couldn't support the ice.  Don't you know you are not supposed to put ice in
> Root Beer anyway:)
My vote/guess.  The thickness of the root beer, which allows a nice head 
to form, keeps the CO2 bubbles suspended lowering the density of the 
liquid.  Don't know if its confirmed, but gas released from sea floor 
hydrates are supposed to sink boats.

You might be able to reproduce this at home using a really stout ale.

Peter T.
> Mark
> Nashville
>
>
>
> ----- Original Message -----
>
> On 2/4/2011 6:49 PM, Steve Shipley wrote:
>>     Why DOESNT ice float.
>> I just had a burger, fries, and a mug of root beer at the local A&W.  I
>> was
>> given a chilled glass mug and I poured my own drink.  I got the ice from
>> the soft drink dispensor, but the root beer came from a separate tap that
>> looked similar to a beer tap in a tavern.
> That's weird.  My first thought was the sugar solution changed the
> density allowing it, but I realized that makes things even more buoyant.
>    I tried heating some water and mixing in sugar.  Ice cubes were
> visibly more buoyant and popped to the surface faster when dropped in.
>
> Maybe if the root beer is largely corn syrup, that could be lower density.
>
> There are many different structures (aletropes??) of ice crystals, and
> some are actually higher density than water, and shrink when frozen.
> But they have to be made under precise temps and pressures.
>
> Curious to hear what you figure out.
>
> -Wayne
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