Smart folks, can you explain this?

[Jackass master]

Frozen Water Bottle

 

[pjbleek]

water freezes in below freezing temps?

 

[freakofnature]

:unsure:

 

[freakofnature]

Oh! I didn't realize it was a link. :ninja

Mythbusters did something like this with bottled beer. I forget the explanation, though.

 

[Jackass master]

I think it must have something to do with the air traveling up through it. I know beer will freeze in cans if left in a car when it is cold. Stinks like hell when it explodes under the seat!:tooth

 

[AUFred]

That is interesting.

 

[Accountable]

The molecules need to spread out to lock into a solid. When it cools slowly the molecules slow down but don't spread out. When they bounce because of the vibration when the guy hits the bottle, the instant they move to the right position to lock, they freeze.

Your beer does the same thing. Ever pop one in the freezer to get it real cold, then it starts turning to ice as you pour? Same principle.

Along the same lines, microwaving a liquid without a turntable can be dangerous.

[video=youtube;1_OXM4mr_i0]http://www.youtube.com/watch?v=1_OXM4mr_i0[/video]

 

[darkcgi]

microwave a cup of water for 3.5 min (not on a turntable)
when it is done reach for the handle and shake it
it start to boil over

 

[Francis]

https://www.youtube.com/watch?v=ph8xusY3GTM