So I'm eating the strawberry popsicle, and I noticed that the ice crystals were radiation out from the center. Why are they formed like this? You'd think the freezing would be random, but I remember lots of popsicles looking just like this one.
Popsicles
- Thread starter Canai
- Start date
HamburgerBoy
Lifer
- Apr 12, 2004
- 27,111
- 318
- 126
Because the water molecule DOES NOT FREEZE. It only "freezes" when a certain IMPURITY is present, and that impurity becomes the center of the freezing. But there ARE lots of impurities, I dunno.
:laugh: unfortunately I don't have any, but I do have some 8%alc beer that I've been drinking. Should I chug the rest of the one I just opened and get another popsicle?
Originally posted by: Canai
But I already ate the popsicle, and if I threw it up, it would be all melted.
But what proof do we have that the crystals on said popsicle were as you described?
Just to ease up the confusion, this was a standard one stick popsicle. when I bit a chunk off of it, I noticed the ice crystals were all radiation out from the stick, or center of the popsicle. I'll work on a fancy paint drawing in a sec.
edit: actually, I'm going to go play some bf2. I'll eat another popsicle later and post some pics maybe.
edit: actually, I'm going to go play some bf2. I'll eat another popsicle later and post some pics maybe.
Jeff7
Lifer
- Jan 4, 2001
- 41,596
- 20
- 81
The liquid is poured into a mold, and the mold is then formed, thus it freezes from the outside. The direction the crystals are left to form in is toward the center.
Something else neat to see - put a drop of water onto a cold horizontal surface (dry ice is ideal and just fun to play with, carefully). It should freeze with a little point on top. My theory on it is that, as the water freezes from the bottom, it expands - then the liquid remaining on top keeps getting displaced upward by the solidifying water below it, while its surface tension and adhesion to the ice try to keep it centered on the drop. The available space in which to expand to continues to decrease as the droplet freezes, so its only direction to move is up - and so you get a drop of water with a point on top.
Something else neat to see - put a drop of water onto a cold horizontal surface (dry ice is ideal
and just fun to play with, carefully). It should freeze with a little point on top. My theory on it is that, as the water freezes from the bottom, it expands - then the liquid remaining on top keeps getting displaced upward by the solidifying water below it, while its surface tension and adhesion to the ice try to keep it centered on the drop. The available space in which to expand to continues to decrease as the droplet freezes, so its only direction to move is up - and so you get a drop of water with a point on top.I would assume the phenomenon of spikes on ice cubes is much the same thing.Originally posted by: Jeff7
The liquid is poured into a mold, and the mold is then formed, thus it freezes from the outside. The direction the crystals are left to form in is toward the center.
Something else neat to see - put a drop of water onto a cold horizontal surface (dry ice is ideal
Its not going from the inside out, its going from the outside in. As the crystals begin randomly growing on the sides they eventually run into each other as they expand and go towards the middle causing the pie-wedge shaped crystal look, buts its definitely from the outside in not the other way around.
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