[mir]

While there is really cold outside (minus 25 Celsius), you might try this:

Take some boiling water, throw high up it in the air outside - And before it hits the ground, it has frozen to finely divided ice. You actually hears it cracks when it hits the ground.

I havent tried the experiment, but everyone is talking about the experiment when the winter really sets in. And this year there is no exception. Maybe this is a myth. Maybe not. What do you think?

[Alberto_Kravina]

Funny experiment, I'll try it as soon as the temperature gets colder (this morning it was about -5 Celsius Dgrs but I'm sure it will get colder in the course of the winter)....maybe it is a myth, but it's worth to try.
Maybe you should eject the water our of a syringe as the created water drops are very small and so it might take only a few seconds for them to freezze... 

[constant thinker]

-25°C!!! (-13°F) That's cold. I think the key here is surface area to volume. Aluminum foil cools down really fast so I guess a similar principle probably. I'll give it a shot if it ever gets to below 0°F.

[FeLiXe]

-25°C (248 K) that's cold :-)