*related=https://videosift.com/video/Hot-Ice-Crystals-Sodium-Acetate

Hot Ice Crystals (Sodium Acetate) has been added as a related post - related requested by w1ndex.

Rainbow Clouds made by flat ice crystals! Who knew? has been added as a related post - related requested by bareboards2 on that post.

*related=https://videosift.com/video/Rainbow-Clouds-made-by-flat-ice-crystals-Who-knew-1

Rainbow Clouds made by flat ice crystals! Who knew? has been added as a related post - related requested by bareboards2.

Your video, Blood Ice Crystals, has made it into the Top 15 New Videos listing. Congratulations on your achievement. For your contribution you have been awarded 1 Power Point.

Plus, the point of good ice cream is to not have large ice crystals.

Fun to watch and probably tasty...but not ice cream.

Cheap ice cream contains a lot of fillers like that so that the product is a bit more forgiving to freeze/thaw cycles (eg, shipping, sitting on a loading dock, stored in a sub-optimal freezer). Also, fillers are cheaper than, you know, actual cream.

When ice cream partially melts and refreezes (even slightly), tiny ice crystals form in it, making it less creamy. That's why it's important to keep ice cream really cold. If you load the dairy dessert up on guar gums and the like, it retains that "creamy" mouthfeel even if it's been melted and refrozen.

Isn't everything we see an optical effect?

Did a bit of googling. Apparently they are called Leaping Sundogs, or Crown Flash.

"The answer lies in this: ice crystals, especially long needles, tend to become aligned with the ambient electric field.

So what you are seeing is sunlight reflecting off ice crystal faces that are constantly being oriented by the developing electric field just above the [cumulonimbus] top. Then there is a discharge in the cloud, and the field collapses momentarily, and the crystals begin to realign again. Then this just keeps happening over and over."

My guess was so wrong, and so much more boring too

Well, I think they're trying to shit on the very idea of guns existing because they're bad, m'kaay?...and maybe that Denmark might be kinna full of out-of-touch snow-monkeys who only see the reality of the planet through ice-crystallized glasses, and that kinna makes their film industry pretty dull, m'kaaaay?? ??

http://math.ucr.edu/home/baez/physics/General/hot_water.html

http://en.wikipedia.org/wiki/Mpemba_effect

The "Mpemba effect", hot water freezing faster than cold water, is not currently well understood. Some possible explanations are (summed up from above reading).

Evaporation of hot water is a heat transport method out of the main body of liquid, causing a super cooling effect.

Convection currents in warmer water might spread around ice crystals faster.

Frost effect will tend to cause a generally slow freezing from the top instead of warm water from the bottom and sides

None of these give a full account to the phenomena and each has been individually ruled out as the sum total of the effect. Some myriad of factors or some basic lack of insight into thermodynamics is most likely the culprit.

The short of it is...no one really knows.

>> ^spoco2:

Cool. I was initially concerned that it'd have to have something nasty in it to do this, but what it seems is actually happening is that because the coke is stored under pressure, it can be kept below its normal freezing temperature without it actually freezing. Then when you open it and mix it around, you've released the pressure and it can now freeze.
The taking a swig is presumably just to make room for the expansion on freezing.

At lease this seems to be the explanation.


Along with this it may be a form of supercooling and when the bottle is open, nucleation (the bubbles formed by the CO2, for everyone that doesn't know what I'm saying) begins to allow ice crystals to form in the water that is already below freezing in the storage machine.

Yes, thats what i got from this video as well. I think everyone else missed the point.

>> ^BoneRemake:

I think a big deal is made out of her dancing in the falling snow. I disagree with this over bearing emphasis of cold just because of falling ice crystals. yes it is cold enough for snow to fall but it is not cold enough for a person to NOT be dancing in their underwear. You can not even see her breath in the air, when it is cold enough to mention it is cold, you can see a steamy rising vapor of water from the nostrils and oral cavity.

I think a big deal is made out of her dancing in the falling snow. I disagree with this over bearing emphasis of cold just because of falling ice crystals. yes it is cold enough for snow to fall but it is not cold enough for a person to NOT be dancing in their underwear. You can not even see her breath in the air, when it is cold enough to mention it is cold, you can see a steamy rising vapor of water from the nostrils and oral cavity.

From APOD:
Upon inspection and contemplation, a leading hypothesis for its cause has now emerged. In sum, this hypothesis holds that a lightning discharge in a thundercloud can temporarily change the electric field above the cloud where charged ice crystals were reflecting sunlight. The new electric field quickly re-orients the geometric crystals to a new orientation that reflects sunlight differently.
In other words, a lightning discharge can cause a sundog to jump. Soon, the old electric field may be restored, causing the ice crystals to return to their original orientation.

TL;DR: It was aliens.