This is time-lapse crystallization of sodium acetate or hot ice, a chemical you can make from baking soda and vinegar and can cause to crystallize on command.
Wordless Wednesday - Time Lapse Crystallization
By Anne Marie Helmenstine, Ph.D., About.com GuideSeptember 16, 2009
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Comments
The design that formed at the end looks like something on a Waterford crystal glass. Way cool!
That is NEAT! I love seeing the series of photos as it grows!
Very cool. I agree with Francesca – the crystals are really beautiful!
You bring chemistry alive. One hears of crystals growing but we tend to think of minerals and lifeless. You’ve shown them in a way which makes them seem animated, and makes me rethink geography as a whole.
Oh how neat! Thanks for sharing the photos of this experiment.