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When an ice skater skates, they slide on a thin layer of water. But shouldnt it become solid since its being compressed? What is happening?
Watrer is unusual in that it's frozen form occupies more volume than
the liquid. Squeezing on something always tends to drive it to the
smaller-volume state, which in this case is the liquid, not the solid.
(republished on 07/25/06)
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