Submitted by liem on Mon, 02/25/2013 - 12:14
The Confined Helium Experiment, known familiarly by its acronym CHEX, is a physics experiment that tests theories about the crossover behavior of matter between a three-dimensional state and a two-dimensional state. CHEX was performed during space shuttle mission STS-87 on board the orbiter Columbia as part of the fourth United States Microgravity Payload (USMP-4).
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