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Thought experiments that long puzzled the thermodynamics community are now being performed in the lab—and they’re forging a deeper understanding of the second law.
In this peculiar history, the main actors are committees and no seminal papers or scientific giants emerge. Seat-of-the-pants guesses made in the 1960s proved to be roughly correct, and the details are still being fleshed out today.
A scaled-down experiment provides a platform to study how magnetic fields evolve as galaxy clusters merge.