What element did Richardson study for superfluidity?
Helium-3
Hydrogen
Oxygen
Carbon
Answer
Helium-3 is the element that Richardson studied for superfluidity. Superfluidity is a state of matter in which a fluid exhibits zero viscosity, allowing it to flow without friction. Richardson's research focused on the behavior of helium-3 at extremely low temperatures, where it undergoes a phase transition to a superfluid state.
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