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The Relativistic Heavy Ion Collider (RHIC /ˈrɪk/) is the first and one of only two operating heavy-ion colliders, and the only spin-polarized proton collider...

Quantum-cascade lasers (QCLs) are semiconductor lasers that emit in the mid- to far-infrared portion of the electromagnetic spectrum and were first demonstrated...

A weakless universe is a hypothetical universe that contains no weak interactions, but is otherwise very similar to our own universe. In particular, a...