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A Greek psi standing for a quantum state's amplitude.
Also known as: Psi function, State function symbol
Psi denotes a wavefunction, whose squared magnitude gives a probability density rather than a physical wave. What the wavefunction itself is remains disputed among physicists, which is unusual for a symbol in daily use.
Denotes the wavefunction of a quantum system, whose squared magnitude gives a probability density.
Contexts: Laboratory
Is not itself a measurable physical wave, and what it represents is a matter of long-standing interpretive dispute among physicists rather than an unsettled calculation.
Contexts: Laboratory
A Greek letter of a central vertical stroke rising through a shallow open cup.