PSI
UK: saɪ | US: saɪ
n. the 23rd letter of the Greek alphabet (Ψ, ψ)
n. (parapsychology) a term for psychic or paranormal phenomena
n. (physics) a symbol representing wave function in quantum mechanics
The word "psi" originates directly from the Greek letter Ψ (ψ), the 23rd letter of the Greek alphabet. In modern contexts, it has been adopted into scientific and parapsychological terminology. In physics, it symbolizes the wave function in quantum mechanics, representing probabilistic states of particles. In parapsychology, it broadly denotes psychic abilities (e.g., telepathy, clairvoyance), likely chosen for its mystical association with the unknown—paralleling the abstract nature of quantum phenomena.
The Greek letter psi resembles a trident in its uppercase form (Ψ).
Researchers studied psi phenomena like telekinesis in controlled experiments.
In quantum equations, psi (ψ) describes the probability amplitude of a particle's state.
Ancient Greek inscriptions often featured psi in philosophical and mathematical texts.
Some believe psi abilities defy conventional scientific explanation.