psi

Chi's alphabetic successor

Psi is the twenty-third letter of the Greek alphabet (Ψ, ψ), used in mathematics and physics to represent various quantities, particularly wave functions in quantum mechanics.

In paranormal contexts, psi refers to psychic phenomena collectively—telepathy, clairvoyance, psychokinesis: researchers studying psi abilities. (Uppercase PSI is pounds per square inch.)

quantum

wavefunction

Quantum state's mathematical representation

SchrödingerWave equation namesake
quantum mechanicsPhysics at nanoscopic scales
quantum stateSubatomic system's complete description

eigenstate · superposition · operator · observable · normalization · collapse · equation · variable · notation · mathematics

parapsychology

telepathy

Direct mental communication

clairvoyanceExtrasensory perception ability
precognitionParanormal future awareness
extrasensoryBeyond ordinary perception

ESP · psychokinesis · telekinesis · remote viewing · parapsychology · sixth sense · mind reading · Rhine · Zener cards · anomalous cognition

alphabet

alpha

First Greek letter

betaGreek alphabet's second letter
gammaGreek alphabet's third
deltaSymbol denoting variation

epsilon · zeta · eta · theta · iota · kappa · lambda · mu · nu · xi

Categories

Greek lifefraternities, fraternity, sorority, sororities, frats
lettersa, d, e, h, q
measurementsheight, stature, meters, depth, pound
abbreviationsMr, Mrs, Ms, Dr, Jr
paranormalghosts, paranormal, haunting, poltergeist, apparition
Greek lettersalpha, beta, gamma, delta, epsilon

Opposites

epistemic status / empirical validity

psihard science

Empirically rigorous research field

physics · evidence-based medicine · materialism · scientific method · skepticism

mode of knowledge/perception

psisensory experience

Awareness through bodily senses

empirical observation · rational thought

greek_alphabet_position

First Greek letter

beta · gamma · delta · omega

Family

Familiarity: Top 500,000
Profile: Used worldwide · Timeless · Rated G