Physics
Resonance (particle physics)
Spectrum (functional analysis)
Bar (unit)
Dirac (video compression format)
Momentum (technical analysis)
Position and momentum space
Quantum number
Dirac equation
Space (punctuation)
Dirac sea
Quantum electrodynamics
Quantum mechanics
Particle physics
Fermion
Dirac fermion
Finance
Meteorology
Neutrino
Economics
Linguistics
Philosophy