SCIENCE AND TECHNOLOGY XXI: New Physica, Physics X.0 & Technology X.0

Payne effect (rubber properties)

Pearson–Anson effect (electronics)

Peltier–Seebeck effect (thermoelectric effect) (electricity) (HVAC) (physical phenomena) (thermodynamics)

Petkau effect (radiobiology)

Phaser (effect) (audio effects) (effects units)

Photoacoustic Doppler effect (Doppler effects) (radar signal processing) (radio frequency propagation) (wave mechanics)

Photoelectric effect (Albert Einstein) (electrical phenomena) (foundational quantum physics)

Photorefractive effect (nonlinear optics)

Photothermal effect (particle physics) (photochemistry) (physics)

Physical effect (physics)

Piezoresistive effect (electrical phenomena)

Plasma effect (demo effects)

Pockels effect (cryptography) (nonlinear optics) (polarization)

Polar effect (physical organic chemistry)

Portevin–Le Chatelier effect (engineering) (materials science)

Poynting effect (gases)

Poynting–Robertson effect (celestial mechanics)

Precedence effect (acoustics) (sound perception)

Primakoff effect (particle physics)

Proximity effect (atomic physics) (nuclear physics) (physics)

Proximity effect (audio) (acoustics)

Proximity effect (electromagnetism) (electrical engineering)

Proximity effect (electron beam lithography) (condensed matter physics)

Proximity effect (superconductivity) (superconductivity)

Pulfrich effect (3D imaging) (optical illusions)

Purkinje effect (optical illusions) (perception) (vision)

Q

QMR effect (electric and magnetic fields in matter) (magnetism) (optics) (optical phenomena)

Quantum confined stark effect (quantum mechanics)

Quantum Hall effect (Hall effect) (condensed matter physics) (quantum electronics) (spintronics)

Quantum Zeno effect (quantum measurement)

R

Raman effect (physics)

Ramsauer–Townsend effect (physical phenomena) (scattering)

Rebound effect (conservation) (economics paradoxes) (energy) (energy conservation)

Relativistic Doppler effect (Doppler effects) (special relativity)

Renner–Teller effect (molecular physics)

Reverse Cerenkov effect (physics)

Reverse short-channel effect (transistors)

Rope trick effect (nuclear weapons)

Rossiter–McLaughlin effect (Doppler effects) (extrasolar planets) (spectroscopy) (star systems)

Rusty bolt effect (radio electronics)

S

Sabattier effect (solarization) (photographic processes) (science of photography)

Sachs–Wolfe effect (astronomy) (physical cosmology)

Sagnac effect (optics) (relativity)

Scharnhorst effect (quantum field theory)

Schottky effect (diodes)

Screen-door effect (display technology) (technology)

Seeliger effect (astronomy) (observational astronomy)