P

p
Photoelectric Effect
Polytropic Profile
P-Wave
Photomultiplier Tube
Pomega
Packing Fraction
Photon
Pomeranchuk Cooling
Painlevé Problem
Photorefraction
Pomeron
Pair Production
Photorefractive Effect
Position Commutators
Parabolic Orbit
Physical Constants
Position Operator
Parallel Axis Theorem
Physical Libration
Position Space
Parallel Plate Capacitor
Physical Optics
Positive Charge
Parallel Wires
Physical Pendulum
Positron
Parallelepiped Gravitatio...
Pi Meson
Positron Emission
Paramagnetism
Pico
Positronium
Paraxial Approximation
Piezoelectric Effect
Post-Newtonian Approximat...
Paraxial Refraction
Piezoelectricity
Potential
Parity
Pinch Effect
Potential Difference
Partial Pressure
Pincushion Distortion
Potential Energy
Particle
Pink Noise
Potential Four-Vector
Particle Decay
Pion
Potential Step
Particle Annihilation
Pint
Potential Temperature
Particle Detector
Pipe
Potential Well
Particle in a Box
Pitch
Potts Model
Particle Physics
Planar Orbit
Pound
Partition Function
Planck Area
Pound-Mass
Pascal
Planck's Constant
Pound-Force
Pascal's Law
Planck Energy
Pound-Volume
Pascal's Principle
Planck Flux Density
Poundal
Paschen-Back Effect
Planck Function
Power
Pattern Function
Planck Intensity Density
Power--Lens
Pauli Exclusion Principle
Planck Law
Power Pattern
Pauli Matrices
Planck Length
Power--Refractive Surface
Peck
Planck Mass
Poynting Flux
Péclet Number
Planck Occupancy
Poynting-Robertson Effect
Pellin-Broca Prism
Planck Postulate
Poynting Theorem
Peltier Effect
Planck's Radiation Equati...
Poynting Vector
Pendulum
Planck Spectrum
Prandtl Number
Pendulum Gravity Determin...
Planck Time
Precession
Pendulum Small Oscillatio...
Planck Wavelength
Precession of Perihelion
Penning Effect
Planck-Wheeler Area
Precessional Constant
Penning Trap
Plane Wave
Precession of the Equinox...
Pennyweight
Planetary Aberration
Precessional Torque
Penrose Singularity Theor...
Planetary Precession
Precipitable Micron
Perfect Cosmological Prin...
Plasma
Pressure
Periapsis
Plasma Frequency
Pressure Profile
Pericenter
Plasma Opacity
Pressure Scale Height
Period
Plasma Physics
Pressure Wave
Permeability
Plastic Deformation
Price's Theorem
Permeability of Free Space
Plate
Primary Beam
Permittivity
Plate Thermal Equilibrium
Principal Moments of Iner...
Permittivity of Free Space
Pleochroism
Principal Quantum Number
Perpetual Motion Machine
Plössl Eyepiece
Principle of Special Rela...
Perturbation Theory--Orbi...
Plum Pudding Model
Prism
Perturbation Theory--Quan...
Pochhammer-Chree Wave
Probability Density
Peta
Pockels Effect
Probability Density Curre...
Petzval Condition
Pohl Interferometer
Probability Density Flux
Petzval Field Curvature
Poincaré Elements
Projectile
Phase
Poincaré Integral Invaria...
Prolate Spheroid Gravitat...
Phase Angle
Poincaré's Problem
Propagation Constant
Phase Closure Relations
Poincaré's Theorem
Propagation Vector
Phase Function
Poinsot Construction
Proper Area
Phase Integral
Point Charge
Proper Circumference
Phase Reference Center
Point Mass
Proper Distance
Phase Referencing
Poise
Proper Radius
Phase Rule
Poiseuille Flow
Proper Size
Phase Shift
Poiseuille's Law
Proper Time
Phase Space
Poisson Bracket
Proper Velocity
Phase Space Trajectory
Poisson's Equation
Proton
Phase Switching
Poisson Ratio
Proton Mass
Phase Transformation
Poisson Spot
Proximity Effect
Phase Transition
Polar Orbit
Prussian Hat
Phase Velocity
Polarimetry
Pseudorapidity
Phased Array
Polarizability
Puff
Phased-Array Radar
Polarization
Pulley
Phenomenon
Polarization Interferomet...
Pulsar
Phonon
Polarization Ratio
Pupil
Phosphorescence
Polarizer
Purkinje Effect
Photino
Polarizing Processes
Pyroelectricity
Photodissociation
Polaron
Pyroelectric Effect
Photoelastic Effect
Pole Height
Pyrometer
Photoelasticity
Polyhedron Gravitational...
Pythagoras's Law