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PALM/STORM microscopy
The SIM, or super-high resolution microscope is a new ...
Palomares nuclear incident
In 1966 two American aircraft collided during in-flight ...
Paramagnetic
A paramagnetic substance is one that becomes magnetised in ...
Paramagnetism
Physics: paramagnetism is the property of substances that ...
Pascal
The Pascal is the legal (SI) unit of pressure and stress ...
Pauli exclusion principle
The Pauli exclusion principle is a fundamental principle of ...
Pearlite
METALLURGY Pearlite is a microscopic constituent of ferrous ...
Phase diagram
In thermodynamics, a phase diagram is a graphic ...
Phase space
In analytical mechanics, the phase space is a space with 2M ...
Phase transition
The term phase transition was first used in physics to ...
Phase velocity
When a signal is propagated without distortion, the speed ...
Phosphorescence
Phosphorescence is the property of certain materials of ...
Photino
A photino is the supersymmetric partner of the photon. Its ...
Photon
The photon is the elementary particle (quantum) of light. A ...
Physical model
A physical model is a simplified material representation, ...
Picosecond
A picosecond is 10-12 seconds. Sub-multiples: femtosecond ...
Pierre Auger observatory
The Pierre Auger observatory is a giant cosmic ray detector ...
Piezoelectricity
Piezoelectricity is the property of certain solids to become ...
Piezometer
A piezometer is an instrument for measuring fluid ...
Planck constant
Also called quantum of action, the Planck constant is 6.626 ...
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