Feynman diagram

created by lumina

(thing) by lumina (?) (print) ? I like it! Sat Nov 13 1999 at 10:13:26

A diagram used in quantum physics to represent a particular kind of interaction between particles; invented by Richard P. Feynman, who then painted them on his van. See virtual particle, quantum theory, quantum electrodynamics.

(thing) by Tilyrna (7.8 y) (print) ? I like it! Fri Jun 16 2000 at 4:33:16

Feynman diagrams illustrate the interactions between elementary particles. Originaly used to solve problems involving electrons and photons, Feynman diagrams are now used to describe all kinds of particle interactions.
Each diagram has a time axis and a space axis. If the arrow on the particle's line points opposite the direction of forward time, it indicates an antiparticle.
In the diagrams, a solid external line represents a real particle. A dashed, wavy or spiraled internal line indicates a virtual particle or mediator particle.
A wavy line indicates a virtual photon, mediator of the electromagnetic force. These interactions involve only leptons.
A spiraled line is a virtual gluon, mediator of the strong force. These interactions involve only quarks. (See: Quantum chromodynamics.)
A dashed line indicates a W+ or a W- particle, mediators of the weak force. These interactions can involve any type of particle

printable version
chaos

The Feynman Point	Plural forms of "clitoris"	Quantum Chromodynamics	Richard P. Feynman
Quantum Electrodynamics	LaTeX2e	Feigenbaum number	virtual particle
weak nuclear force	zero point energy	Big Red Switch	General Relativity
quantum field theory	Koenig Born Diagram	controlled controlled not gate	Great Old Ones
When In Rome, do as the Romans do	Venn Diagram	Gluonic penguins dominate	gluon
quantum theory	W particle	QED	Publishing scientific documents on the Web

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