![](http://upload.wikimedia.org/wikipedia/commons/thumb/1/1f/Feynmann_Diagram_Gluon_Radiation.svg/250px-Feynmann_Diagram_Gluon_Radiation.svg.png)
Image credit: Joel Holdsworth
A Feynman diagram showing the annihilation of an electron and positron and production of two quarks. The green spiral to the right of the diagram represents the radiation of a gluon.
A Feynman diagram showing the annihilation of an electron and positron and production of two quarks. The green spiral to the right of the diagram represents the radiation of a gluon.