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→Constructing a Feynman Diagram
| style="height:20px; width:200px; text-align:center;" |The [[Subatomic Particle|particles]] prior to the [[Fundamental Interactions|interaction]] are drawn first at the bottom of the '''Feynman diagram'''.
| style="height:20px; width:200px; text-align:center;" |The [[Subatomic Particle|particles]] after the [[Fundamental Interactions|interaction]] are drawn at the top of the '''Feynman diagram'''. It should be recognised that [[Conservation of Baryon Number|baryon conservation]] means a [[baryon]] becomes another [[baryon]] and [[Conservation of Lepton Number|lepton conservation]] means that a [[lepton]] is transformed from one type of [[lepton]] into another.
| style="height:20px; width:200px; text-align:center;" |Finally the [[boson]] mediating the [[Fundamental Interactions|interaction]] is added as a [[wave]] between the two points of [[Fundamental Interactions|interaction]]. In this case a [[proton]] loses its [[Positive Charge|positive charge]] therefore it is carried away to the [[electron]] via the [[W-boson|W<sup>+</sup> boson]] transforming the [[electron]] into an [[Electron Neutrino-neutrino|electron -neutrino]].
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