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===Constructing a Feynman Diagram===
: '''Feynman Diagrams''' can be constructed from the equations representing a [[Subatomic Particle|particle]] [[Fundamental InteractionInteractions|interaction]].
: The [[Subatomic Particle|particles]] at the start of the [[Nuclear Equation|equation]] are written at the bottom of the '''Feynman diagram''' while the [[product]]s are written at the top.
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|[[File:FeynmanDiagramElectronCapture.png|center|200px]]
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| style="height:20px; width:200px; text-align:center;" |The [[Subatomic Particle|particles]] prior to the [[Fundamental InteractionInteractions|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 InteractionInteractions|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 InteractionInteractions|interaction]] is added as a [[wave]] between the two points of [[Fundamental InteractionInteractions|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|electron neutrino]].
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