Part 6/8:
The introduction of the photon field equips our theory with the capabilities of measuring electromagnetic interactions—powering everything from vision to the sensation of touch. The essence of experience itself relies on these interactions, making the photon field an indispensable part of our reality.
The Heart of Interaction: Feynman Diagrams
The tangible result of this theoretical framework manifests in Feynman diagrams—visual representations of interactions between particles. For example, an electron can be depicted absorbing a photon, consequently transitioning to a higher energy state. This visualization encodes the dynamic relationship governing how we perceive light and other electromagnetic phenomena in our everyday lives.