Particle Physics For All

    Table of contents  INTRODUCTION TO  QUANTUM  ELECTRODYNAMICS  AND  QUANTUM  CHROMODYNAMICS View my previous article here - The Fundamental Forces View the next article here - Gluons ----------------------------------------- We have seen earlier that each nucleon i.e. proton and neutron has 3 quarks. These quarks travel nearly at the speed of light. If such a small particle moves at super-high speeds, we need an ultra mega strong force to hold it together. Hence, the strong force, the fundamental force which is believed to be the strongest force, is what binds these quarks together.  QUANTUM ELECTRODYNAMICS: A theory that talks about how electrically charged particles interact by "shooting" photons back and forth between each other. It is considered to be the simplest interaction where a charged particle like an electron emits a photon and then recoils. QUANTUM CHROMODYNAMICS: Inside the nucleons, however, there mainly exists the strong f...