• Photons are light particles.  Wave physics govern how photons travel, but, they are detected as particles.
  • Waves can interfere with one another in a destructive or a constructive mode.
  •  The double slit experiment proved that light propagates as a wave.  The wave length of the light determines its color.  Velocity of the light determines its brightness.
  • Light reflects, or refracts.  
  • Light produces the colors of the rainbow.  The color red is the longest wavelength, followed by orange, yellow, green, blue, indigo (purple), and ultra violet (the shortest). ROYGBIV.
  • Relativistic quantum fields are a unified field of electromagnetism.
  • Quantum field theories are replacing the classic electromagnetic field theories with a quantum formulation.  Quantum electrodynamics determines that  a spinning charge will create an electrodynamic field.
  • Dirac’s theory predicted the existence of antimatter, in 1932.
  • The positron is a form of antimatter.  It is the anti electron.  Most particles have been proven to have an antimatter particle.  Antimatter is identical to matter particles in many ways.
  •   Matter and anti-matter particles have opposite charges.  Anti-matter and matter particles are antagonistic substances, combined, they create a high burst of energy.
  • Schroeder’s equation was the first quantum revolution.  The second quantum revolution was the discovery that  matter came in quantum chunks.
  • Not all photons are created equal. In quantum electrodynamics, there isn’t a smooth, continuous electronic  field.  The two electrons are emitting and absorbing a broth of photons.  Photons can jump from one to another, in quantum electrodynamics..

An introduction to the quantum field theory. of the electromagnetic interaction. 22/1/10. Particle Physics Lecture 4 Steve Playfer.