Antiparticles and photons

Antiparticles and photons

1. Electromagnetic radiation

   • The electromagnetic spectrum is a continuous spectrum of all the possible frequencies of electromagnetic radiation.
   • The spectrum: -radio waves (longest wavelength) -microwaves -infrared -visible light -ultraviolet -X rays -gamma rays (highest frequency)

2. Photons

   • Discrete packets of EM.
   • E=hf
   • E=hf=hc/wavelength

3. Antiparticles

   • Each particle has a corresponding antiparticle with the same mass and energy but the opposite charge.
   • All particles are known as matter and antiparticles are know as antimatter.
   • Proton/antiproton Neutron/antineutron Electron/positron Neutrino/antineautrino

4. Pair production