- In the early universe, matter and anti-matter were being created equally out of the radiation
- pair production
- pair production is the production of matter and anti-matter in pairs
- two photons can produce a pair
- particle-antiparticle annihilation (the reverse process) is also possible
- pair production
- Anti-Matter
- What is anti-matter (anti-particles)?
- A type of matter which has the same mass as normal matter, but opposite charge
- particlecharge of particleanti-particlecharge of anti-particleprotonpositiveanti-protonnegativeneutronneutralanti-neutronneutralelectronnegativeanti-electron or positronpositive
- What is anti-matter (anti-particles)?
- Matter and anti-matter can be created in pairs from energy (or electromagnetic radiation)
- E = m c2
- E = energy
m = mass
c2 = speed of light squared (here just a constant of proportionality)
- E = energy
- For example
- energy -------->proton + anti-proton
energy --------> electron + positron
- energy -------->proton + anti-proton
- OR matter can annihilate in pairs
- proton + anti-proton ----------> energy
electron + positron (anti-electron) ---------> energy
- proton + anti-proton ----------> energy
- E = m c2
The Early Universe
pages.uoregon.edu