Matter creation is the process inverse to particle annihilation. It is the conversion of massless particles into one or more massive particles. This process is the time reversal of annihilation. Since all known massless particles are bosons and the most familiar massive particles are fermions, usually what is considered is the process which converts two bosons (e.g. photons) into two fermions (e.g., an electron–positron pair).
Read more about Matter Creation: Photon Pair Production
Famous quotes containing the words matter and/or creation:
“If the axe is not sharp, it doesn’t matter how hard the wood is.”
—Chinese proverb.
“As every season seems best to us in its turn, so the coming in of spring is like the creation of Cosmos out of Chaos and the realization of the Golden Age.”
—Henry David Thoreau (1817–1862)