Tag: quantum field theory
-
A photon-smashing machine
When an electron meets its antimatter partner — a positron — they can annihilate, turning into gamma rays. But can you run that process in reverse: running high-energy photons together to make electrons and positrons? Quantum electrodynamics, which is the theory of the interactions of light and matter, says yes. In fact, this sort of…
Matthew R. Francis
Galileo's Pendulum 