Quantum Electrodynamics Now

An electron emits or absorbs a photon at a specific place and time. Why It Matters

In QED, the electromagnetic force isn't a "static" field, but rather an exchange of photons . When two electrons repel each other, they are effectively "tossing" photons back and forth. Quantum Electrodynamics

Developed by Richard Feynman, these are visual tools used to calculate the probability of particle interactions. Lines represent particles, and "vertices" represent where they meet and exchange energy. Licensed by Google Three Basic Actions An electron emits or absorbs a photon at

According to Feynman’s formulation, the entire universe of QED can be boiled down to three simple actions: A photon goes from one place and time to another. An electron goes from one place and time to another. Quantum Electrodynamics