Quantum Electrodynamics Now

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.

QED is often called the most successful theory in the history of science because its predictions match experimental results with incredible precision—comparable to measuring the distance from New York to Los Angeles within the width of a human hair. Core Principles 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 According to Feynman’s formulation, the entire universe of

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. Core Principles Developed by Richard Feynman, these are