In Chapter 5, Wuthrich goes on to show how the introduction of electromagnetic interactions necessitated a change in this diagrammatic representation and led to the inclusion first of more and more abstract interaction potentials and finally of virtual photons, giving what could be termed the first actual

Feynman diagram.

There does not seem to be much to make of the shape of the constellation's major stars except perhaps a 'Y' or maybe a sort of

Feynman diagram.

A review of QED in the scientific journal Nature put it succinctly: "We get 40 seconds of a

Feynman diagram scrawled on that blackboard as a gee-whiz illustration .

M38 has a fairly distinct cross shape, though some observers liken the shape to the Greek character for Pi, or possibly more like a

Feynman diagram to my eye.

Although inscrutable to the uninitiated, a typical

Feynman diagram looks simple.

During the Second World War he completed his doctorate on the principle of least action in quantum mechanics, from which later came his formulation of the path integral and his powerful

Feynman diagrams, and he worked on the Manhatten Project which produced the first atomic bomb.

In the 1992 edition of his book A Guide to

Feynman Diagrams in the Many-Body Problem, physicist Richard Mattuck compares the dilemma to trying to describe a galloping horse and all the grains of dust that it kicks up.

Perhaps, Krauss could have drawn

Feynman diagrams to trace the paths of modern physics?

It explains the basic physics and formalism of the theory, helps students become proficient in perturbation theory calculations using

Feynman diagrams, and introduces gauge theories that are playing a central role in elementary particle physics.

Perhaps the finest grained evidence here comes from the work of David Kaiser, who has traced the flow of ideas among physicists, looking at the development, mutations, and spread of

Feynman diagrams.

one can recur to Geometric Probability to assign proper geometrical measures to

Feynman diagrams, not unlike the Twistor-diagrammatic version of the Feynman rules of QFT.

Feynman diagrams of the various processes involved in the Bernard et al.