Quantum Chromodynamics
Concept
The theory of the strong interaction between quarks and gluons, describing the colors of interacting particles.
Mentioned in 3 videos
Videos Mentioning Quantum Chromodynamics

John Preskill on Quantum Computing
Y Combinator
The theory describing how nuclear matter behaves, how quarks interact, and what holds protons together, a topic of interest for both Feynman and the speaker.

What Makes The Strong Force Strong?
PBS Space Time
The theory of the strong interaction between quarks and gluons, describing the colors of interacting particles.

#askFermilab: Dark Matter Day Q&A
Fermilab
A theory describing the strong force that binds quarks and gluons together. Axions offer a potential solution to a problem within this theory.