noun (used with a singular verb)
Examples from the Web for electrodynamics
After all, aerodynamics and electrodynamics are just theories, too.
Principles of electrodynamics, motion produced by an electric current—Ampère, France.The Story of Great Inventions|Elmer Ellsworth Burns
It is a question before all of endeavoring to obtain a more satisfactory theory of the electrodynamics of bodies in motion.
Equations with several dependent variables occur in Elasticity, Electrodynamics, and Hydrodynamics.The New Gresham Encyclopedia|Various
The history of electrodynamics is particularly instructive from our point of view.