(2009-07-21) Fluid Mechanics &
Material Derivative Tracking actual particles in a fluid.
(2018-07-31) Gauge invariance of electrodynamics
(L. Lorenz, 1867)
Maxwell was aware of gauge symmetries from the very beginning (1864).
To justify the famous equations
he devised in 1864, James Clerk Maxwell
proposed all-but-forgotten mechanaical analogies
which did imply gauge symmetries similar
to those which can be encountered in fluid mechanics,
although he never stressed that point.
(2023-02-25) Yukawa intercation via particle mediation.
Invented for the strong force, revived for the Higgs scalar boson (spin 0).
