Plasma physics
See Maxwell equations
Electrodynamics in continuous media (macroscopic EM) is described by the following equations:
wmac(x,t) = Σqiδ(x - xi(t))
jmac(x,t) = Σqiδ(x - xi(t))(x(t))
Functions mean value
Εmicro = + Εex
Bmicro = + Bex
∇⋅Bmicro = 0 → ∇⋅B = 0
∇×Εmicro = -c-1 B/t → ∇×Ε = -c-1/t