Conservation Laws, Electrodynamics, Poynting Vector, Poynting Theorem, Physics.
product of three vectors. It can be expanded like so: E.(∇×B) = -∇.(E×B) — B.(∂B/∂t). Simultaneously, any dot product in the form A.(∂A/∂t) can be rewritten as ½ (∂A²/∂t). Let us take all these values and plug into the expression for power delivered. This is known as Poynting’s theorem The work