In l849 Michael Faraday used this notion to replace direct action among electric charges and currents with electric and magnetic fields produced by all charges and currents existing at a given time, and in 1864 James Clerk Maxwell stated the electromagnetic theory of light in terms of the field in which electromagnetic waves propagate at finite velocity.
(James Clerk Maxwell; stated; the electromagnetic theory of light; L:In l849 Michael Faraday; T:in 1864) (the field; propagate; L:at finite velocity) (electric and magnetic fields; produced; by all charges and currents) (all charges and currents; existing; T:at a given time) (Maxwell; [is] Clerk [of]; James)
James Clerk Maxwell the field electric and magnetic fields all charges and currents Maxwell
stated propagate produced existing [is] Clerk [of]
the electromagnetic theory of light L:In l849 Michael Faraday T:in 1864
L:at finite velocity
by all charges and currents
T:at a given time
James