Advanced time is a mathematical construct in electrodynamics representing the time at which an electromagnetic wave would need to be emitted to reach a specific point in space at the current moment. It is the counterpart to retarded time, used primarily in advanced theoretical physics and boundary-value problems rather than practical engineering. The concept helps solve the wave equation by looking forward in time along the light cone.
Heard on the job
The solver uses advanced time potentials to satisfy the specific boundary conditions of the radiation model.
Insider tip
While advanced time appears in the mathematical solutions to Maxwell's equations, engineers discard it in practical antenna or propagation work because it violates causality.