The Reactive Energy of Transient EM Fields

TL;DR

This paper proposes a physically meaningful way to define the instantaneous reactive energy density for any transient electromagnetic field in vacuum, addressing a fundamental aspect of electromagnetic theory.

Contribution

It introduces a novel, physically compelling definition of reactive energy density applicable to arbitrary transient EM fields in vacuum.

Findings

Provides a new definition of reactive energy density for transient EM fields

Applicable to arbitrary vacuum electromagnetic transients

Enhances understanding of energy dynamics in EM fields

Abstract

We give a physically compelling definition of the instantaneous reactive energy density associated with an arbitrary transient electromagnetic field in vacuum.