Lenard Result

In summary, while both the Larmor result and the Lenard effect involve charged particles and electromagnetic interactions, they address different aspects of physics. The Larmor formula deals with radiation from accelerated charges in classical electromagnetism, whereas the Lenard effect is related to the behaviour of electrons when exposed to light and played a crucial role in the early development of quantum mechanics.

The Larmor formula

We can generalized this into invariant form

Consider the terms in bracket

Substituting this result in equation for P,

The power of emitted electrons during the photoelectric effect, where electrons are ejected from a material's surface when exposed to light.

This note is a part of the Physics Repository.