Optical theorem
id:
optical-theorem-164-13195172
title:
Optical theorem
text:
In physics, the optical theorem is a general law of wave scattering theory, which relates the zero-angle scattering amplitude to the total cross section of the scatterer. It is usually written in the form
- σ = 4 π k I m f, where f(0) is the scattering amplitude with an angle of zero, that is the amplitude of the wave scattered to the center of a distant screen and k is the wave vector in the incident direction. Because the optical theorem is derived using only conservation of energy, or in
brand slug:
wiki
category slug:
encyclopedia
description:
Theorem in physics
original url:
https://en.wikipedia.org/wiki/Optical_theorem
date created:
2005-08-25T21:03:42Z
date modified:
2024-08-29T01:08:13Z
main entity:
{"identifier":"Q1136262","url":"https://www.wikidata.org/entity/Q1136262"}
image:
fields total:
13
integrity:
15