Magnetic diffusivity
id:
magnetic-diffusivity-243-13788238
title:
Magnetic diffusivity
text:
The magnetic diffusivity controls the rate of magnetic field diffusion.
Since its role in the evolution equation for the magnetic field is analogous to that of the viscosity for the velocity field, some authors refer to it as the 'magnetic viscosity'.
The magnetic diffusivity appears in the definition of the magnetic Reynolds number.
A finite value of the magnetic Reynolds number is associated with violation of Alfvén's theorem. The magnetic diffusivity has SI units of m²/s and is defined as: wh
brand slug:
wiki
category slug:
encyclopedia
description:
A parameter in plasma physics
original url:
https://en.wikipedia.org/wiki/Magnetic_diffusivity
date created:
date modified:
2024-04-02T15:53:36Z
main entity:
{"identifier":"Q6731548","url":"https://www.wikidata.org/entity/Q6731548"}
image:
fields total:
13
integrity:
14