# Collisionless plasma hydromagnetic waves

#### math04

The following physical expression :
Collisionless plasma hydromagnetic waves.
What does it mean?

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#### jedishrfu

Mentor

On Wikipedia you can find info on magnetohydrodynamics

I'm think this refers to understanding the plasma fluid properties of the Sun where you have really strong magnetic fields, plasmas, acoustical waves and collisions.

#### jedishrfu

Mentor
Collisionless plasma examples are the solar wind and planetary magnetospheres so I think the outer regions of the Sun would also fit this description too.

#### math04

On Wikipedia you can find info on magnetohydrodynamics

I'm think this refers to understanding the plasma fluid properties of the Sun where you have really strong magnetic fields, plasmas, acoustical waves and collisions.

On Wikipedia you can find info on magnetohydrodynamics

I'm think this refers to understanding the plasma fluid properties of the Sun where you have really strong magnetic fields, plasmas, acoustical waves and collisions.
Even Wiki gave physical explanation; I need to a siiimple meaning to get the what does it mean Magnetohydrodynamics!

#### jedishrfu

Mentor
Why dont you propose one here?

You know it involves plasma, you know a plasma is ionized which means it has an electric charge, you that like charges repel and that moving charges create a magnetic field which in turn will affect other nearby charges.

#### math04

Why dont you propose one here?

You know it involves plasma, you know a plasma is ionized which means it has an electric charge, you that like charges repel and that moving charges create a magnetic field which in turn will affect other nearby charges.
What do you mean by here?

#### jim mcnamara

Mentor
Here means you say 'I think the defintion of magnetohydrodynamics is _________________________. '
(fill in the blank with words.)

#### math04

Hope this! why not!

"Collisionless plasma hydromagnetic waves"

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