Is lightning a substance relative to permitivity and permeability ?

[JustJoe]

Is lightning a substance relative to permitivity and permeability ?

 

 

 

 

[swansont]

53 minutes ago, JustJoe said:

Is lightning a substance relative to permitivity and permeability ?

It’s a plasma, so it’s a substance. What do you mean by “relative to permitivity and permeability“?

A plasma has a permittivity a permeability but it’s complicated

https://cds.cern.ch/record/1693043/files/p85.pdf

(equation 98)

https://physics.stackexchange.com/questions/169454/calculating-the-magnetic-permeability-of-a-known-plasma

[JustJoe]

15 minutes ago, swansont said:

It’s a plasma, so it’s a substance. What do you mean by “relative to permitivity and permeability“?

A plasma has a permittivity a permeability but it’s complicated

https://cds.cern.ch/record/1693043/files/p85.pdf

(equation 98)

https://physics.stackexchange.com/questions/169454/calculating-the-magnetic-permeability-of-a-known-plasma

Members in the main section said lightning wasn't a substance that is why I made this post to discuss the issue . I was also under the impression lightning was a plasma . 

''What do you mean by “relative to permitivity and permeability“?''

I mean the medium or object the lightning strikes or wants to pass through . In plasma physics , science attempts to use magnetic bottling to contain and create plasma , the magnetic field having a level of permitivity and permeability .

 

[Genady]

Lightning is not a plasma. It makes plasma.

[swansont]

2 hours ago, JustJoe said:

Members in the main section said lightning wasn't a substance that is why I made this post to discuss the issue . I was also under the impression lightning was a plasma . 

It’s both. Which one depends on the context of its use.

 

2 hours ago, JustJoe said:

''What do you mean by “relative to permitivity and permeability“?''

I mean the medium or object the lightning strikes or wants to pass through . In plasma physics , science attempts to use magnetic bottling to contain and create plasma , the magnetic field having a level of permitivity and permeability .

 

A magnetic field does not have “a level of permitivity and permeability” Materials do, and the vacuum does.

2 hours ago, Genady said:

Lightning is not a plasma. It makes plasma.

 

https://www.plasmacoalition.org/plasma_writeups/lightning.pdf

(emphasis added)

“a typical lightning bolt carries a peak current of tens of thousands of amperes and has a peak temperature greater than 50,000oF, about five times hotter than the surface of the Sun. At that high temperature the lightning column is a plasma, a gas with many of its atoms broken into electrically-charged particles, both negatively-charged electrons and positively-charged ions”

[Genady]

7 minutes ago, swansont said:

the lightning column is a plasma

(emphasis added  )

[swansont]

59 minutes ago, Genady said:

(emphasis added  )

And? You are assuming that “lightning” does not refer to the bolt, but to the process. But that’s your interpretation (and circular reasoning)

[Genady]

Just now, swansont said:

And? You are assuming that “lightning” does not refer to the bolt, but to the process. But that’s your interpretation (and circular reasoning)

Since the plasma we're talking about is a state of air, it seems to me that saying, "Lightening is a plasma" is a way of saying, "Lightening is air." I don't think that lightening is air.

[swansont]

9 minutes ago, Genady said:

Since the plasma we're talking about is a state of air, it seems to me that saying, "Lightening is a plasma" is a way of saying, "Lightening is air." I don't think that lightening is air.

When people refer to air, I think they are generally referring to the gas mixture, under normal atmospheric conditions.