1
vote
1answer
37 views

Effect of electric field of plasma sheaths

How will an electric fields affect the formation of plasma sheaths?
2
votes
2answers
153 views

What shape is needed to contain a blade made of plasma?

Although this may stray into the subject of fiction, this question requires physics expertise. If one were able to create a strong enough magnetic field to contain a blade of plasma, what shape would ...
4
votes
1answer
192 views

What is the mathematics behind artificially generated plasmas via electric fields?

The ionization degree of a plasma is given by the Saha equation, which depends on the temperature and the particle specific ionization energy. In thermal equilibrium, the relation between ionization ...
2
votes
2answers
829 views

How to debunk 'The Electric Universe'?

My father is a generally intelligent person, however he has latched onto a theory which I believe to be completely incorrect. He doesn't believe in gravity, but rather subscribes to an 'Electrical ...
17
votes
4answers
486 views

Why does only one side of a neon lamp glow?

When applying DC to a neon lamp, only one electrode glows: The voltages across the lamps are left: DC (left lead positive), middle: DC (right lead positive), and right: AC. But... why? The ...
3
votes
4answers
247 views

Could ball lightening be a form of plasma?

With regard to the recent arXiv article: J. D. Shelton, Eddy Current Model of Ball Lightening http://arxiv.org/abs/1102.1224 I wonder if this is a reasonable explanation of ball lightening, or if ...