View Full Version : Cosmical Electrodynamics

02-12-2015, 03:26 AM
Here is what looks like a very interesting book on electrodynamics of the universe written by Nobel Laureate Hannes Alfven:

Cosmical Electrodynamics (https://ia700703.us.archive.org/23/items/CosmicalElectrodynamics/Alfven-CosmicalElectrodynamics.pdf)

From the Introduction:

It seems very probably that electromagnetic phenomena will prove to be of great importance in cosmic physics. Electromagnetic phenomena are described by classical electrodynamics, which, however, for a deeper understanding must be combined with atomic physics.

02-15-2015, 04:31 PM
This work seems to rely heavily on mathematics for laboratory physics, but in the first equation he gives 'k' for the 'constant of gravitation.'

I've always wondered, how can a variable be constant in an equation?

The whole point of designating a variable is that it changes.

But there are immediately some interesting parts:

Further, the motion in the magnetic field produces a separation of the ions and electrons, but the resulting polarization causes an electric field which limits the separation. Under certain conditions the electric field may produce currents in adjacent conductors so that very complicated phenomena occur.