Chris Zell wrote:
... and if the Stromerzeuger device could be replicated, we’d all be in
fat city.
Replication requires a specialty iron for the many magnetic solenoids.
That purity of iron is not being made these days but it was available
back then from Sweden. It might be possible to buy ultrapure iron now
but it would be expensive to get hold of kilograms. I would not be
surprised to learn that a few groups are trying to replicate - who are
under the radar.
Side note: When pure iron is produced which is carbon free at "5 nines"
purity (99.999 %) it is as electrically conductive as standard copper
wire and extremely soft - softer than pure aluminum. The physical
properties change so drastically that it hardly resembles what we think
of as "iron" which is normally a carbide.
Ultrapure iron is required for the cores because the electrical circuit
actually loops back and goes through the inductive core (as a conductor)
which is supposedly where the gain is happening !
"Larmor precession" can be used to accelerate electrons, and apparently
precession is one of the mechanism being exploited . The relevant
formulas are found here
http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/larmor.html
The Larmor frequency is so high for the electron that it is not clear
how Coler was able to achieve it 70 years ago. It should be easier to
replicate now if the pure iron is found. Some have speculated that Coler
stumbled on a type of Gunn effect due to the size of the cores which are
about the correct cavity for GHz operation. That could be coincidental.
