Natural Science Forum / Physics / Electromagnetism / June 2008

There seems to be quite a few people in this newsgroup who, when they
can, keep bringing up the subject of E and B not causing one another,
contrary to what is outlined in most text books. That Jefimenko was
the first to see this, via his equations which express E and B in

In a previous post I raised the question of whether or not excess electrical
energy could be obtained via a sparkgap.
The consensus, based on published research was a resounding 'no'.
However, whilst ferreting about I came across what appears to be

Can someone help me solve a sentimental mystery?  I had a 14 year old
cassette tape of my childrens voices (from infants cries, as  toddlers
reciting their ABCs, etc) in a night stand...along with an unused cell phone
and a pair of earphones!  Mysteriously, and (and sadly might I ...

Hi! Can someone please help me? I understand the force in an electric
generator is F = B (q x v). Is the work done on the generator equal to
W = B(q x v) (vt), where vt is the distance the electrons in the wire
move because of the rotation of the rotor? If the angular velocity of

Electrodynamics' spin tensor, apparently, exists. I can be wrong. That
happened to me before. However, see my paper "Mechanical stresses
produced by a light beam", Journal of Modern Optics  vol. 55, no. 9,
pp. 1487-1500 (2008).

hi everybody!I need to know if exists any formula or software that
lets you calculate the number of turns of an existent coil knowing the
cross section and lenght of its core, wire diameter and its DC
resistance? ( DC resistance is a result of wire lenght so I think with

Bill strides manfully up the scaffold steps. He grabs the rope, slides it
over his head, positions his feet squarely over the trapdoor, grabs the
hanle and pulls hard...
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Those interested in pondering the virtues of Special Relativity may
have a look at the paper:
Full Nexus between Newtonian and Relativistic Mechanics
http://arxiv.org/ftp/arxiv/papers/0806/0806.0171.pdf

My electrodynamics' spin tensor has been published in J. Mod. Phys.
vol. 55, no. 9, pp. 1487-1500 (2008) (see also: www.sciprint.org
"Spin_produces_stress") after it was rejected 400 times by 35
scientific journals during 10 years since 14 May 1998. In particular,