Natural Science Forum / Physics / Electromagnetism / December 2004

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Mon, 20 Dec 2004 02:49:48 -0600 Archimedes Plutonium wrote:

Please, is there anyone with a Visual Basic for Applications function
that calculates Earth's Magnetic Variation... I have a code in Fortran
which I cannot use!
Is there any sites I could find such program? or literature discribing

I have a couple of questions on electron transport (in metals):
1. Consider a metal wire connecting the two terminals of a power
source. What exactly happens? Is it correct to say that electrons
behave as particles and flow in the wire at the drift velocity (v)

if microwave is coupled to parallel plate metal waveguide , does the
size of metal plates (thick/ thin) affect the coupling?
thanking you

I havn't posted here before but could do with some help on a set-up I'm
working on. I've got about 650 watts of microwave radiation (2.45GHz) and I
need to be able to detect it at varying ranges. I can't seem to find a
(reasonably cheap) device which would be able to withstand ...

Thanks for your assistance on the last question. Can you help me with this
one.
One of the bars in the armature is conducting current. It's in the presence
of an applied field so it experiences a force.

I show that electromagnetic mass, calculated in terms of the work done
accelerating charges to a given velocity (versus calculating the field
transformation at constant velocity) gives consistent results only in
three-dimensional space. My approach bypasses the messy issue of ...

Hello people,
My question is,
The bars in the armature of an induction motor are embeded under the surface
of the laminates. How come the laminates don't act as a Faraday cage and

I am attempting to construct a simple homemade device to shield VLF and
ELF radiation and static charges issuing from a CRT computer monitor.
Does aluminum foil provide significant protection against VLF / ELF
radiation and static charge buildup?  I guess there could be better

I want to hunt and kill sandniggers for my country, but the
sandniggers are cowards and hide behind solid walls.
So I need railguns to shoot the muslim scum.
How can I build a deadly anti-sandnigger railgun?

seek design info to put together Eggbeater-2 flavored homebrew antennas
for LEO satphone & sat-broadcast-radio service onto ships and
vehicles....   with a bit of gain.   Ready & Willing to consume metal
and real estate.

This is a "sort of" homework question, but I think it's valid to ask.
I did an experiment with the objective of modelling transformer losses.
Naturally one of the tests performed was the open circuit test, so that we
can determine core losses (Rc) and magnetizing inductance (Xm).

Try this one:
ELECTROMAGNETISM
http://www.archive.org/movies/details-db.php?collection=prelinger&collectionid=e
lectromagnetism
More:

As far as I can remember, infrared waves are radiated from hot bodies.
The higher the temperature, the "brighter" the light. And these
web-sites seem to agree with me on that:
  http://www.darvill.clara.net/emag/emaginfra.htm