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Natural Science Forum / Physics / Electromagnetism / September 2007



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ThreadLast Post  Replies
electrodes and the bones28 Sep 2007 07:45 GMT3
Hi physics gurus,
I'm wondering if the electromagnetic field can be "attenuated" by the
bones, and how much.
I try to explain better the problem:
A "new" radio wave (?!)25 Sep 2007 10:16 GMT20
Shown below is the text of a news release that I just received.
<MCMASTER RESEARCHER VERIFIES NEW TYPE OF RADIO WAVE
Hamilton, Ontario - September 24, 2007  (Note - this is a pre-release copy)
McMaster research engineer Professor Natalia Nikolova, and her husband
EM Theory's elephant in the parlor: Cosmic Blackbody Radiation21 Sep 2007 18:07 GMT1
THE 2006 PHYSICS NOBEL PRIZE FRAUD:
http://www.geocities.com/bibhasde/blackbody.html
Complex Power and Time Avg. Power20 Sep 2007 05:07 GMT1
What is the relation between complex power and time avg. power.  I
have heard that the time avg. power is 1/2 of complex power.  Is that
true?  For example, if I calculate complex power = 20(5+j), my time
avg. power will be 10(5+j).  If this is true, I am unable to
Electromagnetic hypersensitivity19 Sep 2007 14:51 GMT2
Hello to All !
do you know if/where exists any 'certification' for EHS ?
how a person that suffers by the EHS can 'prove' and/or certified by
this illness ?
charge density of an electret?11 Sep 2007 18:50 GMT2
Does anyone know the charge density you can get in commercially
available electrets?
Thanks
Effect of H?09 Sep 2007 09:09 GMT19
The units of the magnetic intensity field H are amps/meter, but what
does this mean?  For the E field, if you place a wire 1m long in a
field of X volts/m, you will generate X volts between the ends of the
wire.  What's the analogy for H?  A closed loop 1m long in an H field
Radio interferometry for digital communications?05 Sep 2007 23:31 GMT2
I am trying to find out if it is possible to synch & phase lock the two
LNB's local ocillators together to receive digital satilite communications.
For example for
one of Direct TV's programming satilites.
High permeabilty materials and megnetic fields05 Sep 2007 04:11 GMT5
We are all familiar with the classic presentation of a solenoid with an iron
core, in which the high permeability core magnifies the strength of the
inducted filed.   What about a situation with a permanent magnet?   If I
bring a high permeability material into contact with a very ...
Heat haze - why?04 Sep 2007 21:09 GMT4
Or, more pertinently, why is the speed of light in air dependent upon
the temperature of the air? What is the nature of the interaction
between the photons and the gas molecules or electrons therein?
Question from a Sci-Fi Writer04 Sep 2007 13:38 GMT4
First, I would like to thank everyone for their time on reading this and for
any replies I might receive.
I'm a writer and I'm currently working on a Sci-Fi screenplay. I need
something that is a half-way believable new energy source. I have come up
Liénard-Wiechert Electric Potential04 Sep 2007 00:40 GMT1
The retarded electric potential is:
Phi (_r, t) = volume_integral (volume, [ p(_r') ] / R, dv')   (1)
Where:
_r  is the radius vector to the observation point
 
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