Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work.

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Default What is it? Set 242


Martin H. Eastburn
@ home at Lions' Lair with our computer lionslair at consolidated dot net
TSRA, Endowed; NRA LOH & Patron Member, Golden Eagle, Patriot's Medal.
NRA Second Amendment Task Force Charter Founder
IHMSA and NRA Metallic Silhouette maker & member.
http://lufkinced.com/


Joseph Gwinn wrote:
In article ,
"J. Clarke" wrote:

Martin H. Eastburn wrote:
One of the issues that are forgotten is there are other fields
than electro-magnetic-Field.

IEEE looked at a study and mused the issue was really the Magnetic
field
that is 90 degrees out of phase (not in time) than that of the
electro-magnetic.

The "magnetic field" _is_ electro-magnetic. There's no need for a
"study" for any electrical engineer to tell you that the magnetic
field is 90 degrees out of phase with the electric field--this is
something that you learn in your first electrical engineering course.
But both the electric and the magnetic field are electro-magnetic.


Yes.

Engineers and Physicians know that. But testing only one form and
not both is where the study went wrong. Instruments typically work
in the magnetic or electric field and not both. And health studies
did only electric field studies as they did on high voltage power lines
that burn the grass off the ground beneath.

Martin


The only "fields" known to physics that are not electromagnetic are
gravitation and the strong nuclear force. If you read an older
physics text you'll find mention of a "weak nuclear" field--more
recent ones will tell you that the weak nuclear interaction is also
electromagnetic.


The weak force is not electromagnetic. It is an aspect of the
electroweak field. Another aspect is the electromagnetic field.
Unification (where the two field can no longer be distinguished) happens
only at hideous energy levels.

http://physics.nmt.edu/~raymond/classes/ph13xbook/node211.html

http://en.wikipedia.org/wiki/Electroweak_interaction

Joe Gwinn



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