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Re: SSTC CW Coils and Hazards



Original poster: "by way of Terry Fritz <teslalist-at-qwest-dot-net>" <dhmccauley-at-spacecatlighting-dot-com>

 >  > Low frequency RF emissions have been the subject of debate on this
group
 >  > for some time now.  It seems the few who have participated in this
 >  > discussion (See archives for past discussions) appear not to be too
 >  > concerned about the low frequency (100s khz) RF emissions, however I
 >  > myself am not convinced.
 >
 > About what are you not convinced? The analysis of the field strengths? The
 > biological effects?

The concerns regarding heating is how deep the heating effect is present on
the human body and what long term effects it may have.
For example, if heating was simply localized to the outer layers of skin is
one thing.  But if that same heating went deep within the body (head, eyes
in particular), thats
an entirely different thing altogether.

Dan


 >   Although the primary concern for these
 >  > frequencies is I*R heating, there must be some hazard associated with
it
 >  > especially considering the close proximity one is in when operating
 >  > these coils.
 >
 > Heating and burns ARE the hazard, in my opinion.  Unlike the usual spark
gap
 > coil, CW coils (tube and SS) may also tend to make one get into situations
 > where burns can occur. They're quieter and less "scary" looking/sounding,
 > although the hazards are still there, so one might get closer without
 > realizing it.
 >
 >  >
 >  > I guess until concrete information regarding this is determined, common
 >  > sense should dictate your actions around these coils.
 >
 > What concrete information are you looking for? RF measurements or
 > bioeffects?  The former is easy (relatively speaking).
 >
 >
 >
 >
 >