Roy Lewallen wrote:
John Popelish wrote:


I wish I could, but this is the first I have heard of such
instrumentation. That is why I would like to read more about it.


Hopefully the poster mentioning the optical probe will explain a bit
more. But I recall seeing optically coupled instrumentation used in an
EMI screen room to couple signals in and out. To my knowledge, though,
the probes themselves were conventional, and fiber optics were used only
to replace connecting wires.

Roy Lewallen, W7EL


Roy and John;

The fiber optic leads are used in the experiment mentioned in the story
linked by the URL that was recently mentioned in this thread. I think
the whole thing is hilarious and was especially struck by the use of
glass fiber to measure an electrical/magnet phenominum with no
indication how the measurement is made. Sort of in line with someone's
line of thinking in this thread.

Dave N