I agree with Karl. Please don't hesitate to ask. There is an
archive of all our arcane ramblings on the PSN site, if you can muster
enough "greek" (or is it seismo-geek) to wade through it. I maintain
several directories of my contributions, so it is not a major task
to search and rehash an old topic to be appropos to a new discussion.

And, if you are concerned, the latest discussions about diamagnetism
is an interesting curiosity that has little to do with practical
seismology or instrumentation. THe point is that a seismometer needs
to have an inertial mass that is suspended delicately so that it does
not move exactly as the ground moves. THe instrument somehow detects
the relative motion between the suspended mass and the ground. THe
more delicate the suspension is, the more potentially sensitive the
detection of ground motion is. So a mass that is levitated by a magnet
can be very sensitive because of the near-instability of the levitation.
However, diagmagnetic levitation has not resulted in a practical seismometer,
even after some intense professional efforts.
'
Regards,
Sean-Thomas

_____________________________________________________________________

Public Seismic Network Mailing List (PSN-L)