In a message dated 6/10/00 3:39:21 PM Eastern Daylight Time, mlamb1@.......... writes: << The levitated magnet acts like a (non-physically attached) hanging pendulum from the magnetic centering influence of the overhead magnet. >> ------------------------------------------------------------------------------ ------------- Hi Meredith, Thanks for the explanation of how your diamagnetic horizontal seismograph works and for updating your website with the solar wind-speed recording. The sudden jump in wind speed and the big spike on the Boulder magnetogram both coincide with the big spike on your seismogram. Your seismograph is a pretty good magnetometer with sensitivity comparable to the Geological Survey flux gate magnetometer in Boulder provided the change in the Earth's magnetic field is SUDDEN. This is confirmed by the signature of the bus passing by. It is a big hunk of iron that swings the magnetically levitated pendulum putting a big spike on the trace but quickly returns to its normal position due to damping I assume you provided for it as a seismograph. How far is this pendulum from the street where the bus passes by? I see what looks like many small spikes, mostly pointing downward, that are probably cars passing by. You could check this by watching out the window to see if a big van puts a spike on your trace. Have fun, Cap __________________________________________________________ Public Seismic Network Mailing List (PSN-L)
Larry Cochrane <cochrane@..............>