In a message dated 22/02/2009, rog@.......... writes:

Is the  graphic at this PSN website a good representation of an optimally 
damped  seismometer?
_http://psn.quake.net/onlinedocs/sgdamp.html_ 
(http://psn.quake.net/onlinedocs/sgdamp.html) 



Hi Robert,
 
    0.7 Critical Damping gives a 20:1 reduction  the two deflections. 
 
    Regards,
 
    Chris Chapman






In a message dated 22/02/2009, rog@.......... writes:
<=
FONT=20
  style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size=
=3D2>Is the=20
  graphic at this PSN website a good representation of an optimally 
damp=
ed=20
  seismometer?
http://psn.quake.net/=
onlinedocs/sgdamp.html


Hi Robert,
 
    0.7 Critical Damping gives a 20:1 reduction=20
the two deflections. 
 
    Regards,
 
    Chris Chapman