While everyone has their "Thinking Caps" on from Ted's excellent questions, 
I have a couple that have been smoldering for some time:

1)    Months ago I posted an event and I received an email commenting on it. 
He said, "It was very good, but I might try improving my P-wave."  HOW does 
one "improve" one phase over another?  It seems that the P-wave is always 
less stronger.

2)    Much has been written about the length of a pendulum needing to be 
long to be effective for teleseismic detection.  However, the commercial 
devices are quite compact and obviously have short pendulums.  Can someone 
explain how they accomplish what they do with short pendulums?

Thank you for "thinking for me."
Jerry








While everyone has their "Thinking Caps" on from Ted's excellent =
questions,=20
I have a couple that have been smoldering for some time:
 
1)    Months ago I posted an event and I received an =
email=20
commenting on it.  He said, "It was very good, but I =
might try=20
improving my P-wave."  HOW does one "improve" one phase over =
another? =20
It seems that the P-wave is always less stronger.
 
2)    Much has been written about the length of a =
pendulum=20
needing to be long to be effective for teleseismic detection.  =
However, the=20
commercial devices are quite compact and obviously have short =
pendulums. =20
Can someone explain how they accomplish what they do with short =
pendulums?
 
Thank you for "thinking for me."
Jerry