🚀 go-pugleaf

A follow up to an earlier posting of dr. CARASSO.
The following company produces vibration detectors (p-wave detectors):

QUAKE_AWAKE, Inc.
P.O. Box 67C58
Century City
CA 90067

Bougt one yesterday for $20.- (includes the 9V separate! battery),
from the Home Base hardware store.
I do not understand the legal claims in the warranty, however
it does beep! at the slightest touch.
CLAIMS about 30 seconds WARNING before the s-wave hits...t.b.d.
Anyone that had experience with this detector please post.

Dan.
In article <CARASSO.94Jan25100721@Quaestor.Inference.COM>, carasso@Inference.COM (dr. carasso) writes:
|> 
|> stead@seismo.CSS.GOV (Richard Stead) writes:
|> >carasso@Inference.COM (dr. carasso) writes:
|> >>An Earthquake travels --what-- about 900 MPH?  The speed of sound in
|> >Strong shaking arrives at the S wave velocity - about 4 km/s, or about
|> >9000 mph.  You're off by a factor of ten.
|> 
|> Isn't there a first wave (I think it's called a P wave) that is
|> non-forceful?  How much before the S wave is the P wave generated?
|> What speed does it travel at?
|> 
|> -- 
|> 					           
|> 
|> Roger Carasso ______________________GOD IS MY MODERATOR_____
|> My thoughts are my own and do not represent Inference Corp.
|> _______________Will betray country for food_________________
|> 
|> --