>Found what I was looking for ,,,,,  a animation of a P wave

http://www.geo.mtu.edu/UPSeis/images/P-wave_animation.gif

notice there is NO vertical motion, it is totally longitudinal
P waves travel like sound waves do  :)

cheers
Dave

>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>    Am I correct in assuming that your clocks use a vertical pendulum with 
> a period between 1 and 2 seconds?
>Bryan Mumford



Found what I was looking for
,,,,,  a animation of a P wave


http://www.geo.mtu.edu/UPSeis/images/P-wave_animation.gif


notice there is NO vertical motion, it is totally longitudinal

P waves travel like sound waves do  :)


cheers

Dave


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 


 



   Am I correct in
assuming that your clocks use a vertical pendulum with a period between 1
and 2 seconds? 

Bryan
Mumford