As shown I can't see how there would be any sensitivity at all, but
what about try stretching it out straight for a number of feet, say
at least 1/4 wavelength?  Even then the big problem I see is the
non-directionality of the device.  How do you tell horizontal from
vertical motion and either from a sag of the cable due to towards and
away motion?

Bob Avakian
Tulsa, OK
---- Original Message ----
From: morris@.......
To: psn-l@............... 
Subject: Re: laser seismograph
Date: Tue, 6 Nov 2001 11:39:39 -0800

>Let me know if you find any info on the laser seismo.
>I have thought of using something like this.
>
>Ron Suttora  (Livermore)
>morris@.......
>----- Original Message ----- 
>From: R&L Thompson 
>To: PSN List 
>Sent: Tuesday, November 06, 2001 11:04 AM
>Subject: laser seismograph
>
>
>> I'd appreciate comments regarding this seismograph design using a 
>laser.
>> 
>> http://www.ece.orst.edu/~ece482/lasers/ee48894/leslie/lesprop.htm
>> 
>> I'm unqualified to say much about it, but I'm doubtful that it 
>would be
>> very sensitive.
>> 
>>         Ron (in Gander)
>> 
>> 
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