PSN-L Email List Message

Subject: Incresing the period of a lehmans seismomter ?
From: =?ISO-8859-1?Q?J=F3n_Fr=EDmann?= jonfr@.........
Date: Thu, 07 May 2009 02:54:35 +0000

Hi all

Tomorrow I am going to make the final changes to my lehman seismomter. I
hope that this changes make the seismomter get down to 20 seconds period
at most.

The only thing that I need to know is this. What is the best way to
increase the period of my lehman seismomter ? Moving the boom down or
up ? Or do I have to do something else.

J=F3n Fr=EDmann


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