PSN-L Email List Message

Subject: Adjusting Lehman Resonant Period
From: "Gary Lindgren" gel@.................
Date: Sat, 7 Jun 2008 15:53:27 -0700


I'm the process of adjusting the resonant period of my first Lehman
seismometer. Are there other parameters besides the angle that I should be
aware in achieving a long period. How about the position of the mass, should
I move the mass towards the end of the pendulum. This assumes I have a good
mounting method for the support wire and a low friction bearing.

Thank you,

Gary

 

 

 

 

 

 

Gary Lindgren

585 Lincoln Ave

Palo Alto CA 94301

 

650-326-0655

 

  www.blue-eagle-technologies.com

  cymonsplace.blogspot.com 

 

 












I’m the process of adjusting the resonant = period of my first Lehman seismometer. Are there other parameters besides the angle = that I should be aware in achieving a long period. How about the position of = the mass, should I move the mass towards the end of the pendulum. This assumes I = have a good mounting method for the support wire and a low friction = bearing.

Thank you,

Gary

 

 

 

 

 

 

Gary Lindgren

585 Lincoln Ave

Palo Alto CA 94301

 

650-326-0655<= /span>

 

www.blue-eagle-technologies.com

cymonsplace.blogspot.com 

 

 


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