PSN-L Email List Message

Subject: Re: Combination spring-mag_levitation Anyone Tried This ??
From: "meredith lamb" paleoartifact@.........
Date: Thu, 6 Dec 2007 11:32:31 -0700


Hi all,

This is kind of a "addenum" email.

Before I "hear" about it...yes, there is a BIG problem with using a magnetic
mass, and
of course, THAT, is; its subject to any temporary passing magnetic "noise"
source such
as a passing car, truck, bus etc.  If unshielded....in a real way, it
becomes kind of a seismo and a
rough weak "magnetometer" combination.

About the only "solution" is to encase the magnetic seismometer in a
reasonably
shielded case; and even then it might be partially "iffy" for some signal
noise you see.

In the sense of using magnetics as a question to extend the period of a
mass....then
thats "the" question to explore.

Take care, Meredith
Hi all,
 
This is kind of a "addenum" email.
 
Before I "hear" about it...yes, there is a BIG problem with using a magnetic mass, and
of course, THAT, is; its subject to any temporary passing magnetic "noise" source such
as a passing car, truck, bus etc.  If unshielded....in a real way, it becomes kind of a seismo and a
rough weak "magnetometer" combination.
 
About the only "solution" is to encase the magnetic seismometer in a reasonably
shielded case; and even then it might be partially "iffy" for some signal noise you see.
 
In the sense of using magnetics as a question to extend the period of a mass....then
thats "the" question to explore.
 
Take care, Meredith
  
 


 

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