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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