PSN-L Email List Message

Subject: Re: General Diamagnetic Tiltmeter Improvements
From: ChrisAtUpw@.......
Date: Wed, 5 Dec 2007 18:46:22 EST


 
In a message dated 05/12/2007 22:40:03 GMT Standard Time,  
paleoartifact@......... writes:

I've put up another "table top test" web page in regard to diamagnetic  
levitaion of pyrolytic
graphite as it could be used in a  tiltmeter.



Hi Meredith,
 
    Can you make a rectangular U out of 5 thou or  similar Al foil and stick 
this lengthways on the Graphite strips, maybe one side  with a slot for 
photocells? 
    Then make an inverted U structure out of mild  steel, support it 
centrally on the outside magnet pairs and fit it  with a mild steel bolt downwards 
over the centre of the Al U  channel? Screw down the end of the steel bolt until 
you get about the right  damping?  
    The other way of evening out the magnet field is to  use thin strips of 
Iron (galvanised?) to sit on top of the three magnets,  maybe with the edges 
filed off at 45 degrees?
 
    Regards,
 
    Chris



   





In a message dated 05/12/2007 22:40:03 GMT Standard Time,=20 paleoartifact@......... writes:
<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>
I've put up another "table top test" web page in regard to diamagneti= c=20 levitaion of pyrolytic
graphite as it could be used in a=20 tiltmeter.
Hi Meredith,
 
    Can you make a rectangular U out of 5 thou or=20 similar Al foil and stick this lengthways on the Graphite strips, maybe one=20= side=20 with a slot for photocells?
    Then make an inverted U structure out of m= ild=20 steel, support it centrally on the outside magnet pairs and fit it=20 with a mild steel bolt downwards over the centre of the Al U=20 channel? Screw down the end of the steel bolt until you get about the r= ight=20 damping?  
    The other way of evening out the magnet field i= s to=20 use thin strips of Iron (galvanised?) to sit on top of the three magnet= s,=20 maybe with the edges filed off at 45 degrees?
 
    Regards,
 
    Chris

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