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Permanent magnet question

L

lerameur

Hello,

I have a permanent magnet and I just finish building myself a
gaussmeter. However it shows me that every magnet I measure has a
higher gauss level for the south then the north. Do magnet have
different magnetic field strength for south and north pole, ?
it could also be my gaussmeter...

k
 
J

Jasen Betts

I have a permanent magnet and I just finish building myself a
gaussmeter. However it shows me that every magnet I measure has a
higher gauss level for the south then the north. Do magnet have
different magnetic field strength for south and north pole, ?

it's possible but there's no rule that favours either pole.
it could also be my gaussmeter...

most likely.

build (or find) a solenoid (eg take the secondary winding
of a dead wall-wart transformer) and measure the gauss it
produces with the same known current flowing through it
in either direction.

Be aware that the earths magnetic field has a vertical
component in most locations.

Bye.
Jasen
 
L

lerameur

Your gauss meter is not symmetrical through zero gauss, I
suspect. Try measuring a single pole with the the probe
turned each way, to see its asymmetry.

I calibrated at zero gauss. So when there is no magnetic field present
I took this value as zero Gauss, then I use 1000 gauss as the highest
value for 4.8v using the linear formula y=mx+b .

Ken
 
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