- #1
synch
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If I understand it so far - a ferromagnetic object is attracted to a magnetic field ie towards the direction of most concentrated flux. So if there is no gradient there is no net force on the object.
If the flux is so strong that the object magnetically saturates, then increases in flux will not have further affect.(? am I on track?) So I am wondering, if the object is in the zone between A (where the flux is totally saturating) and B (where it is somewhat less, tapering to zero) it should experience a stability of sorts - if it moves further to A, the force towards A should diminish, if it moves further to B, the force towards A should increase.
This could be counterbalanced by the weight of the object. If the zone has a bowl shaped section it could cradle the object and keep it suspended (?). The standard lab electromagnet has a horizontal cylindrical field between the poles, albeit bulging to a degree..the lower half of the field should be suitable.
I looked at some saturation values, I think nickel saturates at a moderate value but a lower figure would be better. The maths and experiment are both out of reach for me, if anyone wants to dignify this with a comment or experiment please do !
If the flux is so strong that the object magnetically saturates, then increases in flux will not have further affect.(? am I on track?) So I am wondering, if the object is in the zone between A (where the flux is totally saturating) and B (where it is somewhat less, tapering to zero) it should experience a stability of sorts - if it moves further to A, the force towards A should diminish, if it moves further to B, the force towards A should increase.
This could be counterbalanced by the weight of the object. If the zone has a bowl shaped section it could cradle the object and keep it suspended (?). The standard lab electromagnet has a horizontal cylindrical field between the poles, albeit bulging to a degree..the lower half of the field should be suitable.
I looked at some saturation values, I think nickel saturates at a moderate value but a lower figure would be better. The maths and experiment are both out of reach for me, if anyone wants to dignify this with a comment or experiment please do !
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