Froskoy
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Hi,
I'm building a pair of helmholtz coils to do a variety of magnetism-related experiments. I've borrowed an old Avo Douglas coil winder and plan to do a couple of thousand turns on two sections of 50mm or 60mm diameter pipe. Some nylon threaded rod will pass through the middle of each coil, to make the distance between them tweakable, to ensure that the distance between them is exactly equal to the radius of each coil.
I have two questions:
1) Does the physical width of each coil have an effect? That is the width of each layer of the coil. Should this be minimised (e.g. just have five adjacent wires per layer) or does this not have any effect?
2) Is the distance r between the coils the distance between the centrepoint of each coil, or the distance between the closest points on each coil?
Any other comments to do with the practical aspects of making a pair of helmholtz coils and difficulties that may be encountered would be very much appreciated.
With very many thanks,
Froskoy.
I'm building a pair of helmholtz coils to do a variety of magnetism-related experiments. I've borrowed an old Avo Douglas coil winder and plan to do a couple of thousand turns on two sections of 50mm or 60mm diameter pipe. Some nylon threaded rod will pass through the middle of each coil, to make the distance between them tweakable, to ensure that the distance between them is exactly equal to the radius of each coil.
I have two questions:
1) Does the physical width of each coil have an effect? That is the width of each layer of the coil. Should this be minimised (e.g. just have five adjacent wires per layer) or does this not have any effect?
2) Is the distance r between the coils the distance between the centrepoint of each coil, or the distance between the closest points on each coil?
Any other comments to do with the practical aspects of making a pair of helmholtz coils and difficulties that may be encountered would be very much appreciated.
With very many thanks,
Froskoy.