2007-06-18 10:29:29 · 3 answers · asked by John K 1 in Science & Mathematics ➔ Physics
The B-field goes to zero fairly quickly inside a superconductor.
2007-06-18 10:34:13 · answer #1 · answered by Anonymous · 1⤊ 0⤋
As noted by previous respondants, a ferromagnetic material will collect all of the flux lines to itself, and so will screen things that are beyond it. This is really the opposite of "not passing through".
A good diamagnet will screen magnetic flux, preventing the flux from penetrating the material. A superconductor in its type 1 regime will work, but at room temperature you can get very good results with a material called "mu metal".
2007-06-18 13:04:55 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Any ferromagnetic material will block and redirect the field. This is the basis of magnetic shielding in electronic devices.
2007-06-18 12:06:02 · answer #3 · answered by LeAnne 7 · 0⤊ 0⤋