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Demagnetizing Coefficients, N, for homogeneous isotropic bodies of various shapes.
| Shape | N Gaussian (unrationalized) | N SI (rationalized) |
|---|---|---|
| ‖ to axis of long needle | 0 | 0 |
| ⊥ to axis of long needle | 2π | 1/2 |
| sphere | 4π/3 | 1/3 |
| ⊥ to plane of a thin disc | 4π | 1 |
