bobines de Helmholtz

[1989] Helmholtz coils revisited ; Edward M. Purcell ; American Journal of Physics 57 (jan 1989) p. 18 [lien]
[1996] An elementary derivation of the midplane magnetic field inside a pair of Helmholtz coils ; Richard C. Calhoun ; American Journal of Physics 64 (nov 1996) p. 1399 [lien]