Helmholtz coils are useful for creating near-uniform magnetic fields or for cancelling out external magnetic fields, such as the earth's. The field between the two solenoids is at its most uniform when the distance between them is equal to the
Helmholtz coils are useful for creating near-uniform magnetic fields or for cancelling out external magnetic fields, such as the earth's. The field between the two solenoids is at its most uniform when the distance between them is equal to the