![Helmholtz Coils](https://d27wgn5g4t3wja.cloudfront.net/img/ccd9f1b8-1422-08df-aa30-3fc6823a4347/218406.png)
Helmholtz Coils
Helmholtz-Coils are especially designed to generate precisely defined magnetic fields from DC to the upper end of the audio frequency range and beyond. The generated fields are in a strongly linear relation to the coil current. The field- strength can be calculated exactly by analytical (or numerical) methods, based on the coils' geometry, the number of turns and the coil current.