^^Bobine di Helmoltz.

Links

https://www.google.com/search?q=magnetic+field+of+a+loop

1. en.wp/Helmholtz_coil  2025-02-03 non esiste la pagina in italiano, benche' vi siano 21 lingue
2. hyperphysics./curloo
3. https://it.wikipedia.org/wiki/Spira_(magnetismo)
4. university central Florida ucf/magnetic-field-of-a-current-loop
5. wp/Biot-Savart_law
   1. #Formula_di_Laplace_per_circuiti_generici
   2. #Point_charge_at_constant_velocity