ألمانية - الإنجليزية
تعريف helmholtz-spule في ألمانية الإنجليزية القاموس.
- Helmholtz coil
- one of a pair of flat coils, having equal numbers of turns and equal diameters, arranged on a common axis and connected in series; used to obtain a nearly uniform magnetic field without the use of a long solenoid