noun
magnetic field
Physics term for the region around a magnet or electric current where magnetic forces are observed. Often used interchangeably with 磁場 (じば), though 磁場 may be more common in everyday contexts.
電流が流れると、その周りに磁界が発生する。
When an electric current flows, a magnetic field is generated around it.
磁界の強さを測定する装置を開発した。
We developed a device to measure the strength of magnetic fields.