磁場

1. Origins, structure, and basic meaning

• Structure: 磁場(じば) is a noun for a magnetic field, the space around a magnet in which magnetic force acts.
• Basic usage: A field formed around a magnet appears in 磁石の周囲にできる磁場, while a location where a compass is affected appears in 強い磁場の近く.

2. Common pitfalls and similar expressions

• Magnetism and field
  • 磁気 refers to a magnetic property or phenomenon, while 磁場 focuses on the surrounding space where its influence acts.
• Formation and proximity
  • Use 周囲に for where the field forms and 磁場の近く for a position near a strong field.