理解电磁量

电磁量描述电场和磁场的各个方面及其与物质的相互作用。它们是理解电学、磁学和光学的基础。

介绍

Electromagnetic quantities form the foundation of our understanding of electricity, magnetism, and light. These quantities govern everything from simple circuits to radio waves and visible light.

历史

The understanding of electromagnetism evolved through the work of scientists like Coulomb, Ampère, Faraday, and Maxwell, who unified electricity and magnetism into a single theory.

关键单位

Tesla (T)

The SI unit of magnetic flux density or magnetic field strength.

Weber (Wb)

The SI unit of magnetic flux.

应用

  • Electric motors and generators
  • Wireless communication systems
  • Magnetic resonance imaging

Faraday's Law

ε = -dΦ/dt

The induced electromotive force equals the negative rate of change of magnetic flux with time.