Math & science · 1831
Electromagnetic induction
Faraday shows that a changing magnetic field makes an electric current.
Moving a magnet through a coil produced current, the principle of every generator and transformer. Faraday's field lines inspired Maxwell's theory.
What it built on 2
What it led to 13
Related measurements
The dashed line marks when it first worked.
UK electricity output since 1896 Latest: 3.57M MWh (1998) Source: Our World in Data
World electricity generation Latest: 31.8k TWh (2025) Source: Our World in Data