Stone to Silicon

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.

See it in the living treeWikipedia

Arcs above join it to what it stood on, arcs below to what it led to. The bar places this stretch on the tree's whole timeline.

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