Field Guide · person

Also known as: James Clerk Maxwell

James Clerk Maxwell (1831–1879) was a Scottish physicist whose equations unified electricity, magnetism, and light, predicting electromagnetic waves that travel at the speed of light.1

electric fieldmagnetic field
Maxwell's equations unified electricity and magnetism and predicted electromagnetic waves — the foundation of radio.

Life and work

In the 1860s Maxwell formulated the four equations that bear his name, showing that changing electric and magnetic fields sustain one another and propagate as waves.

Contribution

His theory predicted the electromagnetic spectrum decades before radio existed; Heinrich Hertz later proved it.1

Legacy

Maxwell’s equations remain the foundation of all radio engineering, including software-defined radio.

Sources

  1. James Clerk Maxwell — Wikipedia, for biography and his equations predicting electromagnetic waves.  2

See also