Radio waves were discovered, not invented

A natural phenomenon

Radio waves are electromagnetic waves. They are not an object that a person invented. Humans developed theories to explain them and instruments to generate, detect and use them. Separating those activities makes the historical question more accurate.

The Smithsonian Libraries holds Maxwell's 1865 paper on the electromagnetic field. Hertz's experiments in the 1880s, represented by instruments at the Deutsches Museum, belong to the later experimental investigation of electromagnetic waves. A theoretical prediction and a laboratory demonstration are different achievements.

From demonstration to communication

Detecting a physical effect does not by itself create a useful broadcasting network. Communication needs a controlled source, a receiver, a way to distinguish signals and an agreed meaning. Regular broadcasting also needs programme makers, distribution arrangements and listeners with suitable sets.

This is why a timeline can place Maxwell, Hertz and practical wireless systems on separate steps without choosing a single “inventor of waves”. Their work addressed related but different problems.

A listening experiment

Think about what changes as you select another station. In a traditional receiver, tuning selects a part of the radio spectrum. In our live-radio directory, the browser selects an internet stream. The content can be similar while the physical route is very different. See the waves exhibit for the short version and original sources.