Cathode ray

1869 Cathode ray

The book of science

Tom Sharp

Johann Wilhelm Hittorf electromagnetism

Cathode ray

Electron energy

Mysterious rays

At the time, Hittorf and other scientists did not know about electrons or the composition of atoms. The discovery of the cathode ray was an important step toward understanding our universe.

Although we understand the electromagnetic spectrum, which describes the range and limits of the behavior of photons, we have yet to fully pry apart and control all particles. Like photons, particles may travel. Hence travelling electrons, neutrinos, and ions. Hence electron and ion guns and particle accelerators.

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