How Does a Geiger Counter Work?

How Does a Geiger Counter Work?

September 9, 2026 · 12 min

About this episode

This episode explains how Geiger counters work and their historical significance in radiation detection.

The Geiger counters we use to detect harmful radiation today are 100-year-old technology that works based on simple behaviors of electrons and ions. Learn about ionizing radiation and the invention of the Geiger-Müller counter (including why it clicks) in today's episode of BrainStuff, based on this article: https://science.howstuffworks.com/geiger-counter.htm See omnystudio.com/listener for privacy information.

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