Ask the Chatbot Games & Quizzes History & Society Science & Tech Biographies Animals & Nature Geography & Travel Arts & Culture ProCon Money Videos
Geiger counter
Table of Contents
Introduction References & Edit History
Images
Geiger counter
Discover
World Data Locator Map: Australia
Is Australia an Island?
New Zealand. Political/Physical map. Includes locator.
Where Is “Old Zealand”?
The Colosseum, Rome, Italy. Giant amphitheatre built in Rome under the Flavian emperors. (ancient architecture; architectural ruins)
New Seven Wonders of the World
Queen Elizabeth II addresses at opening of Parliament. (Date unknown on photo, but may be 1958, the first time the opening of Parliament was filmed.)
All 119 References in “We Didn’t Start the Fire,” Explained
Mona Lisa, oil on wood panel by Leonardo da Vinci, c. 1503-06; in the Louvre, Paris, France. 77 x 53 cm.
Why Is the Mona Lisa So Famous?
Baseball laying in the grass. Homepage blog 2010, arts and entertainment, history and society, sports and games athletics
10 Greatest Baseball Players of All Time
Watergate scandal. Richard M. Nixon. President Nixon gives a press conference and talks to the press, March 12, 1971.
9 American Political Scandals
Geiger counter
Geiger counter

Geiger counter

radiation detector
Also known as: Geiger-Müller counter
Written and fact-checked by
The Editors of Encyclopaedia Britannica
Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors.
The Editors of Encyclopaedia Britannica
Last Updated: • Article History
Also called:
Geiger-Müller Counter
Key People:
Hans Geiger
On the Web:
Magnetic Academy - Geiger Counter – 1908 (Apr. 03, 2025)

Geiger counter, type of ionization chamber (q.v.) especially effective for counting individual particles of radiation.

This article was most recently revised and updated by Amy Tikkanen.
Britannica Chatbot logo

Britannica Chatbot

Chatbot answers are created from Britannica articles using AI. This is a beta feature. AI answers may contain errors. Please verify important information using Britannica articles. About Britannica AI.