Geiger counter

Definition

A Geiger counter is an instrument used for detecting and measuring ionizing radiation. It consists of a Geiger-Müller tube that produces an audible or visible signal when radiation is detected.

5 Must Know Facts For Your Next Test

1. Geiger counters detect alpha, beta, and gamma radiation.
2. The core component is the Geiger-Müller tube, which becomes ionized by radiation particles.
3. They are widely used in medical applications, nuclear industry, and radiological protection.
4. The device provides real-time measurements of radiation levels.
5. Geiger counters can be calibrated to measure different types of radiation.

Review Questions

• What types of radiation can a Geiger counter detect?
• How does the Geiger-Müller tube function within a Geiger counter?
• In what industries or fields are Geiger counters commonly used?

Related terms

Ionizing Radiation: Radiation with enough energy to remove tightly bound electrons from atoms, thus creating ions.

Dosimeter: A device that measures exposure to ionizing radiation over time.

Alpha Particles: Positively charged particles consisting of two protons and two neutrons emitted from certain radioactive nuclei.