When using a Geiger counter, what does a high count rate indicate?

A high count rate on a Geiger counter indicates the presence of a significant amount of ionizing radiation in the environment. The Geiger counter detects radiation by counting the number of ionizing particles or photons that interact with the detector within a specific time frame.

When the count rate is high, it signifies that many radiation events are occurring, which correlates with an increased level of radiation exposure. This can arise from various sources, such as radioactive materials, radioactive decay, or environmental radiation. The device is functioning as intended by providing real-time feedback about radiation levels.

Understanding this relationship between count rate and radiation levels is crucial for assessing safety in areas where radiation may be present, as a higher count directly raises concern for potential health risks associated with radiation exposure.