What does Geiger counter measure?
The Geiger counter is a tool that was invented to measure radioactive materials for safety purposes. Factors that can prevent the Geiger counter from providing accurate results include failure to calibrate the tool before use, indirect readings that fail to locate hidden radioactive rays, and a low battery.
Geiger counters have gas in them that does not normally conduct electricity. When ionizing radiation passes into a Geiger counter, it makes the gas conductive, and the conductivity can be measured, indicating that the radiation is present. Gamma rays, which have no charge, can be measured by interacting with lead or steel in a Geiger counter, putting electrons into the gas.
Geiger Counter, named after Hans Geiger, who developed the device in 1908. There are several others, Crystals that emit light when exposed to radiation are coupled to photoelectric tubes and the light out-put of the crystal is a measure of the radiation absorbed by the crystal. Gas filled ionization chambers which operate much like a Geiger counter are another. Thermoluminescent materials, photographic (x-ray) film, cloud chambers, and bubble chambers are a few others. Sometimes it…