A geiger counter measures radioactivity. It detects the emission of nuclear radiation from alpha particles, beta particles, and gamma rays.
A geiger counter is a measuring instrument, not a measure.
radioactive
Geiger counter was invented by the Hans Geiger in 1908.
The Geiger counter clicked as it checked for radiation.
Levels of radioactivity are measured by a Geiger counter. Hans Geiger and Walter Muller created a practical radiation counter in 1928.
With a Geiger counter.
A geiger counter measures radioactivity.
Anything it was not designed to measure.
Geiger counter was created in 1908.
A geiger counter can measure the intensity of gamma radiation passing through an object. By placing the geiger counter on one side of the object and a gamma radiation source on the other side, variations in intensity can be used to calculate the thickness of the object. Thicker objects will attenuate more gamma radiation, resulting in a lower intensity detected by the geiger counter.
A device generically called a Radiac, however there are dozens of different kinds of Radiacs which operate by different principles and measure different things. Some are:geiger-mueller counterrate meterionization chamber meterscintillation counterelectrometer dosimeterionization chamber dosimeterphotographic film dosimeter
The Geiger Counter was developed by Hans Geiger.