Alpha and beta radiation are surprisingly abundant. The third type of gamma radiation is more commonly associated with artificially produced radioactivity. The right device for the detection of radiation, in all its forms, is the Geiger counter, an expensive instrument until a while ago. A Geiger counter can be built by a dedicated amateur. The assembly of your own Geiger counter can be an exercise in fascinating discovery. Everything from antique clocks to a brick, emit a small amount of radiation that can be detected with the Geiger counter described below.
Steps to follow
11. Mount the circuit board inside a plastic box with pre-drilled holes. Drill holes for speaker output, LED and ignition switch. The assembly of the actual circuit board is as simple as gluing the corners. However, you may want to install polystyrene foam sheets or some other non-conductive insulation to protect your circuit card from damage. Finally, drill a hole in the upper part of the Geiger counter to allow visual access to the front window of the Geiger-Muller tube.
- It is likely that the Geiger-Muller tube is the most expensive component of your Geiger counter.
- The circuit has a high voltage output, so do not attach the battery until all the components are in place. Gamma-ray radiation should never be sought, no matter how effective your new Geiger counter is.
- Store your circuit board in a well-ventilated area and remember to wear gloves and safety glasses.