In lieu of spending a fair bit of money on dedicated muon detectors, you can also hack such a device together with two Geiger-Müller tubes and related circuitry for about $100 or whatever you can ...

[Ryan Harrington] shows us how to make a Geiger counter with very few parts, and you can see the results in the video below. The glut of surplus Russian tubes has made this a common project ...

Geiger counters can identify radioactive emissions, typically beta particles and gamma rays, and can be used to quantify the radiation a material releases or the radiation absorbed by a human or ...

Description: A geiger counter and a selection of radioactive sources. Available sources are: Thallium 204 (beta); Strontium 90 (beta); Cobalt 60 (gamma); Coleman propane lamp mantle containing ...