Description: A geiger counter and a selection of radioactive sources ... Americium 241 smoke detector source; wrist watch with Radium dial The counter is a Ludlum Model 3 Survey Meter. The meter may ...

There’s perhaps no sound more recognizable than the frantic clicking of a Geiger counter. Not because this is some post-apocalyptic world in which everyone is personally acquainted with the ...

In this lesson, students will investigate the nature of radioactivity and the effect of both distance and shielding materials on different radioactive sources using a Geiger-Muller tube with a counter ...

LONDON - Geiger Counter Limited, the investment company, has announced the purchase of 450,000 of its own ordinary shares on January 15, 2025. The shares were bought back at an average price of 49 ...

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 ...