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https://makezine.com/article/technology/new-in-the-maker-shed-alpha-particle-detecting-geiger-counter-kit/
New in the Maker Shed: Alpha Particle Detecting Geiger Counter Kit - Make:
Feb 7, 2012 - Why spend $400+ on a Geiger Counter when you can build your own for a fraction of the price? This new Geiger Counter Kit, available in the Maker Shed, was...
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