Wood is a thermal insulator, so with care, one might be able to build a thermistor bridge capable of detecting the differential temperature rise between pieces of brass when a source was placed near one brass-piece.
I, too, found that the expectations framed by the title were not met by the article. It's a pretty box, though.
Yeah, I feel like listing out the "raspberry pi, brass and wood" created the expectation that those were the crucial elements. Really the crucial element is a pre-made geiger counter and what they built is a beautiful enclosure and display. It's a cool project and they didn't lie, but it was misleading, and it seems it was the author of the piece who posted it so the confusion is reasonable to call out.
https://en.wikipedia.org/wiki/Bolometer
Wood is a thermal insulator, so with care, one might be able to build a thermistor bridge capable of detecting the differential temperature rise between pieces of brass when a source was placed near one brass-piece.
I, too, found that the expectations framed by the title were not met by the article. It's a pretty box, though.