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A comment on Show HN: I built a desktop radiation monitor with Raspberry Pi, brass and wood.

Re:Show HN: I built a desktop radiation monitor with Raspber... by zeristor on Tuesday July 07, 2020 @11:32AM (#23760255)
It is known that the banana contains small amounts of radioactive postassium, perhpas it would be possible to use a banana for scale?

https://en.wikipedia.org/wiki/Banana_equivalent_dose

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