Random Devotion: Geiger-Counters and Pink Granite

Two weeks ago I had the idea to center the devotional piece around a granite rock as source of randomness  - with a geiger counter measuring the (random) decay of radioactive particles from the rock. Here a chart tracing the decay of Radon gas and an explanation of the true random nature of this subatomic process:

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Last week I assembled a geiger-counter kit - lots of soldering and lots of fun:

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Now the setup can be more finalized:

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