If you haven't experienced a spinthariscope, I can highly recommend it. I bought one as a Christmas present for a buddy and we both enjoy its demonstration of radioactivity.
You can easily make them at home (source, I did last weekend!).
- Dry ice (mine came from something shipped cold)
- Dark piece of metal (I used a 3D printer hot bed) on top of dry ice to get cold
- IPA vapour (I poured some on a shop towel)
- Some transparent container to house it all - I found a glass display cube on the side of the road, fish tanks or Tupperware also work.
- Torch or something to provide side lighting
Very cool to see evidence of the particles zooming around us, can highly recommend.
There's one in the Musée des Arts et Métiers in Paris — blew my mind!
[^1]: https://en.wikipedia.org/wiki/Cloud_chamber
Edit: turns out people make these at home all the time. Sick!
https://hackaday.com/2019/01/13/see-the-radioactive-world-wi...
https://home.cern/news/news/experiments/how-make-your-own-cl...
https://en.wikipedia.org/wiki/Cherenkov_radiation