The cloud chamber detects secondary cosmic rays and radioactive ... The thorium-232 in there is an alpha emitter, but there are alpha and beta emitters down the decay chain. High-energy particles ...

Inside the chamber, ionising radiations like Alpha and Beta will be indicated by tracks in the vapour. Large Alpha particles have short broad tracks while Beta particles have longer thinner tracks.

[Markus] demonstrates his cloud chamber by illuminating the cloud with a laser pointer and introducing a few alpha particles with a sample of Americium 241. It looks very cool, and seems to be ...

The cloud chamber detects secondary cosmic rays and radioactive ... The thorium-232 in there is an alpha emitter, but there are alpha and beta emitters down the decay chain. High-energy particles ...