Wilson Cloud Chamber (1 Viewer)

[lucky]

What was the purpose of that ethanol or wateva in the chamber?

 

[+:: $i[Q]u3 ::+]

the radiation ionises the air molecules.
the alcohol vapour then condenses around these molecules as visible droplets so u can see the path of the radiation.

 

[lucky]

thanks +:: $i[Q]u3 ::+