Answer;
Direction, speed, and distance of charged particles
The Wilson cloud chamber is used to study the direction, speed, and distance of charged particles.
Step-by-step explanation;
Wilson's Cloud Chamber is the classical pattern where alcohol saturates a pad in the chamber and a vacuum pump (reversed tyre pump) is used to draw a partial vacuum to super saturate the remaining air with alcohol vapour.
The Wilson cloud chamber works by producing a super-saturated vapor, as explained by florin. When a charged particle passes by, it ionizes the molecules of the liquid, and these ions become centers for droplets, which condense around the ionization trail.