Wilson cloud chamber

A Wilson cloud chamber is a device used to visualize the paths of tiny charged particles, like those from radioactive sources. It contains alcohol vapor at warm temperatures, with a transparent supercooled layer of alcohol or water vapor. When charged particles pass through, they ionize the vapor along their paths, causing the vapor to condense into tiny droplets. These droplets form visible trails, allowing us to see the particles' trajectories. The chamber helps scientists study particle behavior and interactions, offering a tangible way to observe phenomena that are otherwise invisible.