Cloud chamber

Wilson developed a technique for making artificial clouds in a cloud chamber to visualize energetic particles by making droplets form around ions. It became an important tool in nuclear research, aiding in the visualization of particle paths and their properties.
 Charles Thomson Rees Wilson Scotland 1911 Cloud chamber

Wilson developed a technique for making artificial clouds in a cloud chamber to visualize energetic particles by making droplets form around ions. It became an important tool in nuclear research, aiding in the visualization of particle paths and their properties.