The Joliot-Curies used a Wilson cloud chamber to conduct experiments with ... He had a Geiger counter nearby to measure radioactivity. When he was finished, he took the polonium away, but ...

To test the idea that this is from some external source, he takes a smoke detector with a radioactive sensor and places it near the coffee. That didn’t seem to have any effect. However ...

It featured a cloud chamber to observe the paths of alpha particles, a spinthariscope to visualize radioactive decay, and an electroscope to measure radiation levels. Alongside these instruments ...

a spinthariscope that allows radioactive decay to be seen on a fluorescent screen and a cloud chamber that enables the user to watch alpha radiation particles flying past at 12,000 miles per ...

The cloud chamber detects secondary cosmic rays and radioactive decays by making alcohol clouds along the particle paths through the chamber. Particles ionize alcohol molecules as they pass through ...

The cloud chamber detects secondary cosmic rays and radioactive decays by making alcohol clouds along the particle paths through the chamber. Particles ionize alcohol molecules as they pass through ...