The Castor particle accelerator is based on research by physicist JJ Thomson at Cambridge in 1897, credited with discovering the electron.
When electrical current is activated and a vacuum has been formed within the tube, electrons accelerate to 30% of the speed of light, striking other atoms, and then give off light as they settle. The light changes colour from purple toward white as the vacuum strengthens.
With consideration given to the accelerator’s design, its hand-blown glass tube with machined electrodes is displayed on top of a black marble base with an overhanging shade. Its transformer and vacuum are presented alongside, housed in custom component boxes.