JJ (Joseph John) Thomson (1856-1940) British physicist: discoverer of Electron and pioneer of nuclear physics. Here at work in the Cavendish Laboratory, Cambridge.

- Image ID: D966AA

JJ (Joseph John) Thomson (1856-1940) British physicist: discoverer of Electron and pioneer of nuclear physics. Here at work in the Cavendish Laboratory, Cambridge.

World History Archive / Alamy Stock Photo

Image ID: D966AA