Dim lights in order to make the electron beam more visible. Wire up the heater and accelerator contacts (and also deflector contacts, if desired) on the tube to the power supply (or supplies). If ...

The Nobel Prize, which is awarded to those who “have conferred the greatest benefit to humankind”, is presented across a number of categories. Even though it recognises specific work done by people, ...

This has been claimed to be the apparatus with which Joseph John Thomson discovered the electron in 1897. Although it was certainly one of his instruments, he used a series of cathode-ray tubes in ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. J.J. Thomson's cathode ray tube #3, ...