The bulbs inside scanners (before transitioning to LED, anyway) were cold cathode fluorescent tubes that emit a fairly wide bandwidth of light. They were purpose-built to produce a very specific ...

A cold cathode is a cathode in a gas-filled electron tube that is not heated by a filament. The voltage potential within the tube is sufficient to ionize the gas and cause the current to flow.

Since the wavelength of an electron is much smaller than that of visible light, scanning electron microscopes are ... The subject of this tutorial, the Hitachi S-4700 FE-SEM, utilizes a cold cathode ...

STRL is constructing a prototype display using graphite nanofiber (GNF) as its cold cathode material. GNF is a nanometer *1 scale fiber material composed of carbon. Because it easily emits ...

Sturdy and reliable, the cold-cathode displays found their way into everything from scientific instruments to test equipment, and even some of the earliest computers and the equipment that formed ...