An x-ray tube is a simple device; a cathode emits electrons that strike a tungsten anode that emits x-rays. Most x-ray tubes, though, are relatively large with low-power mammography tubes being a ...

Some CT tubes are grid controlled for pulsed radiations to reduce the radiation dose. Field emission X-ray tubes (also called cold cathode tubes) In this style, in place of electron emission by ...

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.

Armed with a cheap high voltage DC power supply he acquired from an online auction house, he started to power up his x-ray vacuum tube. A smaller power supply energizes the cathode and forms an ...

The subject of this tutorial, the Hitachi S-4700 FE-SEM, utilizes a cold cathode field emitter composed of a ... on the sample surface is synchronized with the CRT, or cathode ray tube viewing screen.

Argonne develops a breakthrough material for the cathode in lithium-ion batteries. It enables an across-the-board improvement ...

Morgans' Scott Power said markets were suffering from US pre-election jitters not helped by mixed quarterly reporting season.

A fresh analysis of decades-old X-ray black hole jet data has revealed bright, lumpy features with mysterious speed changes.

On 8 November 1895, German scientist Wilhem Röntgen discovered x-rays ... whether cathode light rays - invisible streams of electrons, that could only be seen in glass vacuum tubes - could ...

X-ray diffraction (XRD ... XRD is proving valuable for accelerating the optimization of the sintering step during cathode manufacture. “There are multiple parameters to optimize when scaling ...

Chances are, your pet will need X-rays at some point during its life. X-rays help vets view your pet’s bones, tissues and internal organs so that they can diagnose issues such as broken bones ...

No matter your budget or how large a screen you want, here's what to look for when shopping for a television, along with the best TVs we've tested. I’ve been PCMag’s home entertainment expert ...