X-ray tube

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Coolidge X-ray tube, from around 1917. The heated cathode is on the left, and the anode is right. The X-rays are emitted downwards.

An X-ray tube is a vacuum tube, that produces X-rays. They are used in X-ray machines. X-rays are part of the electromagnetic spectrum, an ionizing radiation with wavelengths shorter than ultraviolet light. X-ray tubes evolved from experimental Crookes tubes with which X-rays were first discovered in the late 19th century, and the availability of this controllable source of X-rays created the field of radiography, the imaging of opaque objects with penetrating radiation. X-ray tubes are also used in CAT scanners, airport luggage scanners, X-ray crystallography, and for industrial inspection.

• See also: Wikipedia, Commons

• Related: Computed axial tomography, Electron beam tomography, Angiography, Coronary angiography, Synchrotron radiation, X-ray fluorescence, X-ray generator

X-ray Tube X-ray Tube www.rtstudents.com/x-rays/xray-tube.htm - Web

The Cathode Ray Tube site The Cathode Ray Tube site www.crtsite.com/page5.html - Web

NY State Society of Radiologic Sciences NY State Society of Radiologic Sciences www.nyssrs.org - Web

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Collection of X-ray tubes Collection of X-ray tubes www.xraylamp.webd.pl/?sLang=en - Web

Excillum AB, a manufacturer of metal-jet-anode mic... Excillum AB, a manufacturer of metal-jet-anode microfocus x-ray tubes www.excillum.com - Web

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