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| X-Ray | Rays of short wavelengths ranging from 0.06 to 2 Angstrom units, which are emitted by suddenly changing the velocity of a moving electric charge by impact of a cathode ray on a target in a vacuum tube and by the changes in the atoms of the target caused by the impact. Also called Roentgen rays. |
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Siebel Institute of Technology - America's Oldest Brewing School