X-RADIATION

• Product Name:X-RADIATION
• Synonyms: X-RADIATION
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• MW:0
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• Mol File:Mol File
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X-rays are electromagnetic radiation of extremely short wavelength (0.06 to 120 A), emitted as a result of electron transitions in the inner orbits of heavy atoms bombarded by cathode rays in a vacuum tube. Those of the shortest wavelength have the highest intensity and are called 'hard' x-rays. x-radiation was discovered by Roentgen in 1898. x-rays have the following properties: (i) They penetrate solids of moderate density, such as human tissue; they are retarded by bone, barium sulphate, lead and other dense materials. (ii) They act on photographic plates and fluorescent screens. (iii) They ionize gases through which they pass. (iv) x-rays damage or destroy diseased tissue. There is also a cumulative deleterious effect on healthy tissue. <br/> X-rays find wide use in medicine both for diagnosis and treatment and in engineering where radiographs are used to show up minute defects in structural members. X-ray tubes must always be carefully shielded because the radiation causes serious damage to living tissue.