LYCOS RETRIEVER
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X rays are electromagnetic radiation ranging in wavelength from about 100 A to 0.01 A (1 A is equivalent to about 10-8 cm/about 4 billionths of an in.; see Wave Motion). The shorter the wavelength of the X ray, the greater is its energy and its penetrating power. Longer wavelengths, near the ultraviolet-ray band of the electromagnetic spectrum, are known as soft X rays (see Spectrum). The shorter wavelengths, closer to and overlapping the gamma-ray range, are called hard X rays (see Radioactivity). A mixture of many different wavelengths is known as “white” X rays, as opposed to “monochromatic” X rays, which represent only a single wavelength. Both light and X rays are produced by transitions of electrons that orbit atoms, light by the transitions of outer electrons and X rays by the transitions of inner electrons.
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Xfire is a marketing campaign launched by the X.org foundation to spread word about the new edition of X Window System, codename 'Compiz'. The campaign allows users to signup and install a program that monitors their use of Compiz. In return, users can get a dynamically generated image that displays various stats on their use, which are often found in forum signatures.
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LINE-X, a leader in developing and applying the most durable spray-on truck bedliners in the business, currently has a network of more than 550 franchised locations throughout the U.S. and Canada, as well as in 23 countries. The company specializes in high-quality bedliner coatings backed by the industry's first Nationwide Lifetime Warranty that's valid at any location.
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Foster may already have an option for future X-films, as 20th Century Fox had signed many of the new X3 actors with multiple-picture deals (just in case). Seeing as how Angel had a small role in ‘The Last Stand’, it would definitely be cool to see more of the character on the big screen. Now…if 20th Century Fox would just make another team film.
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The X-Men soon welcomed more new members, including Kitty Pryde, Rogue, and Rachel Summers. When the X-Men were believed dead after an encounter with the alien Brood, Xavier formed a new team of students dubbed the New Mutants. After the X-Men returned, Xavier continued to mentor both teams. The New Mutants even served temporarily as X-Men to save the team from interdimensional media mogul Mojo.
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X rays are produced whenever high-velocity electrons strike a material object. Much of the energy of the electrons is lost in heat; the remainder produces X rays by causing changes in the target's atoms as a result of the impact. The X rays emitted can have no more energy than the kinetic energy of the electrons that produce them (see Energy). Moreover, the emitted radiation is not monochromatic but is composed of a wide range of wavelengths with a sharp, lower wavelength limit corresponding to the maximum energy of the bombarding electrons. This continuous spectrum is referred to by the German name bremsstrahlung, which means “braking,” or slowing down, radiation, and is independent of the nature of the target. If the emitted X rays are passed through an X-ray spectrometer, certain distinct lines are found superimposed on the continuous spectrum; these lines, known as the characteristic X rays, represent wavelengths that depend only on the structure of the target atoms.
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