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Benefits of Radiation

Title: Benefits of Radiation
Category: /Science & Technology
Details: Words: 919 | Pages: 3 (approximately 235 words/page)
Benefits of Radiation
Benefits of Radiation Radioactivity is the spontaneous disintegration of atomic nuclei by the emission of subatomic particles called alpha particles and beta particles, or of electromagnetic rays called X rays and gamma rays. The phenomenon was discovered in 1896 by the French physicist Antoine Henri Becquerel when he observed that the element uranium can blacken a photographic plate, although separated from it by glass or black paper. He also observed that the rays that produce the …showed first 75 words of 919 total…
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…showed last 75 words of 919 total… placing the body in a steady magnetic field that is 30,000 times stronger than the earth's magnetic field. Then MRI stimulates the body with radio waves to change the steady-state orientation of protons. It then stops the radio waves and "listens" to the body's electromagnetic transmissions at a selected frequency. The transmitted signal is used to construct internal images of the body using principles similar to those developed for computerized axial tomography, or CAT scanners.

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