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- X-ray, electromagnetic radiation of extremely short wavelength and high frequency, with wavelengths ranging from about 10 −8 to 10 −12 metre and corresponding frequencies from about 10 16 to 10 20 hertz (Hz).
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May 14, 2024 · X-ray, electromagnetic radiation of extremely short wavelength and high frequency, with wavelengths ranging from about 10 −8 to 10 −12 metre and corresponding frequencies from about 10 16 to 10 20 hertz (Hz). X-rays are commonly produced by accelerating (or decelerating) charged particles; examples include a beam of electrons striking a ...
X-rays with high photon energies above 5–10 keV (below 0.2–0.1 nm wavelength) are called hard X-rays, while those with lower energy (and longer wavelength) are called soft X-rays. The intermediate range with photon energies of several keV is often referred to as tender X-rays.
- History of X-Rays
- X-Ray Sources and Effects
- X-Ray Imaging
- X-Ray Therapy
- X-Ray Astronomy
X-rays were discovered in 1895 by Wilhelm Conrad Röentgen, a professor at Würzburg University in Germany. According to the Nondestructive Resource Center's "History of Radiography," Röentgen noticed crystals near a high-voltage cathode-ray tube exhibiting a fluorescent glow, even when he shielded them with dark paper. Some form of energy was being ...
X-rays can be produced on Earth by sending a high-energy beam of electrons smashing into an atom like copper or gallium, according to Kelly Gaffney, director of the Stanford Synchrotron Radiation Lightsource. When the beam hits the atom, the electrons in the inner shell, called the s-shell, get jostled, and sometimes flung out of their orbit. Witho...
Due to their ability to penetrate certain materials, X-rays are used for several nondestructive evaluation and testing applications, particularly for identifying flaws or cracks in structural components. According to the NDT Resource Center, "Radiation is directed through a part and onto [a] film or other detector. The resulting shadowgraph shows t...
Radiation therapy uses high-energy radiation to kill cancer cells by damaging their DNA. Since the treatment can also damage normal cells, the National Cancer Instituterecommends that treatment be carefully planned to minimize side effects. According to the U.S. Environmental Protection Agency, so-called ionizing radiation from X-rays zaps a focuse...
According to Robert Patterson, professor of astronomy at Missouri State University, celestial sources of X-rays include close binary systems containing black holes or neutron stars. In these systems, the more massive and compact stellar remnant can strip material from its companion star to form a disk of extremely hot X-ray-emitting gas as it spira...
We can define X-Rays or X-radiation as a form of electromagnetic radiation. They are powerful waves of electromagnetic energy. Most of them have a wavelength ranging from 0.01 to 10 nanometres, corresponding to frequencies in the range 3 × 10 19 Hz to 3×10 16 Hz and energies in the range 100 eV to 100 keV.
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- In a normal X-ray machine, X-rays are produced by bombarding cathode rays on a radioactive material. When a high speed cathode ray falls on a radio...
- Orthopantomography is the term that is used for describing the dental X-ray. In dentistry, X-rays are used for detecting the deformities, diseases,...
- Spine needs the longest exposure to X-ray. Spine is exposed for 0.20 seconds to get the proper image.
- X-rays can be recorded on a plate coated with silver halide. When silver halide plates are exposed to the heat, they start turning black resulting...
- 50 m is the minimum distance at which X-ray is being taken.
Aug 10, 2016 · X-rays have much higher energy and much shorter wavelengths than ultraviolet light, and scientists usually refer to x-rays in terms of their energy rather than their wavelength.
X-rays are a form of electromagnetic radiation, similar to visible light. Unlike light, however, x-rays have higher energy and can pass through most objects, including the body. Medical x-rays are used to generate images of tissues and structures inside the body.
Oct 31, 2022 · X rays are a kind of super-powerful version of ordinary light: a higher- energy form of electromagnetic radiation that travel at the speed of light in straight lines (just like light waves do).
