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The X-ray standing wave (XSW) technique can be used to study the structure of surfaces and interfaces with high spatial resolution and chemical selectivity. Pioneered by B.W. Batterman in the 1960s, the availability of synchrotron light has stimulated the application of this interferometric technique to a wide range of problems in surface science.
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. [73] The intermediate range with photon energies of several keV is often referred to as tender X-rays .
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An operator controlling The Virtual Interface Environment Workstation (VIEW) [ 1 ] at NASA Ames around 1990. Virtual reality (VR) is a simulated experience that employs 3D near-eye displays and pose tracking to give the user an immersive feel of a virtual world. Applications of virtual reality include entertainment (particularly video games ...
September 18, 2024 at 9:45 AM. Brooke Shields is feeling fabulous at 59. But she didn't expect to. After turning 50, the "Mother of the Bride" star didn't expect to feel more free. More powerful ...
X-ray optics is the branch of optics that manipulates X-rays instead of visible light.It deals with focusing and other ways of manipulating the X-ray beams for research techniques such as X-ray diffraction, X-ray crystallography, X-ray fluorescence, small-angle X-ray scattering, X-ray microscopy, X-ray phase-contrast imaging, and X-ray astronomy.
12 award-winning underwater photos give rare glimpses beneath the world's oceans. Talia Lakritz. September 12, 2024 at 11:55 AM. A crested sculpin in Alaska. Shane Gross/Ocean Photographer of the ...
X-ray absorption near edge structure (XANES), also known as near edge X-ray absorption fine structure (NEXAFS), is a type of absorption spectroscopy that indicates the features in the X-ray absorption spectra of condensed matter due to the photoabsorption cross section for electronic transitions from an atomic core level to final states in the energy region of 50–100 eV above the selected ...