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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 ...
Chandra X-ray Observatory, launched by NASA in 1999, is still operational as of 2024. An X-ray telescope ( XRT) is a telescope that is designed to observe remote objects in the X-ray spectrum. X-rays are absorbed by the Earth's atmosphere, so instruments to detect X-rays must be taken to high altitude by balloons, sounding rockets, and satellites .
An X-ray microscope uses electromagnetic radiation in the soft X-ray band to produce images of very small objects. Unlike visible light, X-rays do not reflect or refract easily, and they are invisible to the human eye. Therefore, the basic process of an X-ray microscope is to expose film or use a charge-coupled device (CCD) detector to detect X ...
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In 2011, Free Shipping Day became a billion-dollar shopping holiday with $1.072 billion in sales, followed by $1.01 billion during Free Shipping Day 2012. [6] In 2013, Knowles changed the format of Free Shipping Day to only include merchants that could waive all minimum order requirements and guarantee delivery by Christmas Eve. [7]
The death of Aeschylus, killed by a turtle dropped onto his head by a falcon, illustrated in the 15th-century Florentine Picture-Chronicle by Baccio Baldini. This list of unusual deaths includes unique or extremely rare circumstances of death recorded throughout history, noted as being unusual by multiple sources.
Due to their penetrating ability, hard X-rays are widely used to image the inside of objects (e.g. in medical radiography and airport security ). The term X-ray is metonymically used to refer to a radiographic image produced using this method, in addition to the method itself.
March 2, 2024 at 6:04 AM. Austin Lucas-Mattox and Tora Bonnier stand in a walkway near the dining room of the former Ho Toy restaurant location in Downtown Columbus. The two are partners in ...
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