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2. 24-Hour Stores Near Me: 40 Places Open Right Now - AOL

   www.aol.com/24-hour-stores-near-40-221910979.html

   Many Starbucks locations are open 24/7. Starbucks has 38,000 shops around the world. Waffle House: Founded in 1955 with a single location in Avondale Estates, Georgia, Waffle House now has more ...

3. X-ray emission spectroscopy - Wikipedia

   en.wikipedia.org/wiki/X-ray_emission_spectroscopy

   X-ray emission spectroscopy. X-ray emission spectroscopy ( XES) is a form of X-ray spectroscopy in which a core electron is excited by an incident x-ray photon and then this excited state decays by emitting an x-ray photon to fill the core hole. The energy of the emitted photon is the energy difference between the involved electronic levels.

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5. X-ray - Wikipedia

   en.wikipedia.org/wiki/X-ray

   X-ray astronomy, which is an observational branch of astronomy, which deals with the study of X-ray emission from celestial objects. X-ray microscopic analysis, which uses electromagnetic radiation in the soft X-ray band to produce images of very small objects.

6. X-ray absorption fine structure - Wikipedia

   en.wikipedia.org/wiki/X-ray_absorption_fine...

   The XANES energy region [3] extends between the edge region and the EXAFS region over a 50-100 eV energy range around the core level x-ray absorption threshold. Before 1980 the XANES region was wrongly assigned to different final states: a) unoccupied total density of states, or b) unoccupied molecular orbitals (kossel structure) or c) unoccupied atomic orbitals or d) low energy EXAFS ...

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9. Characteristic X-ray - Wikipedia

   en.wikipedia.org/wiki/Characteristic_X-ray

   Characteristic X-ray. Characteristic X-rays are emitted when outer- shell electrons fill a vacancy in the inner shell of an atom, releasing X-rays in a pattern that is "characteristic" to each element. Characteristic X-rays were discovered by Charles Glover Barkla in 1909, [ 1] who later won the Nobel Prize in Physics for his discovery in 1917.