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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 ...
eBay was founded as AuctionWeb in California on September 3, 1995, by French-born Iranian-American computer programmer Pierre Omidyar as a hobby to make some extra money. [2] One of the first items sold on AuctionWeb was a broken laser pointer for $14.83. Astonished, Omidyar contacted the winning bidder to ask if he understood that the laser ...
X-ray diffraction (XRD) is still the most used method for structural analysis of chemical compounds. Yet, with increasing detail on the relation of K β {\displaystyle K_{\beta }} -line spectra and the surrounding chemical environment of the ionized metal atom, measurements of the so-called valence-to-core (V2C) energy region become ...
Especially when artificially produced, synchrotron radiation is notable for its: High brilliance, many orders of magnitude more than with X-rays produced in conventional X-ray tubes: 3rd-generation sources typically have a brilliance larger than 10 18 photons·s −1 ·mm −2 ·mrad −2 /(0.1%BW), where 0.1%BW denotes a bandwidth 10 −3 ω centered around the frequency ω.
Bridgeville, California (population 25) was the first town to be sold on eBay in 2002, and has been up for sale three times since. [1] In January 2003, Thatch Cay, the last privately held and undeveloped U.S. Virgin Island, was listed for auction by Idealight International. The minimum bid was US$3 million and the sale closed January 16, 2003. [2]
The Singularity Is Near – book by Raymond Kurzweil dealing with the progression and projections of development of computer capabilities, including beyond human levels of performance; TOP500 – list of the 500 most powerful (non-distributed) computer systems in the world
In the US 49/563.5 regulatory framework, Event data recorder is defined as a . a device or function in a vehicle that records the vehicle's dynamic time-series data during the time period just prior to a crash event (e.g., vehicle speed vs. time) or during a crash event (e.g., delta-V vs. time), intended for retrieval after the crash event.
Philips Telecommunicatie en Informatie Systemen (Philips Computers) was a subsidiary of Philips that designed and manufactured personal computers. [1] [2] Philips Computers was active from 1963 through 1992. [3] Before that, Philips produced three computers between 1953 and 1956, all for internal use, PETER, STEVIN, and PASCAL. [4]