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Tele Atlas is a Netherlands-based company founded in 1984 which delivers digital maps and other dynamic content for navigation and location-based services, including personal and in-car navigation systems, and provides data used in a wide range of mobile and Internet map applications. Since 30 July 2008, the company has been a wholly owned ...
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 .
Windows 3.1 with enhanced networking; designed to work particularly well as a client with the new Windows NT. [4] [5] Snowball — Windows for Workgroups 3.11: An updated version of Windows for Workgroups 3.1, which introduces 32-bit file access and network improvements. It also removes the Standard Mode, effectively dropping support for 16-bit ...
The early high-energy end of the spectrum for this diffuse X-ray background was obtained by instruments on board Ranger 3 and Ranger 5. [1] The X-ray flux corresponds to a total energy density of about 5 x 10 −4 eV/cm 3. [1] The ROSAT soft X-ray diffuse background (SXRB) image shows the general increase in intensity from the Galactic plane to ...
The Chandra X-ray Observatory ( CXO ), previously known as the Advanced X-ray Astrophysics Facility ( AXAF ), is a Flagship-class space telescope launched aboard the Space Shuttle Columbia during STS-93 by NASA on July 23, 1999. Chandra was sensitive to X-ray sources 100 times fainter than any previous X-ray telescope, enabled by the high ...
An alpha particle X-ray spectrometer ( APXS) is a spectrometer that analyses the chemical element composition of a sample from scattered alpha particles and fluorescent X-rays after a sample is irradiated with alpha particles and X-rays from radioactive sources. [1] This method of analysing the elemental composition of a sample is most often ...
Advanced Telescope for High-ENergy Astrophysics ( Athena) [ 1][ 2] is an X-ray observatory mission selected by European Space Agency (ESA) within its Cosmic Vision program [ 3] to address the Hot and Energetic Universe scientific theme. Athena will operate in the energy range of 0.2–12 keV and will offer spectroscopic and imaging capabilities ...
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 ...