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  2. OS X El Capitan - Wikipedia

    en.wikipedia.org/wiki/OS_X_El_Capitan

    There were multiple betas released after the keynote. OS X El Capitan was released to end users on September 30, 2015, as a free upgrade through the Mac App Store. [6] OS X El Capitan is the final version of OS X to support aluminum Macs and Xserve, as its successor macOS Sierra is incompatible with the mid-2007 and final models of these products.

  3. Tantalum - Wikipedia

    en.wikipedia.org/wiki/Tantalum

    Tantalum electrolytic capacitors exploit the tendency of tantalum to form a protective oxide surface layer, using tantalum powder, pressed into a pellet shape, as one "plate" of the capacitor, the oxide as the dielectric, and an electrolytic solution or conductive solid as the other "plate".

  4. Tantalum pentoxide - Wikipedia

    en.wikipedia.org/wiki/Tantalum_pentoxide

    Tantalum pentoxide, also known as tantalum(V) oxide, is the inorganic compound with the formula Ta 2 O 5. It is a white solid that is insoluble in all solvents but is attacked by strong bases and hydrofluoric acid. Ta 2 O 5 is an inert material with a high refractive index and low absorption (i.e. colourless), which makes it useful for coatings ...

  5. Coltan mining and ethics - Wikipedia

    en.wikipedia.org/wiki/Coltan_mining_and_ethics

    Coltan is the colloquial name for the mineral columbite-tantalum ("col-tan"). In the early 21st century coltan mining is associated with human rights violations such as child labour, systematic exploitation of the population by governments or militant groups, exposure to toxic chemicals and other hazards as a result of lax environmental protection, and general safety laws and regulations. [1]

  6. images.huffingtonpost.com

    images.huffingtonpost.com/2012-08-30-3258_001.pdf

    Created Date: 8/30/2012 4:52:52 PM

  7. Category:Tantalum minerals - Wikipedia

    en.wikipedia.org/wiki/Category:Tantalum_minerals

    Download as PDF; Printable version; In other projects Wikidata item; ... Pages in category "Tantalum minerals" The following 21 pages are in this category, out of 21 ...

  8. Tantalum (V) chloride - Wikipedia

    en.wikipedia.org/wiki/Tantalum(V)_chloride

    Tantalum pentachloride can be prepared by reacting powdered metallic tantalum with chlorine gas at between 170 and 250 °C. This reaction can also be performed using HCl at 400 °C. [4] 2 Ta + 5 Cl 2 → 2 TaCl 5 2 Ta + 10 HCl → 2 TaCl 5 + 5 H 2. It can also be prepared by a reaction between tantalum pentoxide and thionyl chloride at 240 °C

  9. Apple Disk Image - Wikipedia

    en.wikipedia.org/wiki/Apple_Disk_Image

    Apple [1] Disk Image is a disk image format commonly used by the macOS operating system. When opened, an Apple Disk Image is mounted as a volume within the Finder.. An Apple Disk Image can be structured according to one of several proprietary disk image formats, including the Universal Disk Image Format (UDIF) from Mac OS X and the New Disk Image Format (NDIF) from Mac OS 9.