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  2. Parts-per notation - Wikipedia

    en.wikipedia.org/wiki/Parts-per_notation

    For example, the conversion factor between a mass fraction of 1 ppb and a mole fraction of 1 ppb is about 4.7 for the greenhouse gas CFC-11 in air (Molar mass of CFC-11 / Mean molar mass of air = 137.368 / 28.97 = 4.74). For volume fraction, the suffix "V" or "v" is sometimes appended to the parts-per notation (e.g. ppmV, ppbv, pptv).

  3. PPT - Wikipedia

    en.wikipedia.org/wiki/PPT

    .ppt, the file format used by Microsoft PowerPoint presentation software; Parts-per notation for parts-per-trillion (more common) or parts-per-thousand (less common) PerlPowerTools, a revitalized of the classic Unix command set in pure Perl; Positive partial transpose, a criterion used in quantum mechanics

  4. Talk:Parts-per notation - Wikipedia

    en.wikipedia.org/wiki/Talk:Parts-per_notation

    The examples don't seem to be too accurate. A drop is usually defined as 0.05 ml, which then gives;. 1 drop in 50 ml = 1‰, 50ml is a very small cup 1 drop in 50 l = 1ppm 50 l is about 11 gallons, not 40 1 drop in 50 cubic metres = 1 ppb 1 drop = 1ppt, a 50 m swimming pool is 50*25*2 = 2,500 m^3 1 drop in 50,000,000 cubic metres = 1ppq, 50,000,000 m^3 is equivalent to a lake covering a square ...

  5. List of file formats - Wikipedia

    en.wikipedia.org/wiki/List_of_file_formats

    TIFF, TIF – Tag(ged) Image File Format; usually lossless, but many variants exist, including lossy ones. TIFF/EP, TIF, TIFF – Tag Image File Format / Electronic Photography, ISO 12234-2; tends to be used as a basis for other formats rather than in its own right. VTF – Valve Texture Format

  6. Document file format - Wikipedia

    en.wikipedia.org/wiki/Document_file_format

    HTML is the most used and open international standard and it is also used as document file format. It has also become ISO / IEC standard (ISO 15445:2000). The default binary file format used by Microsoft Word ( .doc ) has become widespread de facto standard for office documents, but it is a proprietary format and is not always fully supported ...

  7. File format - Wikipedia

    en.wikipedia.org/wiki/File_format

    wav-file: 2.1 megabytes. ogg-file: 154 kilobytes. A file format is a standard way that information is encoded for storage in a computer file.It specifies how bits are used to encode information in a digital storage medium.

  8. Comparison of Office Open XML and OpenDocument - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_Office_Open...

    ISO/IEC IS 29500-1:2012—Office Open XML File Formats [1] OASIS Open Document Format for Office Applications (OpenDocument) v1.3 Latest ISO/IEC standardised version ISO/IEC IS 29500-1:2012—Office Open XML File Formats [1] ISO/IEC IS 26300-1:2015—Open Document Format for Office Applications (OpenDocument) v1.2 [2] Language type Markup language

  9. Office Open XML - Wikipedia

    en.wikipedia.org/wiki/Office_Open_XML

    In 2000, Microsoft released an initial version of an XML-based format for Microsoft Excel, which was incorporated in Office XP. In 2002, a new file format for Microsoft Word followed. [9] The Excel and Word formats—known as the Microsoft Office XML formats—were later incorporated into the 2003 release of Microsoft Office.