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  2. Roentgen equivalent man - Wikipedia

    en.wikipedia.org/wiki/Roentgen_equivalent_man

    The rem and millirem are CGS units in widest use among the U.S. public, industry, and government. [4] However, the SI unit the sievert (Sv) is the normal unit outside the United States, and is increasingly encountered within the US in academic, scientific, and engineering environments, and have now virtually replaced the rem. [ 5 ]

  3. AutoCAD DXF - Wikipedia

    en.wikipedia.org/wiki/AutoCAD_DXF

    AutoCAD DXF (Drawing Interchange Format, or Drawing Exchange Format) is a computer-aided design (CAD) data file format developed by Autodesk [2] to enable CAD data exchange and interoperability between AutoCAD on different computing platforms.

  4. Category:CAD file formats - Wikipedia

    en.wikipedia.org/wiki/Category:CAD_file_formats

    G - BRL-CAD standard solid modeling open format including support for primitives, attributes, and arbitrary data storage; See also: Computer-aided design; CAD data exchange; Comparison of CAD, CAM and CAE file viewers; Electronic design automation

  5. Orders of magnitude (radiation) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude...

    Recognized effects of higher acute radiation doses are described in more detail in the article on radiation poisoning.Although the International System of Units (SI) defines the sievert (Sv) as the unit of radiation dose equivalent, chronic radiation levels and standards are still often given in units of millirems (mrem), where 1 mrem equals 1/1,000 of a rem and 1 rem equals 0.01 Sv.

  6. AutoCAD version history - Wikipedia

    en.wikipedia.org/wiki/AutoCAD_version_history

    DWG R1.2 file format Version 1.3 1.3 August 1983 3 DWG R1.3 file format Version 1.4 1.4 October 1983 AC1.40 4 DWG R1.4 file format Version 2.0 2.0 October 1984 AC1.50 [3] 5 DWG R2.05 file format Version 2.1 2.1 May 1985 AC2.10 6 DWG R2.1 file format Version 2.5 2.5 June 1986 AC1002 7 DWG R2.5 file format Version 2.6 2.6 April 1987 AC1003 8

  7. Design Web Format - Wikipedia

    en.wikipedia.org/wiki/Design_Web_Format

    Design Web Format (DWF) is a file format developed by Autodesk for the efficient distribution and communication of rich design data to anyone who needs to view, review, or print design files. Because DWF files are highly compressed , they are smaller and faster to transmit than design files, without the overhead associated with complex CAD ...

  8. CAD standards - Wikipedia

    en.wikipedia.org/wiki/CAD_standards

    These checkers can be built into specific CAD packages or work on a number of CAD file formats. In 2006/2007 Part 59 of STEP ISO 10303 -59 Product data representation and exchange: Integrated generic resource: Quality of product shape data is under development.

  9. Spatial Data File - Wikipedia

    en.wikipedia.org/wiki/Spatial_data_file

    The file format is the native spatial data storage format for Autodesk GIS programs MapGuide and AutoCAD Map 3D. As of 2014 [update] SDF format version SDF3 (based on SQLite3 ) uses a single file. Prior versions of the format required a spatial index file (SIF), with an optional key index file (KIF) to speed access to the file.