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  2. HAZMAT Class 1 Explosives - Wikipedia

    en.wikipedia.org/wiki/HAZMAT_Class_1_Explosives

    1: N 4/5: S 4/5: 4/5: 4/5: 4/5: 4/5: 4/5: 4/5: 4/5: 4/5: 4/5: 4/5 Notes A blank space in the table indicates that no restrictions apply. X: Indicates that explosives of different compatibility groups may not be carried on the same transport vehicle. 1: An explosive from compatibility group L shall only be carried on the same transport vehicle ...

  3. Object storage - Wikipedia

    en.wikipedia.org/wiki/Object_storage

    Object storage (also known as object-based storage [1] or blob storage) is a computer data storage approach that manages data as "blobs" or "objects", as opposed to other storage architectures like file systems, which manage data as a file hierarchy, and block storage, which manages data as blocks within sectors and tracks. [2]

  4. Binary blob - Wikipedia

    en.wikipedia.org/wiki/Binary_blob

    In the context of free and open-source software, proprietary software only available as a binary executable is referred to as a blob or binary blob.The term usually refers to a device driver module loaded into the kernel of an open-source operating system, and is sometimes also applied to code running outside the kernel, such as system firmware images, microcode updates, or userland programs.

  5. List of narrow-gauge model railway scales - Wikipedia

    en.wikipedia.org/wiki/List_of_narrow-gauge_model...

    Thus the scale and approximate prototype gauge are represented, with the model gauge used (9 mm for H0e gauge; 6.5 mm for H0f gauge) being implied. [2] The scales used include the general European modelling range of Z, N, TT, H0, 0 and also the large model engineering gauges of I to X, including 3 + 1 ⁄ 2, 5, 7 + 1 ⁄ 4 and 10 + 1 ⁄ 4-inch ...

  6. Comparison of data-serialization formats - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_data...

    ^ ASN.1 has X.681 (Information Object System), X.682 (Constraints), and X.683 (Parameterization) that allow for the precise specification of open types where the types of values can be identified by integers, by OIDs, etc. OIDs are a standard format for globally unique identifiers, as well as a standard notation ("absolute reference") for ...

  7. Gauge block - Wikipedia

    en.wikipedia.org/wiki/Gauge_block

    Gauge blocks (also known as gage blocks, Johansson gauges, slip gauges, or Jo blocks) are a system for producing precision lengths. The individual gauge block is a metal or ceramic block that has been precision ground and lapped to a specific thickness. Gauge blocks come in sets of blocks with a range of standard lengths.

  8. Gauge fixing - Wikipedia

    en.wikipedia.org/wiki/Gauge_fixing

    A particular choice of the scalar and vector potentials is a gauge (more precisely, gauge potential) and a scalar function ψ used to change the gauge is called a gauge function. [citation needed] The existence of arbitrary numbers of gauge functions ψ(r, t) corresponds to the U(1) gauge freedom of this theory. Gauge fixing can be done in many ...

  9. List of track gauges - Wikipedia

    en.wikipedia.org/wiki/List_of_track_gauges

    5 ft 1 ⁄ 2 in: England London and Blackwall Railway 1840–1849, converted to standard gauge 1,575 mm 5 ft 2 in: Spain Ferrocarril de Langreo: United States Columbus Ohio streetcars [97] 1,581 mm 5 ft 2 + 1 ⁄ 4 in: United States Southeastern Pennsylvania Transportation Authority (SEPTA), [98] Philadelphia: 1,588 mm 5 ft 2 + 1 ⁄ 2 in ...