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  2. Unified Thread Standard - Wikipedia

    en.wikipedia.org/wiki/Unified_Thread_Standard

    The major diameter still extends to within ⁠ 1 / 8 ⁠ H of the theoretical sharp V, but the total depth of the thread is reduced 4% from ⁠ 5 / 8 ⁠ H = ⁠ 5 / 8 ⁠ cos(30°) P ≈ 0.541P to 0.52P. [5] This increases the amount of the theoretical sharp V which is cut off at the minor diameter by 10% from 0.25H to ⁠ 7 / 8 ⁠ − ⁠ 0. ...

  3. Screw thread - Wikipedia

    en.wikipedia.org/wiki/Screw_thread

    The minor diameter is the lower extreme diameter of the thread. Major diameter minus minor diameter, divided by two, equals the height of the thread. The minor diameter of a nut is its inside diameter. The minor diameter of a bolt can be measured with go/no-go gauges or, directly, with an optical comparator.

  4. Differential topology - Wikipedia

    en.wikipedia.org/wiki/Differential_topology

    In mathematics, differential topology is the field dealing with the topological properties and smooth properties [a] of smooth manifolds.In this sense differential topology is distinct from the closely related field of differential geometry, which concerns the geometric properties of smooth manifolds, including notions of size, distance, and rigid shape.

  5. Category:Smooth manifolds - Wikipedia

    en.wikipedia.org/wiki/Category:Smooth_manifolds

    Pages in category "Smooth manifolds" The following 19 pages are in this category, out of 19 total. ... This page was last edited on 4 February 2012, at 16:45 (UTC).

  6. Exhaust manifold - Wikipedia

    en.wikipedia.org/wiki/Exhaust_manifold

    Diagram of an exhaust manifold from a Kia Rio. 1. manifold; 2. gasket; 3. nut; 4. heat shield; 5. heat shield bolt Ceramic-coated exhaust manifold on the side of a performance car. In automotive engineering, an exhaust manifold collects the exhaust gases from multiple cylinders into one pipe.

  7. Symplectic manifold - Wikipedia

    en.wikipedia.org/wiki/Symplectic_manifold

    Symplectic manifolds arise from classical mechanics; in particular, they are a generalization of the phase space of a closed system. [1] In the same way the Hamilton equations allow one to derive the time evolution of a system from a set of differential equations, the symplectic form should allow one to obtain a vector field describing the flow of the system from the differential of a ...

  8. British Standard Pipe - Wikipedia

    en.wikipedia.org/wiki/British_Standard_Pipe

    In the modern standard metric version, it is simply a size number, where listed diameter size is the major outer diameter of the external thread. For a taper thread, it is the diameter at the "gauge length" (plus/minus one thread pitch) from the small end of the thread.

  9. Template:Lee Introduction to Smooth Manifolds/doc - Wikipedia

    en.wikipedia.org/wiki/Template:Lee_Introduction...

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