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  2. ANSI/ASME Y14.1 - Wikipedia

    en.wikipedia.org/wiki/ANSI/ASME_Y14.1

    A size chart illustrating the ANSI sizes. In 1992, the American National Standards Institute adopted ANSI/ASME Y14.1 Decimal Inch Drawing Sheet Size and Format, [1] which defined a regular series of paper sizes based upon the de facto standard 8 + 1 ⁄ 2 in × 11 in "letter" size to which it assigned the designation "ANSI A".

  3. Oxy-fuel welding and cutting - Wikipedia

    en.wikipedia.org/wiki/Oxy-fuel_welding_and_cutting

    A rose bud torch is used to heat metals for bending, straightening, etc. where a large area needs to be heated. It is so-called because the flame at the end looks like a rose bud. A welding torch can also be used to heat small areas such as rusted nuts and bolts.

  4. Glass-filled polymer - Wikipedia

    en.wikipedia.org/wiki/Glass-filled_polymer

    Glass-filled polymer (or glass-filled plastic), is a mouldable composite material.It comprises short glass fibers in a matrix of a polymer material. It is used to manufacture a wide range of structural components by injection or compression moulding. [1]

  5. Poly(methyl methacrylate) - Wikipedia

    en.wikipedia.org/wiki/Poly(methyl_methacrylate)

    It is used as a light guide for the backlights in TFT-LCDs. [ 48 ] Plastic optical fiber used for short-distance communication is made from PMMA, and perfluorinated PMMA, clad with fluorinated PMMA, in situations where its flexibility and cheaper installation costs outweigh its poor heat tolerance and higher attenuation versus glass fiber.

  6. List of Olympic and Paralympic torch designs - Wikipedia

    en.wikipedia.org/wiki/List_of_Olympic_torch_designs

    The torch resembles the shape of the torches which existed in the 19th Century. The continuity of the flame burning was provided by a special content known as "Tipizir 120/140". Thanks to this, the flame was able to burn for 22 hours non-stop. 61 22.0 1968: Grenoble, France: The torch was made from sheet copper that was covered in bronze.

  7. Sheet resistance - Wikipedia

    en.wikipedia.org/wiki/Sheet_resistance

    The reason for the name "ohms per square" is that a square sheet with sheet resistance 10 ohm/square has an actual resistance of 10 ohm, regardless of the size of the square. (For a square, =, so =.) The unit can be thought of as, loosely, "ohms · aspect ratio". Example: A 3-unit long by 1-unit wide (aspect ratio = 3) sheet made of material ...

  8. Whole Building Design Guide - Wikipedia

    en.wikipedia.org/wiki/Whole_Building_Design_Guide

    The Whole Building Design Guide or WBDG is guidance in the United States, described by the Federal Energy Management Program as "a complete internet resource to a wide range of building-related design guidance, criteria and technology", and meets the requirements in guidance documents for Executive Order 13123. [1]

  9. Blowtorch - Wikipedia

    en.wikipedia.org/wiki/Blowtorch

    The term "blowtorch" is commonly misused as a name for any metalworking torch, but properly describes the pressurized liquid fuel torches that predate the common use of pressurized fuel gas cylinders. Torches are available in a vast range of size and output power. The term "blowtorch" applies to the obsolescent style of smaller liquid fuel torches.