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  2. Orders of magnitude (pressure) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(pressure)

    0.8–2 MPa 120–290 psi Pressure used in boilers of steam locomotives [citation needed] 1.1 MPa 162 psi Pressure of an average human bite [citation needed] 2.8–8.3 MPa 400–1,200 psi Pressure of carbon dioxide propellant in a paintball gun [64] 5 MPa 700 psi Water pressure of the output of a coin-operated car wash spray nozzle [58] 5 MPa ...

  3. Standard atmosphere (unit) - Wikipedia

    en.wikipedia.org/wiki/Standard_atmosphere_(unit)

    The standard atmosphere was originally defined as the pressure exerted by a 760 mm column of mercury at 0 °C (32 °F) and standard gravity (g n = 9.806 65 m/s 2). [2] It was used as a reference condition for physical and chemical properties, and the definition of the centigrade temperature scale set 100 °C as the boiling point of water at this pressure.

  4. Metre–tonne–second system of units - Wikipedia

    en.wikipedia.org/wiki/Metre–tonne–second...

    The metre–tonne–second (MTS) system of units was invented in France (hence the derived unit names sthène and pièze) where it became the legal system between 1919 and 1961. [1] It was adopted by the Soviet Union in 1933 and abolished there in 1955.

  5. Mach number - Wikipedia

    en.wikipedia.org/wiki/Mach_number

    The word Mach is always capitalized since it derives from a proper name, and since the Mach number is a dimensionless quantity rather than a unit of measure, the number comes after the word Mach. It was also known as Mach's number by Lockheed when reporting the effects of compressibility on the P-38 aircraft in 1942.

  6. Heavy water - Wikipedia

    en.wikipedia.org/wiki/Heavy_water

    1.25 mPa s (at 20 °C) Dipole moment. 1.87 D Hazards NFPA 704 (fire diamond) 1. 0. 0. ... AECL issued the construction contract in 1969 for the first BHWP unit (BHWP ...

  7. Shear force - Wikipedia

    en.wikipedia.org/wiki/Shear_force

    EN8 bright has a tensile strength of 800 MPa and mild steel, for comparison, has a tensile strength of 400 MPa. To calculate the force to shear a 25 mm diameter bar of EN8 bright steel; area of the bar in mm 2 = (12.5 2)(π) ≈ 490.8 mm 2 0.8 kN/mm 2 × 490.8 mm 2 = 392.64 kN ≈ 40 tonne-force

  8. Shore durometer - Wikipedia

    en.wikipedia.org/wiki/Shore_durometer

    A first-order estimate of the relation between ASTM D2240 type D hardness (for a conical indenter with a 15° half-cone angle) and the elastic modulus of the material being tested is [10] = (+ +), where is the ASTM D2240 type D hardness, and is in MPa.

  9. Hardnesses of the elements (data page) - Wikipedia

    en.wikipedia.org/wiki/Hardnesses_of_the_elements...

    This page was last edited on 16 November 2024, at 12:16 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.