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  2. United States customary units - Wikipedia

    en.wikipedia.org/wiki/United_States_customary_units

    For most applications, the difference between the two definitions is insignificant – one international foot is exactly 0.999 998 of a US survey foot, for a difference of about 1 ⁄ 8 in (3 mm) per mile – but it affects the definition of the State Plane Coordinate Systems (SPCSs), which can stretch over hundreds of miles.

  3. Scottish units - Wikipedia

    en.wikipedia.org/wiki/Scottish_units

    Scottish inch The Scottish inch was 25.44 mm, almost the same as the English (and modern international) inch (25.40 mm). [2] A fraudulent smaller inch of 1 ⁄ 42 ell (22.4 mm) is also recorded.

  4. Titius–Bode law - Wikipedia

    en.wikipedia.org/wiki/Titius–Bode_law

    The resulting values can be divided by 10 to convert them into astronomical units (AU), resulting in the expression: a = 0.4 + 0.3 × 2 n . {\displaystyle a=0.4+0.3\times 2^{n}~.} For the far outer planets, beyond Saturn , each planet is predicted to be roughly twice as far from the Sun as the previous object.

  5. History of telephone numbers in the United Kingdom - Wikipedia

    en.wikipedia.org/wiki/History_of_telephone...

    The longest telephone numbers in use until now had been 9 digits long (not including the 0 trunk code), e.g. 051 234 5678, 0303 456789, 03873 56789, 0800 445566. The long term plan is for migration to 10 digit numbering in the UK and in 1991 this started with new 0800 numbers being allocated with 10 digits.

  6. Transistor - Wikipedia

    en.wikipedia.org/wiki/Transistor

    In general, the higher the electron mobility the faster the transistor can operate. The table indicates that Ge is a better material than Si in this respect. However, Ge has four major shortcomings compared to silicon and gallium arsenide: Its maximum temperature is limited. It has relatively high leakage current. It cannot withstand high voltages.

  7. List of Volkswagen Group petrol engines - Wikipedia

    en.wikipedia.org/wiki/List_of_Volkswagen_Group...

    Turbocharging produces a maximum torque of 160 Nm (at 1,400 to 3,500 rpm). 1.2 TSI 77 kW The improved performance version of the 1.2 TSI Green tec, which includes a start/stop system and brake energy recuperation, manages an output of 77 kW (105 hp). This TSI engine provides a maximum torque of 175 Nm at between 1,400 and 4,000 rpm.

  8. Compact Disc Digital Audio - Wikipedia

    en.wikipedia.org/wiki/Compact_Disc_Digital_Audio

    There was a long debate over the use of 16-bit (Sony) or 14-bit (Philips) quantization, and 44,056 or 44,100 samples/s (Sony) or approximately 44,000 samples/s (Philips). When the Sony/Philips task force designed the Compact Disc, Philips had already developed a 14-bit D/A converter (DAC), but Sony insisted on 16-bit. In the end Sony won, so 16 ...