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  2. Thickness-to-chord ratio - Wikipedia

    en.wikipedia.org/wiki/Thickness-to-chord_ratio

    a=chord, b=thickness, thickness-to-chord ratio = b/a The F-104 wing has a very low thickness-to-chord ratio of 3.36%. In aeronautics, the thickness-to-chord ratio, sometimes simply chord ratio or thickness ratio, compares the maximum vertical thickness of a wing to its chord.

  3. Standard RAID levels - Wikipedia

    en.wikipedia.org/wiki/Standard_RAID_levels

    Diagram of a RAID 1 setup. RAID 1 consists of an exact copy (or mirror) of a set of data on two or more disks; a classic RAID 1 mirrored pair contains two disks.This configuration offers no parity, striping, or spanning of disk space across multiple disks, since the data is mirrored on all disks belonging to the array, and the array can only be as big as the smallest member disk.

  4. Sterling 10.5 axle - Wikipedia

    en.wikipedia.org/wiki/Sterling_10.5_axle

    Current production ratios offered are 3.31, 3.55, 3.73, and 4.30. Since ca. 2005, the gears are formed by the face hob process, formerly face milled process. 2005 through 2012 have 13.38 in (340 mm) disk brakes, dual piston calipers and 8.1 in (210 mm) in hat parking brakes.

  5. Global Positioning System - Wikipedia

    en.wikipedia.org/wiki/Global_Positioning_System

    The solution space [x, y, z, b] can be seen as a four-dimensional spacetime, and signals from at minimum four satellites are needed. In that case each of the equations describes a hypercone (or spherical cone), [189] with the cusp located at the satellite, and the base a sphere around the satellite. The receiver is at the intersection of four ...

  6. Energy efficiency in transport - Wikipedia

    en.wikipedia.org/wiki/Energy_efficiency_in_transport

    A 68 kg (150 lb) person walking at 4 km/h (2.5 mph) requires approximately 210 kilocalories (880 kJ) of food energy per hour, which is equivalent to 4.55 km/MJ. [15] 1 US gal (3.8 L) of petrol contains about 114,000 British thermal units (120 MJ) [52] of energy, so this is approximately equivalent to 360 miles per US gallon (0.65 L/100 km).

  7. Apple I - Wikipedia

    en.wikipedia.org/wiki/Apple_I

    [29] [30] [31] Paul Terrell, who was starting a new computer shop in Mountain View, California, called the Byte Shop, [32] saw the presentation and was impressed by the machine. [ 33 ] [ 34 ] Terrell told Jobs that he would order 50 units of the Apple I and pay $500 each [ d ] on delivery, but only if they came fully assembled – he was not ...

  8. Mona Lisa - Wikipedia

    en.wikipedia.org/wiki/Mona_Lisa

    The catalogue raisonné Leonardo da Vinci (2019) confirms that the painting probably depicts Lisa del Giocondo, with Isabella d'Este being the only plausible alternative. [31] Scholars have developed several alternative views , arguing that Lisa del Giocondo was the subject of a different portrait, and identifying at least four other paintings ...

  9. List of European countries by life expectancy - Wikipedia

    en.wikipedia.org/wiki/List_of_European_countries...

    Estimation of the World Bank Group for 2022. [2] [3] [4] The data is filtered according to the list of countries in Europe.In the World Bank Group list and, accordingly, in this list, there are no mini-states with a population of several tens of thousands of people (Andorra, Monaco, San Marino, Vatican City).