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  2. 5 mm/35 SMc - Wikipedia

    en.wikipedia.org/wiki/5_mm/35_SMc

    SMc cartridges were developed in an attempt to produce an efficient cartridge combining low recoil, low heat, and high velocity. [4] The 5 mm/35 SMc has produced velocities in excess of 4,800 ft/s (1,500 m/s) shooting a 30-grain (1.9 g) molybdenum disulfide-coated Berger bullet from a 28-inch (71 cm) Pac-Nor barrel, far higher than its commercial counterpart the .204 Ruger.

  3. List of unusual units of measurement - Wikipedia

    en.wikipedia.org/wiki/List_of_unusual_units_of...

    Rack units are typically denoted without a space between the number of units and the 'U'. Thus, a 4U server enclosure (case) is seven inches (177.8 mm) high, or more practically, built to occupy a vertical space seven inches high, with sufficient clearance to allow movement of adjacent hardware.

  4. Calculator - Wikipedia

    en.wikipedia.org/wiki/Calculator

    The first American-made pocket-sized calculator, the Bowmar 901B (popularly termed The Bowmar Brain), measuring 5.2 by 3.0 by 1.5 inches (132 mm × 76 mm × 38 mm), came out in the Autumn of 1971, with four functions and an eight-digit red LED display, for US$240, while in August 1972 the four-function Sinclair Executive became the first ...

  5. List of humorous units of measurement - Wikipedia

    en.wikipedia.org/wiki/List_of_humorous_units_of...

    The nanoacre is a unit of real estate on a very-large-scale integration (VLSI) chip equal to 0.00627264 sq in (4.0468564224 mm 2) or the area of a square of side length 0.0792 in (2.01168 mm). VLSI nanoacres have similar total costs to acres in Silicon Valley.

  6. Hard disk drive - Wikipedia

    en.wikipedia.org/wiki/Hard_disk_drive

    The 1301 consisted of one (for Model 1) or two (for model 2) modules, each containing 25 platters, each platter about 1 ⁄ 8-inch (3.2 mm) thick and 24 inches (610 mm) in diameter. [32] While the earlier IBM disk drives used only two read/write heads per arm, the 1301 used an array of 48 [ l ] heads (comb), each array moving horizontally as a ...

  7. Nickel (United States coin) - Wikipedia

    en.wikipedia.org/wiki/Nickel_(United_States_coin)

    Its diameter is 0.835 inches (21.21 mm) and its thickness is 0.077 inches (1.95 mm). The silver half dime , equal to five cents, was issued from 1792 to 1873 before today's cupronickel version. The American Civil War caused economic hardship, driving gold and silver from circulation; in response, in place of low-value coins, the government at ...

  8. Largest and heaviest animals - Wikipedia

    en.wikipedia.org/wiki/Largest_and_heaviest_animals

    Size of Paraceratherium (dark grey) compared to a human and other rhinos (though one study suggests Palaeoloxodon namadicus may have been a larger land mammal). The blue whale is the largest mammal of all time, with the longest known specimen being 33 m (108.3 ft) long and the heaviest weighted specimen being 190 tonnes.

  9. Quarter (Canadian coin) - Wikipedia

    en.wikipedia.org/wiki/Quarter_(Canadian_coin)

    The quarter, short for quarter dollar, is a Canadian coin worth 25 cents or one-fourth of a Canadian dollar.It is a small, circular coin of silver colour. According to the Royal Canadian Mint, the official name for the coin is the 25-cent piece, but in practice, it is usually called a "quarter", much like its American counterpart.