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  2. Bernhardt Holtermann - Wikipedia

    en.wikipedia.org/wiki/Bernhardt_Holtermann

    Bernhardt Otto Holtermann (29 April 1838 – 29 April 1885 [1] [2]) was a successful gold miner, businessman, politician and photographer in Australia. Perhaps his greatest claim to fame is his association with the Holtermann Nugget, the largest gold specimen ever found, 59 inches (1.5 m) long, weighing 630 pounds (290 kg) and with an estimated gold content of 3,000 troy ounces (93 kg), found ...

  3. Little Boy - Wikipedia

    en.wikipedia.org/wiki/Little_Boy

    The slug "insert" was a 4-inch cylinder, 7 inches in length with a 1-inch (25 mm) axial hole. The slug comprised 40% of the total fissile mass (25.6 kilograms or 56 pounds). The insert was a stack of six washer-like uranium discs somewhat thicker than the projectile rings that were slid over a 1-inch rod.

  4. United States customary units - Wikipedia

    en.wikipedia.org/wiki/United_States_customary_units

    Length. For measuring length, the U.S. customary system uses the inch, foot, yard, and mile, which are the only four customary length measurements in everyday use. From 1893, the foot was legally defined as exactly 1200⁄3937 m (approximately 0.304 8006 m). [13] Since July 1, 1959, the units of length have been defined on the basis of 1 yd = 0 ...

  5. Ancient Roman units of measurement - Wikipedia

    en.wikipedia.org/wiki/Ancient_Roman_units_of...

    A Roman steelyard weight of one dodrans, i.e. 3 ⁄ 4 libra. The units of weight or mass were mostly based on factors of 12. Several of the unit names were also the names of coins during the Roman Republic and had the same fractional value of a larger base unit: libra for weight and as for coin. Modern estimates of the libra range from 322 to ...

  6. Pound (mass) - Wikipedia

    en.wikipedia.org/wiki/Pound_(mass)

    The Russian pound (Фунт, funt) is an obsolete Russian unit of measurement of mass. It is equal to 409.51718 g (14.445293 oz). [ 49 ] In 1899, the funt was the basic unit of weight, and all other units of weight were formed from it; in particular, a zolotnik was 1⁄96 of a funt, and a pood was 40 fúnty.

  7. International System of Units - Wikipedia

    en.wikipedia.org/wiki/International_System_of_Units

    mole. amount of substance. cd. candela. luminous intensity. The SI comprises a coherent system of units of measurement starting with seven base units, which are the second (symbol s, the unit of time), metre (m, length), kilogram (kg, mass), ampere (A, electric current), kelvin (K, thermodynamic temperature), mole (mol, amount of substance ...

  8. Imperial units - Wikipedia

    en.wikipedia.org/wiki/Imperial_units

    The former Weights and Measures office in Seven Sisters, London (590 Seven Sisters Road). The imperial system of units, imperial system or imperial units (also known as British Imperial [1] or Exchequer Standards of 1826) is the system of units first defined in the British Weights and Measures Act 1824 and continued to be developed through a series of Weights and Measures Acts and amendments.

  9. Danish units of measurement - Wikipedia

    en.wikipedia.org/wiki/Danish_units_of_measurement

    the Danish pound (pund) as 1⁄62 of the weight of a cubic Rhineland foot of water (499.7 g) the Danish ell (alen) as 2 Rhineland feet (630 mm) Rømer also suggested a pendulum definition for the foot (although this would not be implemented until after his death), and invented an early temperature scale. [4][5] The metric system was introduced ...