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  2. Picul - Wikipedia

    en.wikipedia.org/wiki/Picul

    In imperial China and later, the unit was used for a measure equivalent to 100 catties. [8] In 1831, the Dutch East Indies authorities acknowledged local variances in the definition of the pikul. [9] In Hong Kong, one picul was defined in Ordinance No. 22 of 1844 as 133 + 1 ⁄ 3 avoirdupois pounds. [5] The modern definition is exactly 60. ...

  3. Catty - Wikipedia

    en.wikipedia.org/wiki/Catty

    Related units include the picul, equal to 100 catties, and the tael, which is 1 ⁄ 16 of a catty. A stone is a former unit used in Hong Kong equal to 120 catties and a gwan ( 鈞 ) is 30 catties. Catty or kati is still used in Southeast Asia as a unit of measurement in some contexts especially by the significant Overseas Chinese populations ...

  4. Tael - Wikipedia

    en.wikipedia.org/wiki/Tael

    Common weights were 50, 10, 5 and one tael. Before the year 1840 the government of the Qing dynasty had set the official exchange rate between silver sycees and copper-alloy cash coins was set at 1,000 wén for 1 tael of silver before 1820, but after the year 1840 this official exchange rate was double to 2,000 wén to 1 tael. [5]

  5. List of metric units - Wikipedia

    en.wikipedia.org/wiki/List_of_metric_units

    The outhouse is a unit of area used in nuclear physics equal to 10 −6 barns (100 am 2 = 10 −34 m 2). The barn (b) is a unit of area used in nuclear physics equal to one hundred femtometres squared (100 fm 2 = 10 −28 m 2). The are (a) is a unit of area equal to 100 m 2. The decare (daa) is a unit of area equal to 1000 m 2.

  6. Gunpowder weapons in the Ming dynasty - Wikipedia

    en.wikipedia.org/wiki/Gunpowder_weapons_in_the...

    The six cast-iron bands (for strengthening the barrel) each measures 1 ft 1 in. and weighs 3 catties. The barrel holds 100 bullets, each weighing 0.5 oz. (5 qian) and 3 oz. of (gun-)powder. [36] Long range awe-inspiring cannon (weiyuanpao) Each weighs 120 catties and measures 2 ft 8 in. long.

  7. Orders of magnitude (time) - Wikipedia

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

    31.6 Ts (1000 ka, 1 Ma): One mega-annum (Ma), or one million years 79 Ts (2.5 Ma): The approximate time since earliest hominids of genus Australopithecus 130 Ts (4 Ma): The typical lifetime of a biological species on Earth 137 Ts (4.32 Ma): The length of the mythic unit of mahayuga, the Great Age, in Hindu mythology. 10 15: petasecond Ps

  8. SI derived unit - Wikipedia

    en.wikipedia.org/wiki/SI_derived_unit

    The SI has special names for 22 of these coherent derived units (for example, hertz, the SI unit of measurement of frequency), but the rest merely reflect their derivation: for example, the square metre (m 2), the SI derived unit of area; and the kilogram per cubic metre (kg/m 3 or kg⋅m −3), the SI derived unit of density.

  9. Four Years - Wikipedia

    en.wikipedia.org/wiki/Four_Years

    Four Years or 4 Years may refer to: 4 Years, a 2022 Indian Malayalam-language film "Four Years", a song by Jon McLaughlin from OK Now "Four Years", a song by The Story So Far from Under Soil and Dirt; Four Years, the original title of Australian TV series Four Years Later; Olympiad, period of four years associated with the Olympic Games of the ...