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The tonne (/ t ʌ n / ⓘ or / t ɒ n /; symbol: t) is a unit of mass equal to 1,000 kilograms. It is a non-SI unit accepted for use with SI. It is also referred to as a metric ton in the United States to distinguish it from the non-metric units of the short ton (United States customary units) and the long ton (British imperial units).
It is expressed in tonnes (1,000 kilograms (2,205 lb)) or long tons (2,240 pounds (1,016 kg)). This measurement is also used in the U.S. tonnage of naval ships. Increasingly, tonnes are being used rather than long tons in measuring the displacement of ships. Harbour ton, used in South Africa in the 20th century, was equivalent to (2,000 pounds ...
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 ...
The "long ton" is equal to 2240 pounds (1016.047 kg), the "short ton" is equal to 2000 pounds (907.18474 kg), and the tonne (or metric ton) (t) is equal to 1000 kg (or 1 megagram). Units of time and angle
The long ton, [1] also known as the imperial ton or displacement ton, [1] [2] is a measurement unit equal to 2,240 pounds (1,016.0 kg). It is the name for the unit called the " ton " in the avoirdupois system of weights or Imperial system of measurements.
The metric ton is the name used for the tonne (1000 kg, 2 204.622 62 lb), which is about 1.6% less than the long ton. The US customary system also includes the kip , equivalent to 1,000 pounds of force, which is also occasionally used as a unit of weight of 1,000 pounds (usually in engineering contexts).
The svedberg (S or Sv) is a unit of time used in chemistry equal to one hundred femtoseconds (100 fs). The shake is a unit of time used in nuclear physics equal to ten nanoseconds (10 ns). The sigma is a unit of time equal to one microsecond (1 μs). The jiffy is sometimes used to mean a unit of time of 10 ms. [dubious – discuss]
kilometre (km) or kilometer is a metric unit used, outside the US, to measure the length of a journey; the international statute mile (mi) is used in the US; 1 mi = 1.609344 km nautical mile is rarely used to derive units of transportation quantity.