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  2. Kip (unit) - Wikipedia

    en.wikipedia.org/wiki/Kip_(unit)

    A kip is a US customary unit of force. It equals 1000 pounds-force , and is used primarily by structural engineers to indicate forces where the value represented in pound-force is inefficient. Although uncommon, it is occasionally also considered a unit of mass , equal to 1000 pounds (i.e. one half of a short ton ).

  3. Persian units of measurement - Wikipedia

    en.wikipedia.org/wiki/Persian_units_of_measurement

    The shekel and mina ("profane" or "sacred") were units of both weight and volume. A shekel or mina weight was equal to the weight of that volume of water. The talent was a measure of weight used for large amounts of coinage. Some related units were used in Persia in the 19th century, and are still used in contemporary Iran.

  4. Specific weight - Wikipedia

    en.wikipedia.org/wiki/Specific_weight

    The specific weight, also known as the unit weight (symbol γ, the Greek letter gamma), is a volume-specific quantity defined as the weight W divided by the volume V of a material: = / Equivalently, it may also be formulated as the product of density, ρ, and gravity acceleration, g: = Its unit of measurement in the International System of Units (SI) is newton per cubic metre (N/m 3), with ...

  5. List of metric units - Wikipedia

    en.wikipedia.org/wiki/List_of_metric_units

    The original is a unit of energy, equal to the energy in one mole (1 mol) of photons. The second is a unit of amount of photons , equal to one mole (1 mol) of photons. The rayleigh (R) is a unit of photon flux rate density equal to 10 10 m −2 ⋅s −1 (10 4 mm −2 ⋅s −1 ).

  6. List of obsolete units of measurement - Wikipedia

    en.wikipedia.org/wiki/List_of_obsolete_units_of...

    Spat – a unit of length equal to 1,000,000,000 km (620,000,000 mi) Stadion; Step; Unglie; Vara – an Aragonese, Spanish, and Portuguese unit [3] Yojana – a Vedic measure of distance used in ancient India. Its value was about 10 km (6.2 mi), although the exact value is disputed among scholars (between 8 and 13 km or 5 and 8 mi)

  7. Biblical and Talmudic units of measurement - Wikipedia

    en.wikipedia.org/wiki/Biblical_and_Talmudic...

    The omer, which the Torah mentions as being equal to one-tenth of an ephah, [30] is equivalent to the capacity of 43.2 eggs, or what is also known as one-tenth of three seahs. [31] In dry weight, the omer weighed between 1.560 kg to 1.770 kg, being the quantity of flour required to separate therefrom the dough offering. [32]

  8. Conversion of units - Wikipedia

    en.wikipedia.org/wiki/Conversion_of_units

    For example, the freezing point of water is 0 °C and 32 °F, and a 5 °C change is the same as a 9 °F change. Thus, to convert from units of Fahrenheit to units of Celsius, one subtracts 32 °F (the offset from the point of reference), divides by 9 °F and multiplies by 5 °C (scales by the ratio of units), and adds 0 °C (the offset from the ...

  9. Plan for Establishing Uniformity in the Coinage, Weights, and ...

    en.wikipedia.org/wiki/Plan_for_Establishing...

    The values of these units are based on Jefferson's proposal of a foot that was equal in length to one-fifth of a second rod, one fourth of an inch shorter than the foot in use at the time, and approximately equal to 0.298461684 m. [5] For the mass units, the ounce as a base would equal the weight of a cubic inch of pure water at standard ...