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The kezayit is, by different sources, considered equal to 1 ⁄ 2 a beitza, 1 ⁄ 3 of a beitza, or not directly related to the other units of volume. 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]
The foot-poundal (symbol: ft-pdl) is a unit of energy, introduced in 1879, that is part of the Absolute English system of units, which itself is a coherent subsystem of the foot–pound–second system. [1] The foot-poundal is equal to 1/32.174049 that of the more commonly used foot-pound force.
Systems of measure either define mass and derive a force unit or define a base force and derive a mass unit [1] (cf. poundal, a derived unit of force in a mass-based system). A slug is defined as a mass that is accelerated by 1 ft/s 2 when a net force of one pound (lbf) is exerted on it. [2]
The poundal (symbol: pdl) is a unit of force, introduced in 1877, that is part of the Absolute English system of units, [citation needed] which itself is a coherent subsystem of the foot–pound–second system.
The candle and the foot-candle were the first defined units of light, defined in the Metropolitan Gas Act (1860). [8] The foot-candle is the intensity of light at one foot from a standard candle. The units were internationally recognized in 1881, and adopted into the metric system. [9]
Since in the British absolute system, in which the lb. is chosen as the unit of mass, the foot as unit of length, and the second as unit of time, the unit of force is the poundal, it is reasonable and is agreed that the British absolute unit of torque shall be that of a poundal acting at a distance of 1 foot, or (what is the same thing, as ...
The maris was defined as being the quantity of water equal in weight to a light royal talent, [4] and was thus equal to about 30.3 L (8.0 US gal), [3] making the omer equal to about 3.64 L (0.96 US gal). The Jewish Study Bible (2014), however, places the omer at about 2.3 L (0.61 US gal). [5]
The se'ah or seah (Hebrew: סאה sə’āh), plural se'im, is a unit of dry measure of ancient origin found in the Bible and in Halakha (Jewish law), which equals one third of an ephah, or bath. In layman's terms, it is equal to the capacity of 144 medium-sized eggs, or what is equal in volume to about 9 US quarts (8.5 litres). [1]