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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.
The basic unit was the mina, which was defined as 1 sixtieth of a maris, which itself was the quantity of water equal in weight to a light royal talent; the maris was thus equal to about 30.3 litres, and hence the mina is equal to about 0.505 litres. [1]
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]
The original Greek word translated as "mote" (κάρφος karphos) meant "any small dry body". [3] The terms mote and beam are from the King James Version; other translations use different words, e.g. the New International Version uses "speck (of sawdust)" and "plank". In 21st century English a "mote" is more normally a particle of dust ...
Equal to Metric equivalent Imperial equivalent Description pes quadratus square foot 1 pes qu. 0.0876 m 2 0.943 sq ft scrupulum or decempeda quadrata 100 pedes qu. 8.76 m 2 94.3 sq ft the square of the standard 10-foot measuring rod actus simplex 480 pedes qu. 42.1 m 2 453 sq ft 4 × 120 pedes [12] uncia 2,400 pedes qu. 210 m 2
It is used in the Bible as an ancient unit of volume for grains and dry commodities, and the Torah mentions it as being equal to one tenth of an ephah. [2] According to the Jewish Encyclopedia (1906), an ephah was defined as being 72 logs , and the Log was equal to the Sumerian mina , which was itself defined as one sixtieth of a maris ; [ 3 ...
half foot lichas λιχάς: 10 daktyloi 192.6 mm (7.58 in) distance from thumb-tip to tip of outstretched index finger [2] orthodōron ὀρθόδωρον: 11 daktyloi 211.9 mm (8.34 in) straight hand's width spithamē σπιθαμή: 12 daktyloi 231.2 mm (9.10 in) span of all fingers pous πούς: 16 daktyloi 308.2 mm (12.13 in) foot: pygmē