Search results
Results from the WOW.Com Content Network
Several units were used to measure length. Legua was approximately equal to 2 2/3 in, [2] which is substantially different from the value of a Legua in Spanish customary units and a League elsewhere, which varied from about 1,500 metres to 11,000 metres.
The British imperial units and U.S. customary units for both energy and work include the foot-pound force (1.3558 J), the British thermal unit (BTU) which has various values in the region of 1055 J, the horsepower-hour (2.6845 MJ), and the gasoline gallon equivalent (about 120 MJ).
In Guatemala, a cuerda is a traditional unit of distance, equal to exactly 25 varas [1] or almost 21 meters (nearly 69 feet).. During 19th-century Spain, a cuerda was a unit of length, of nearly 6.889 m (approx. 7.554 yd). [2]
Like the decibel, the neper is a unit in a logarithmic scale.While the bel uses the decadic (base-10) logarithm to compute ratios, the neper uses the natural logarithm, based on Euler's number (e ≈ 2.71828).
The International Annealed Copper Standard (IACS) is a standard established in 1914 by the United States Department of Commerce. [1] It is an empirically derived standard value for the electrical conductivity of commercially available copper.
Determining the fineness of a paint's grind is important, because too coarse a grind may reduce the paint's color uniformity, gloss, and opacity. [7] The Hegman gauge is widely used for this purpose because it requires minimal skill and only a few seconds' work.
As open land became less available for granting by the Spanish Crown, and as portions of caballerías were pieced apart by their owners in sales transactions into smaller land units too small to be measured in caballerías and, thus, measured in the more convenient cuerda units, the use of caballería units started to become obsolete.
The Platinum-Cobalt Scale (Pt/Co scale or Apha-Hazen Scale) is a color scale that was introduced in 1892 by chemist Allen Hazen (1869–1930). The index was developed as a way to evaluate pollution levels in waste water.