Search results
Results from the WOW.Com Content Network
Length measurement, distance measurement, or range measurement (ranging) all refer to the many ways in which length, distance, or range can be measured. The most commonly used approaches are the rulers, followed by transit-time methods and the interferometer methods based upon the speed of light .
The Bohr radius of the hydrogen atom (Atomic unit of length) a 0: 5.291 772 083 (19) × 10 −11 [13] The reduced wavelength of hydrogen radiation 1 / R ∞: 9.112 670 505 509 (83) × 10 −8 [13] The Planck length: 𝓁 P: 1.616 199 (97) × 10 −35 [15] Stoney unit of length l S: 1.381 × 10 −35: Quantum chromodynamics unit of length l QCD ...
A unit of measurement, or unit of measure, is a definite magnitude of a quantity, defined and adopted by convention or by law, that is used as a standard for measurement of the same kind of quantity. [1] Any other quantity of that kind can be expressed as a multiple of the unit of measurement. [2] For example, a length is a physical quantity.
22 — Size of Winchester bushel "every round bushel with a plain and even bottom being 18 + 1 ⁄ 2 ″ wide throughout and 8″ deep" (i.e. a dry measure of 2150 in 3 per gallon). 1706 6 Ann. c. 11 — Act of Union decreed the weights and measures of England to be applied in Scotland, whose burgs (towns) were to take charge of the duplicates ...
In the United States the pace is an uncommon customary unit of length denoting a brisk single step and equal to 2 + 1 ⁄ 2 feet or 30.0 inches or 76.2 centimetres. [ 3 ] [ 4 ] The Ancient Roman pace ( Latin : passus ) was notionally the distance of a full stride from the position of one heel where it raised off of the ground to where it set ...
However, the accepted number of Spanish nautical leagues to a degree varied between 14 1/6 to 16 2/3, so in actual practice the length of a Spanish nautical league was 25,733 feet (4.235 modern nautical miles) to 21,874 feet (3.600 modern nautical miles) respectively. [7]
The shed is a unit of area used in nuclear physics equal to 10 −24 barns (100 rm 2 = 10 −52 m 2). The outhouse is a unit of area used in nuclear physics equal to 10 −6 barns (100 am 2 = 10 −34 m 2). The barn (b) is a unit of area used in nuclear physics equal to one hundred femtometres squared (100 fm 2 = 10 −28 m 2).
1.4 m – length of a Peel P50, the world's smallest car; 1.435 m – standard gauge of railway track used by about 60% of railways in the world = 4 ft 8 1 ⁄ 2 in; 2.5 m – distance from the floor to the ceiling in an average residential house [118] 2.7 m – length of the Starr Bumble Bee II, the smallest plane