distance measurement
41Loudspeaker measurement — is one of the most difficult aspects of audio quality measurementFact|date=March 2008, and also probably the most relevant, since loudspeakers have long been generally acknowledged to be the weak link in the audio chainFact|date=March 2008.… …
42Obsolete Russian units of measurement — For the Indian spinning wheel known as a charkha, see spinning wheel. A native system of weights and measures was used in Imperial Russia and after the Russian Revolution, but it was abandoned in 1924 when the Soviet Union adopted the metric… …
43Swedish units of measurement — In Sweden, a common system for weights and measures was introduced by law in 1665. Before that, there were a number of local variants. The system was slightly revised in 1735. In 1855, a decimal reform was instituted that defined a new Swedish… …
44History of measurement — Units of measurement were among the earliest tools invented by humans. Primitive societies needed rudimentary measures for many tasks: constructing dwellings of an appropriate size and shape, fashioning clothing, or bartering food or raw… …
45Obsolete Polish units of measurement — The traditional Polish units of measurement included two uniform yet distinct systems of weights and measures, as well as a number of related systems borrowed from neighbouring states. The first attempt at standardisation came with the… …
46Mean Shortest Distance — In statistical analysis of the PGP/GnuPG/OpenPGP Web of trust the mean shortest distance (MSD) is one measurement of how trusted a given PGP key is within the strongly connected set of PGP keys that make up the Web of trust.Drew Streib wrote the… …
47Inverse distance weighting — (IDW) is a method for multivariate interpolation, a process of assigning values to unknown points by using values from usually scattered set of known points. A general form of finding an interpolated value u for a given point x using IDW is an… …
48Extragalactic distance scale — The extragalactic distance scale is a series of techniques used today by astronomers to determine the distance of cosmological bodies (beyond our own galaxy) not easily obtained with traditional methods. Some procedures utilize properties of… …
49Finnish units of measurement — In Finland, approximate units of measure were derived from natural actions or objects such body parts, later standardised for the purpose of commerce. Some Swedish and, later, Russian, units were also used.The measurements were first standardized …
50Lunar distance (astronomy) — This article is about the average distance from the Earth to the Moon. For its other use in navigation, see Lunar distance (navigation). Lunar perigee–apogee size comparison In astronomy, a lunar distance (LD) is a measurement of the distance… …
