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Wikipedia [c] is a free-content online encyclopedia written and maintained by a community of volunteers, known as Wikipedians, through open collaboration and the wiki software MediaWiki.
From cosmological arguments, relic background neutrinos are estimated to have density of 56 of each type per cubic centimeter and temperature 1.9 K (1.7 × 10 −4 eV) if they are massless, much colder if their mass exceeds 0.001 eV/c 2. Although their density is quite high, they have not yet been observed in the laboratory, as their energy is ...
Microsoft Windows keyboard layout for personal computers is as follows: However, there are several variations of so-called "phonetic keyboards" that are often used by non-Russians, where pressing an English letter key will type the Russian letter with a similar sound (A → А, S → С, D → Д, F → Ф, etc.).
where the Boltzmann constant k B is the ideal gas constant divided by the Avogadro number, and = = is the root-mean-square speed. [86] This direct proportionality between temperature and mean molecular kinetic energy is a special case of the equipartition theorem , and holds only in the classical limit of a perfect gas .
According to a report published by the Water Footprint organization in 2010, a single kilogram of beef requires 15 thousand litres (3.3 × 10 ^ 3 imp gal; 4.0 × 10 ^ 3 US gal) of water; however, the authors also make clear that this is a global average and circumstantial factors determine the amount of water used in beef production.
The Latin word data is the plural of datum, "(thing) given," and the neuter past participle of dare, "to give". [6] The first English use of the word "data" is from the 1640s. The word "data" was first used to mean "transmissible and storable computer information" in 1946. The expression "data processing" was first used in 1954. [6]
First implemented as a compile-and-go system rather than an interpreter, BASIC emerged as part of a wider movement towards time-sharing systems. General Electric, having worked on the Dartmouth Time-Sharing System and its associated Dartmouth BASIC, wrote their own underlying operating system and launched an online time-sharing system known as Mark I featuring a BASIC compiler (not an ...
In the RAL Design System Plus, there are groups of colours every 10° of hue and additionally at 75°, 85° and 95°. Possible lightness values are 15% through 90% in steps of 5% for monochromatic shades of grey (i.e. C = 0%) and 20% through 90% in steps of 10% and additionally 85% and 93%.