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Parsecs are used in astronomy to measure interstellar distances. A parsec is approximately 3.26 light-years or about 3.086×10 16 m (1.917×10 13 mi). Combining it with the "atto-" prefix (×10 −18) yields attoparsec (apc), a conveniently human-scaled unit of about 3.086 centimetres (1.215 in) that is used only humorously.
There are 7 base units and 22 derived units [1] (excluding compound units). These units are used both in science and in commerce. Two of the base SI units and 17 of the derived units are named after scientists. [2] 28 non-SI units are named after scientists. By this convention, their names are immortalised.
Iambic pentameter (/ aɪˌæmbɪk pɛnˈtæmɪtər / eye-AM-bik pen-TAM-it-ər) is a type of metric line used in traditional English poetry and verse drama. The term describes the rhythm, or meter, established by the words in each line. Rhythm is measured in small groups of syllables called "feet". "Iambic" indicates that the type of foot used ...
Bahar – a unit of length in Iran, and was a unit of mass in Oman; Batman – mostly a unit of mass, but sometimes a unit of area; Demal – unit of concentration; Dimi (metric prefix) – a discontinued non-SI metric prefix for 10 −4 [7] Einstein – unit of energy, and a unit of amount of substance; Fanega – a unit of dry volume, and a ...
The SI unit for pressure is the pascal (Pa), equal to one newton per square metre (N·m −2 or kg·m −1 ·s −2). This special name for the unit was added in 1971; before that, pressure in SI was expressed in units such as N·m −2. When indicated, the zero reference is stated in parentheses following the unit, for example 101 kPa (abs).
An iamb (/ ˈaɪæm / EYE-am) or iambus is a metrical foot used in various types of poetry. Originally the term referred to one of the feet of the quantitative meter of classical Greek prosody: a short syllable followed by a long syllable (as in καλή (kalḗ) "beautiful (f.)"). This terminology was adopted in the description of accentual ...
bar: 10 −5 bar. barye (CGS unit) 10 Ba. The pascal (symbol: Pa) is the unit of pressure in the International System of Units (SI). It is also used to quantify internal pressure, stress, Young's modulus, and ultimate tensile strength. The unit, named after Blaise Pascal, is an SI coherent derived unit defined as one newton per square metre (N ...
t. e. The foot is the basic repeating rhythmic unit that forms part of a line of verse in most Indo-European traditions of poetry, including English accentual-syllabic verse and the quantitative meter of classical ancient Greek and Latin poetry. The unit is composed of syllables, and is usually two, three, or four syllables in length.