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Mu (/ ˈ m (j) uː /; [1] [2] uppercase Μ, lowercase μ; Ancient Greek μῦ, Greek: μι or μυ—both ) is the twelfth letter of the Greek alphabet, representing the voiced bilabial nasal IPA:. In the system of Greek numerals it has a value of 40. [ 3 ]
Greek letters are used in mathematics, science, engineering, and other areas where mathematical notation is used as symbols for constants, special functions, and also conventionally for variables representing certain quantities. In these contexts, the capital letters and the small letters represent distinct and unrelated entities.
The official symbol for the SI prefix micro is a Greek lowercase mu (μ). [7] For reasons stemming from its design, Unicode has two different character codes for the letter, with slightly different appearance in some fonts, although most fonts use the same glyph.
Gamma (symbol: γ) is a deprecated non-SI unit of mass equal to 1 μg. [2] A fullwidth version of the "microgram" symbol is encoded by Unicode at code point U+338D ㎍ SQUARE MU G for use in CJK contexts. [3] In other contexts, a sequence of the Greek letter mu (U+03BC) and Latin letter g (U+0067) should be used.
Use of the Greek letter mu for the dynamic viscosity (sometimes also called the absolute viscosity) is common among mechanical and chemical engineers, as well as mathematicians and physicists. [ 8 ] [ 9 ] [ 10 ] However, the Greek letter eta ( η {\displaystyle \eta } ) is also used by chemists, physicists, and the IUPAC . [ 11 ]
Chemical symbols are the abbreviations used in chemistry, mainly for chemical elements; but also for functional groups, chemical compounds, and other entities. Element symbols for chemical elements, also known as atomic symbols , normally consist of one or two letters from the Latin alphabet and are written with the first letter capitalised.
Permeability is typically represented by the (italicized) Greek letter μ. It is the ratio of the magnetic induction B {\displaystyle B} to the magnetizing field H {\displaystyle H} in a material. The term was coined by William Thomson, 1st Baron Kelvin in 1872, [ 1 ] and used alongside permittivity by Oliver Heaviside in 1885.
In coordination chemistry, a bridging ligand is a ligand that connects two or more atoms, usually metal ions. [1] The ligand may be atomic or polyatomic. Virtually all complex organic compounds can serve as bridging ligands, so the term is usually restricted to small ligands such as pseudohalides or to ligands that are specifically designed to ...