Mu (letter)

muμµGreek letter MuGreek lowercase mumicroMu (Μ)the Greek small letter "μμ (Mu)
Mu (uppercase Μ, lowercase μ; Ancient Greek μῦ, or μυ—both ) or my is the 12th letter of the Greek alphabet.wikipedia
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Greek alphabet

GreekGreek lettersGreek letter
Mu (uppercase Μ, lowercase μ; Ancient Greek μῦ, or μυ—both ) or my is the 12th letter of the Greek alphabet.

M

See below
Uppercase mu is not used, because it appears identical to Latin M.
The letter M is derived from the Phoenician Mem, via the Greek Mu .

Em (Cyrillic)

ММ мEm
Letters that derive from mu include the Cyrillic М.
It is derived from the Greek letter Mu .

Micro-

microμµ
The symbol for the prefix comes from the Greek letter μ (mu).

Muon

muonsantimuonmuon decay
*the elementary particles called the muon and antimuon
The muon (from the Greek letter mu used to represent it) is an elementary particle similar to the electron, with an electric charge of −1 e and a spin of 1/2, but with a much greater mass. It is classified as a lepton.

Permeability (electromagnetism)

permeabilitymagnetic permeabilityrelative permeability
Magnetic permeability is typically represented by the (italicized) Greek letter μ.

Reduced mass

reduced-massreducedreduced mass effect
The reduced mass is frequently denoted by \mu (mu), although the standard gravitational parameter is also denoted by \mu (as are a number of other physical quantities).

Viscosity

viscouskinematic viscositydynamic viscosity
Use of the Greek letter mu (\mu) for the viscosity is common among mechanical and chemical engineers, as well as physicists.

Micrometre

μmµmmicrometers
The official symbol for the SI prefix micro- is a Greek lowercase mu .

Friction

coefficient of frictionstatic frictionfriction coefficient
It is also used as coefficient of friction.
The coefficient of friction (COF), often symbolized by the Greek letter µ, is a dimensionless scalar value which describes the ratio of the force of friction between two bodies and the force pressing them together.

Bridging ligand

bridgingbridgeμ
*the prefix given in IUPAC nomenclature for a bridging ligand
In naming a complex wherein a single atom bridges two metals, the bridging ligand is preceded by the Greek character 'mu', μ, with a subscript number denoting the number of metals bound to the bridging ligand.

Clearing the neighbourhood

cleared the neighborhoodcleared its neighborhoodcleared their neighbourhoods
Steven Soter proposed an observationally based measure µ (mu), which he called the "planetary discriminant", to separate bodies orbiting stars into planets and non-planets.

Ancient Greek

GreekClassical GreekGr.
Mu (uppercase Μ, lowercase μ; Ancient Greek μῦ, or μυ—both ) or my is the 12th letter of the Greek alphabet.

Greek numerals

Greek numeralGreeknumeric
In the system of Greek numerals it has a value of 40.

Egyptian hieroglyphs

hieroglyphicshieroglyphichieroglyphs
Mu was derived from the Egyptian hieroglyphic symbol for water, which had been simplified by the Phoenicians and named after their word for water, to become 𐤌 (mem).

Phoenicia

PhoeniciansPhoenicianPhoenicio
Mu was derived from the Egyptian hieroglyphic symbol for water, which had been simplified by the Phoenicians and named after their word for water, to become 𐤌 (mem).

Modern Greek

GreekModernModern Greek language
In Modern Greek, the letter is spelled μι and pronounced.

Acute accent

acuteĺsíneadh fada
In polytonic orthography, it is written with an acute accent: μί.

Discipline (academia)

academic disciplinedisciplinesdiscipline
The lowercase letter mu is used as a special symbol in many academic fields.