J (disambiguation)

J, J

• Is a letter of the Latin alphabet, see J.

In mathematics

• Is one of the three imaginary units of quaternions
• Is the symbol for the j- function, a modular form
• Jn is a abbreviation for the Johnson - body.

In mechanics

• Is the letter for the moment of inertia.

In electrical engineering / electronics

• Is the imaginary unit, especially for complex AC bills (to avoid mix-up with the current).

In Physics

• Is the symbol for the current density
• Is the unit vector in the y- direction in three-dimensional Euclidean space
• Is the total angular momentum quantum number of an electron in an atom
• Is the total angular momentum quantum number of the electron shell
• Is the mechanical angular momentum quantum number of a molecule
• Is the symbol for the ion dose.

In the SI unit system

• Is the unit symbol of power and represents Joule
• Is the dimension symbol of the light intensity candela.

In chemistry

• Was formerly abbreviated the chemical element iodine with J. The notation in use today is iodine or I.

In computer science

• J is a programming language.

In the exegesis

• J is the siglum for the hypothetical Pentateuchquelle a Yahwist (two more sources sigliert with P and E).

J. stands for:

• Yes
• Year or
• Vintage.

In aviation, J stands for

• Jet Route - Jetrouten; Jetluftstraßen; upper airways (in the U.S. ); unlike Victor Airways
• Juliet ( int Phonetic Alphabet - ICAO alphabet).

In numismatics ( numismatics ) the code letter J represents

• Hamburg on German coins from 1873 to today, and on coins of German East Africa.

J as distinguishing signs on license plate:

• International: Japan
• Germany: district-free city Jena
• Island of Jersey
• Philippines: Region 9: Zamboanga Peninsula
• Spain: Jaen ( discontinued)
• Czech Republic: Kraj Highlands ( Jihlava ) (Eng. " Highlands Region " ) (being phased out ).

Other:

• Billeter J is a measure for the comparative description of demographic aging.

• J is sailboat class.

• In the former GDR was always referred to the main antenna with J at radio stations. This consisted of two poles, so there was a J1 and J2 mast. Examples: J1- mast Wachenbrunn, J1- mast Wiederau.

• J for Jew in German history: the passports of German Jews in 1938 stamped with a big red J (see Jewish star ).

Number of people:

• J is the short name occasionally used the Jamiroquai singer Jay Kay.

See also:

• Series J

• Disambiguation
• Abbreviation