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  2. Twelfth grade - Wikipedia

    en.wikipedia.org/wiki/Twelfth_grade

    A 12th grade visual arts class in Scott County, Virginia in the United States. Twelfth Grade (also known as 12th Grade, Grade 12, Senior Year, Standard 12, 12th Standard, 12th Class, or Grade of the 12th) is the twelfth and final year of formal or compulsory education. It is typically the final year of secondary school and K–12 in most parts ...

  3. Chromatic scale - Wikipedia

    en.wikipedia.org/wiki/Chromatic_scale

    Chromatic scale drawn as a circle The diatonic scale notes (above) and the non-scale chromatic notes (below) [2] The twelve notes of the octave—all the black and white keys in one octave on the piano—form the chromatic scale. The tones of the chromatic scale (unlike those of the major or minor scale) are all the same distance apart, one ...

  4. Harmony - Wikipedia

    en.wikipedia.org/wiki/Harmony

    Therefore, the combination of notes with their specific intervals—a chord—creates harmony. [22] For example, in a C chord, there are three notes: C, E, and G. The note C is the root. The notes E and G provide harmony, and in a G7 (G dominant 7th) chord, the root G with each subsequent note (in this case B, D and F) provide the harmony. [22]

  5. Chemical file format - Wikipedia

    en.wikipedia.org/wiki/Chemical_file_format

    The XYZ file format is a simple format that usually gives the number of atoms in the first line, a comment on the second, followed by a number of lines with atomic symbols (or atomic numbers) and cartesian coordinates.

  6. Staff (music) - Wikipedia

    en.wikipedia.org/wiki/Staff_(music)

    A typical five-line staff. In Western musical notation, the staff [1] [2] (UK also stave; [3] plural: staffs or staves), [1] also occasionally referred to as a pentagram, [4] [5] [6] is a set of five horizontal lines and four spaces that each represent a different musical pitch or in the case of a percussion staff, different percussion instruments.

  7. Tool steel - Wikipedia

    en.wikipedia.org/wiki/Tool_steel

    Grade Composition Notes A2 [12] 1.0% C, 1.0% Mn, 5.0% Cr, 0.3% Ni, 1.0% Mo, 0.15–0.50% V: A common general purpose tool steel; it is the most commonly used variety of air-hardening steel. It is commonly used for blanking and forming punches, trimming dies, thread rolling dies, and injection molding dies. [11] A3 [13]

  8. Phrase (music) - Wikipedia

    en.wikipedia.org/wiki/Phrase_(music)

    Period built of two five-bar phrases in Haydn's Feldpartita in B ♭, Hob. II:12. [1] Diagram of a period consisting of two phrases [2] [3] [4]. In music theory, a phrase (Greek: φράση) is a unit of musical meter that has a complete musical sense of its own, [5] built from figures, motifs, and cells, and combining to form melodies, periods and larger sections.

  9. XYZ file format - Wikipedia

    en.wikipedia.org/wiki/XYZ_file_format

    The XYZ file format is a chemical file format. There is no formal standard and several variations exist, but a typical XYZ format specifies the molecule geometry by giving the number of atoms with Cartesian coordinates that will be read on the first line, a comment on the second, and the lines of atomic coordinates in the following lines. [ 1 ]