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  2. Mass in C major (Beethoven) - Wikipedia

    en.wikipedia.org/wiki/Mass_in_C_major_(Beethoven)

    Ludwig van Beethoven composed the Mass in C major, Op. 86, to a commission from Prince Nikolaus Esterházy II in 1807. The mass, scored for four vocal soloists, choir and orchestra, was premiered that year by the Prince's musical forces in Eisenstadt. Beethoven performed parts of it in his 1808 concert featuring the premieres of four major ...

  3. Prism correction - Wikipedia

    en.wikipedia.org/wiki/Prism_correction

    Prism correction is commonly specified in prism dioptres, a unit of angular measurement that is loosely related to the dioptre. Prism dioptres are represented by the Greek symbol delta (Δ) in superscript. A prism of power 1 Δ would produce 1 unit of displacement for an object held 100 units from the prism. [2]

  4. C major - Wikipedia

    en.wikipedia.org/wiki/C_major

    Scott Joplin's "The Entertainer" is written in C major. Many musicians have pointed out that every musical key conjures up specific feelings. This idea is further explored in a radio program called The Signature Series. American popular songwriter Bob Dylan claimed the key of C major to "be the key of strength, but also the key of regret".

  5. Arabeske (Schumann) - Wikipedia

    en.wikipedia.org/wiki/Arabeske_(Schumann)

    See media help. Robert Schumann wrote his Arabeske in C major, Op. 18 in 1839 when he was 29 years old, dedicating it to Frau Majorin Friederike Serre auf Maxen, to whom he also dedicated his Blumenstück in D-flat, Op. 19. In the autumn of 1838 Schumann had left Leipzig for Vienna. His relationship with Clara Wieck had reached a point of no ...

  6. Diplopia - Wikipedia

    en.wikipedia.org/wiki/Diplopia

    Specialty. Neurology, ophthalmology. Diplopia is the simultaneous perception of two images of a single object that may be displaced horizontally or vertically in relation to each other. [1] Also called double vision, it is a loss of visual focus under regular conditions, and is often voluntary.

  7. Maddox rod - Wikipedia

    en.wikipedia.org/wiki/Maddox_rod

    The strength of the prism is increased until the streak of the light passes through the centre of the prism, as the strength of the prism indicates the amount of deviation present. The Maddox rod is a handheld instrument composed of red parallel plano convex cylinder lens , which refracts light rays so that a point source of light is seen as a ...

  8. Mass in C major, K. 259 "Organ solo" - Wikipedia

    en.wikipedia.org/wiki/Mass_in_C_major,_K._259...

    The Missa brevis No. 8 in C major, K. 259, is a mass composed by Wolfgang Amadeus Mozart in 1776. [1] It is scored for SATB soloists, SATB choir, violin I and II, 2 oboes, 2 clarini (high trumpets ), 3 trombones colla parte, timpani and basso continuo . Although classed as a missa brevis (brief mass), the inclusion of trumpets in the scoring ...

  9. Superpower (song) - Wikipedia

    en.wikipedia.org/wiki/Superpower_(song)

    "Superpower" is a song recorded by American singer Beyoncé, featuring Frank Ocean from her fifth studio album, Beyoncé (2013). It was written by Beyoncé and Ocean along with Boots (credited under his real name Jordan Asher) and Pharrell Williams who also served as its producer.