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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 ...
Maddox wing. The Maddox Wing is an instrument utilized by ophthalmologists, orthoptists and optometrists in the measurement of strabismus (misalignment of the eyes; commonly referred to as a squint or lazy eye by the lay person). It is a quantitative and subjective method of measuring the size of a strabismic deviation by dissociation of the ...
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.
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 ...
Prism dioptres. 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]
Strabismus. Strabismus is a vision disorder in which the eyes do not properly align with each other when looking at an object. [2] The eye that is pointed at an object can alternate. [3] The condition may be present occasionally or constantly. [3]
Johannes Brahms composed his Piano Trio No. 2 in C Major, Op. 87, between 1880 and 1882. It is scored for piano, violin and cello. He wrote this piece at the age of 49. Piano Trio in C major. No. 2. by Johannes Brahms. The composer in 1880. Key. C major.
Trio for two Oboes and English Horn in C major, Op. 87 is a trio composition by Ludwig van Beethoven written in 1794, shortly after he arrived in Vienna. Structure. This trio consists of 4 movements: 1. Allegro ; 2. Adagio ; 3. Minuet. Allegro molto. Scherzo - Trio (C major) 4. Finale. Presto (C major)