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Travoprost. Travoprost, sold under the brand name Travatan among others, is a medication used to treat high pressure inside the eye including glaucoma. [ 4] Specifically it is used for open angle glaucoma when other agents are not sufficient. [ 5][ 4] It is used as an eye drop. [ 4] Effects generally occur within two hours.
This article is a list of piano brand names from all over the world. This list also includes names of old instruments which are no longer in production. Many of these piano brand names are "stencil pianos", which means that the company which owns the brand name is simply applying the name to a piano manufactured for them by another company,
A Faventia barrel piano. A barrel piano (also known as a "roller piano") is a forerunner of the modern player piano. Unlike the pneumatic player piano, a barrel piano is usually powered by turning a hand crank, though coin-operated models powered by clockwork were used to provide music in establishments such as pubs and cafés. [1]
Steinway Vertegrand. The Model K or " Vertegrand " is an upright piano introduced in 1903 by Steinway & Sons. It is the oldest essentially unchanged upright piano design currently in mass production. Although production was interrupted from about 1939 until its reappearance in 1982, the structural design has remained essentially the same for ...
The overwhelming popularity of his instruments was due to inexpensive construction and price. Over time, square pianos were built in larger sizes with more keys and a wider range; by the 1830s, square grand pianos predominated, with changes to their internal mechanisms and construction that produced larger sounds and used higher string tensions ...
Wm. Knabe & Co. was a piano manufacturing company in Baltimore, Maryland, from the middle of the nineteenth century through the beginning of the 20th century, and continued as a division of Aeolian-American at East Rochester, New York, until 1982. The name is currently used for a line of pianos manufactured by Samick Musical Instruments .
The piano is a keyboard instrument that produces sound when its keys are depressed, through engagement of an action whose hammers strike strings. Modern pianos have a row of 88 black and white keys, tuned to a chromatic scale in equal temperament . There are two main types of piano: the grand piano and the upright piano.
Piano key frequencies. This is a list of the fundamental frequencies in hertz (cycles per second) of the keys of a modern 88-key standard or 108-key extended piano in twelve-tone equal temperament, with the 49th key, the fifth A (called A 4 ), tuned to 440 Hz (referred to as A440 ). [ 1][ 2] Every octave is made of twelve steps called semitones ...