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Wood affected by woodworm. Signs of woodworm usually consist of holes in the wooden item, with live infestations showing powder (faeces), known as frass, around the holes.. The size of the holes varies, but they are typically 1 to 1.5 millimetres (5 ⁄ 128 to 1 ⁄ 16 in) in diameter for the most common household species, although they can be much larger in the case of the house longhorn beet
Woodworm holes and burrows exposed in wooden floorboard. The first step in pest control is prevention. Particularly important in this respect is to keep the timber dry - below 16% moisture content. A relative humidity within the building above 60% may lead to an infestation, and timber moisture content below 12% is too dry for an infection to ...
In the 18th and early 19th centuries, the piano had evolved to have three strings to most notes. The soft pedal of this time was more effective than today, since it was possible to use it to strike three, two, or even just one string per note—this is the origin of the name una corda (Italian for 'one string').
Although the piano and its pedal configuration has been in its current form since the late 19th century, there was a development in 1987. The Fazioli piano company in Sacile, Italy, designed the longest grand piano produced up to now (10 feet 2 inches [3.10 m]). This piano includes four pedals: damper; sostenuto; una corda; and half-blow. [8]
Tone clusters...on the piano [are] whole scales of tones used as chords, or at least three contiguous tones along a scale being used as a chord. And, at times, if these chords exceed the number of tones that you have fingers on your hand, it may be necessary to play these either with the flat of the hand or sometimes with the full forearm.
In the movement entitled 'The Night's Music' [4] ('Musiques nocturnes' in French) of Out of Doors for solo piano (1926), Béla Bartók imitated the sounds of nature. It contains quiet, eerie, blurred cluster-chords and imitations of the twittering of birds and croaking of nocturnal creatures, with lonely melodies in contrasting sections.
The natural inharmonicity of a piano is used by the tuner to make slight adjustments in the tuning of a piano. The tuner stretches the notes, slightly sharpening the high notes and flatting the low notes to make overtones of lower notes have the same frequency as the fundamentals of higher notes. See also Piano wire, piano tuning, psychoacoustics.
Play ⓘ with sustain pedal on (bottom measures) Piano pedals from left to right: soft pedal, sostenuto pedal and sustain pedal Location of pedals under the keyboard of the grand piano. A sustain pedal or sustaining pedal (also called damper pedal, loud pedal, or open pedal [1]) is the most commonly used pedal in a modern piano. It is typically ...