2) The altitude above mean sea level. This is important for long range precision shooting because the air density changes with elevation and affects the path of the bullet. Extractor* A device that withdraws or elevates a fired shell casing or a live round from the chamber as the breech mechanism is opened.
The rebec was adopted as a key instrument in Arab classical music and in Morocco a tradition of Arabo-Andalusian music has been kept alive by descendants of Muslims who left Spain as refugees following the Reconquista.he instrument was used by dance masters until the 18th century, however, often being used for the same purpose as the kit, a small pocket-sized violin. The rebec also remained in use in folk music, especially in eastern Europe and Spain. Andalusi nubah, a genre of music from North Africa, often includes the rebec.
The piano (. [ËpjaËno] ; an abbreviation of pianoforte [pjanoËfÉrte]) is a musical instrument played using a keyboard. It is widely employed in classical and jazz music for solo and ensemble performances, accompaniment, and for composing and rehearsal.Although the piano is not portable and often expensive, its versatility and ubiquity have made it one of the world's most familiar musical instruments.An acoustic piano usually has a protective wooden case surrounding the soundboard and metal strings, and a row of 88 black and white keys (52 white, 36 black).The strings are sounded when the keys are pressed, and silenced when the keys are released.n acoustic piano usually has a protective wooden case surrounding the soundboard and metal strings, and a row of 88 black and white keys (52 white, 36 black). The strings are sounded when the keys are pressed, and silenced when the keys are released.