Jubilee (biblical) it was thought that the English term "Jubilee" derives from the Hebrew term "yobel" (via Latin ""), which in turn derives from "yobhel", meaning "ram"; the Jubilee year was announced by a blast on a shofar, an instrument made from a ram's horn, during that year's Yom Kippur. An alternative etymology notes that the Latin verb "iūbilō", "shout for joy," predates the Vulgate, and proposes that instead the Latin "jubilo" (meaning "shout"), as well as Middle Irish "ilach" (victory cry), New English "yowl", and Ancient Greek "iuzo" (ἰύζω: shout), derived from the Proto-Indo-European root "*yu-" (shout for joy). In this
Wind instrument of thermal expansion of a wind instrument, even of a brass instrument, is negligible compared to the thermal effect on the air. The bell of a wind instrument is the round, flared opening opposite the mouthpiece. It is found on horns, trumpets and many other kinds of instruments. On brass instruments, the acoustical coupling from the bore to the outside air occurs at the bell for all notes, and the shape of the bell optimizes this coupling. On woodwinds, most notes vent at the uppermost open tone holes; only the lowest notes of each register vent fully or partly at