The speed of sound is the distance travelled per unit time by a sound wave as it propagates through an elastic medium. In dry air at 20 Â°C (68 Â°F), the speed of sound is 343.2 metres per second (1,126 ft/s; 1,236 km/h; 768 mph; 667 kn), or a kilometre in 2.914 s or a mile in 4.689 s. The speed of sound in an ideal gas depends only on its temperature and composition. The speed has a weak dependence on frequency and pressure in ordinary air, deviating slightly from ideal behavior.
A flute is a musical instrument that produces sound when a stream of air is directed against the edge of a hole, causing the air within the body of the instrument to vibrate. Most flutes are tubular, but some are globular or other shapes.
Flute History. While the term flute refers to a broad number of instruments which are found in many different cultures, we will be exploring the history of our modern flute.There are many names for this special kind of flute.These names include: cross flute, German flute, transverse flute and flauto traverso.t is probable that the instrument was introduced into Western Europe by way of Germany from Byzantium. By the 14th century, the flute began to appear in non-Germanic European countries, which included Spain, France and Flanders.