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A whistle is a quarter-wave generator, which means that a sound wave generated by a whistle is about four times the whistle length. If the speed of sound in the steam supplied to a whistle were 15936 inches per second, a pipe with a 15-inch effective length blowing its natural frequency would sound near middle C : 15936/(4 x 15) = 266 Hz.
A trailing edge tone occurs when an exterior flow passes over a trailing edge. There is a whistle that is a combination of an edge tone and a trailing-edge tone and might be called a wake-edge tone. It occurs in rotating circular saws under idling conditions and may be called the circular-saw whistle. Under load conditions, blade vibration ...
A train whistle or air whistle (originally referred to as a train trumpet or air trumpet) is an audible signaling device on a steam or gas locomotive, used to warn that the train is approaching, and to communicate with rail workers. Modern diesel and electric locomotives primarily use a powerful air horn instead of a whistle as an audible ...
Calliope on the Minne-Ha-Ha, a stern-wheeler on Lake George, New York Kitch Greenhouse Steam Calliope at the Ohio Historical Society – July 2006 Fairground calliope trailer being hauled by a U.S.-built traction engine – New Orleans Mardi Gras 2007 Steam calliope (c. 1901) built by George Kratz and used on the showboat French's New Sensation at The Mariners' Museum
Swanson published four books of verse between 1942 and 1953, and also a book of logging stories, Whistle Punks and Widow-Makers, which appeared in 1993. Known as the "bard of the woods", he wrote ballads of logging on the British Columbia coast, taking the advice of Robert Service , who noted that Swanson had traveled extensively through the ...
Adrian Stephens (1795 – 25 December 1876) was an English engineer, noted for inventing the steam whistle in 1833. [1] [2]Stephens was born in the Penzance area of Cornwall and came to Merthyr Tydfil, Wales, in 1827 to work at the Dowlais ironworks.
These phenomena can potentially generate vibrations of the ferromagnetic, conductive parts, coils and permanent magnets of electrical, magnetic and electromechanical device, resulting in an audible sound if the frequency of vibrations lies between 20 Hz and 20 kHz, and if the sound level is high enough to be heard (e.g. large surface of ...
English: During the Vietnam war era, the U.S. Navy destroyer USS Higbee (DD-806) had a steam locomotive whistle attached to a port side steam fitting on the main deck amidships. The whistle was used to salute the providing ship following underway replenishment.