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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 liquid whistle is a static mixer which passes fluid at high pressure through an orifice and over a blade. [1] This subjects the fluid to high turbulence and may result in mixing or emulsification .
Whistling can be used to control trained animals such as dogs. A shepherd's whistle is often used instead. Whistling has long been used as a specialized communication between laborers. For example, whistling in theatre, particularly on-stage, is used by flymen (members of a fly crew) to cue the lowering or raising of a batten pipe or flat. This ...
This whistle is the reason for the typical "long high - short low - short high" signal sound of steam locomotives in Germany. [18] Chime whistle – two or more resonant bells or chambers that sound simultaneously. In America, railway steam whistles were typically compact chime whistles with more than one whistle contained within, creating a chord.
A party whistle A metal pea whistle. A whistle is a musical instrument which produces sound from a stream of gas, most commonly air. It may be mouth-operated, or powered by air pressure, steam, or other means. Whistles vary in size from a small slide whistle or nose flute type to a large multi-piped church organ.
Mallinckrodt heard some whistling sounds and brought them to Helliwell's attention. [8] As Helliwell recalled in an article in the October 1982 issue of the Stanford Engineer , he initially thought it was an artifact , but stood radio watch with Mallinckrodt until he heard the whistlers himself.
Yes, Josh Hutcherson has seen the "Whistle" edit.The actor sat down with ET's Ash Crossan this week to talk about his role in the upcoming Jason Statham action flick, The Beekeeper, but first had ...
On some beaches around the world, dry sand makes a singing, squeaking, whistling, or screaming sound if a person scuffs or shuffles their feet with sufficient force. [ 4 ] [ 5 ] The phenomenon is not completely understood scientifically, but it has been found that quartz sand does this if the grains are highly spherical. [ 6 ]