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  2. Distress signal - Wikipedia

    en.wikipedia.org/wiki/Distress_signal

    A distress signal can be three fires or piles of rocks in a triangle, three blasts on a whistle, three shots from a firearm, or three flashes of light, in succession followed by a one-minute pause and repeated until a response is received. Three blasts or flashes is the appropriate response.

  3. Whistle-stop train tour - Wikipedia

    en.wikipedia.org/wiki/Whistle-stop_train_tour

    The definition of the term derives from the practice of a small, occasionally used railway station signaling a train so the engineer will know to stop. Trains inbound to a " whistle stop " station would signal their approach with a blast of the train's steam whistle which would alert the train depot attendant to their arrival.

  4. Whistle - Wikipedia

    en.wikipedia.org/wiki/Whistle

    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.

  5. General emergency signal - Wikipedia

    en.wikipedia.org/wiki/General_Emergency_Signal

    The signal is composed of seven or more short blasts followed by one long blast on the ship's whistle and internal alarm system. [1] Within 24 hours of embarkation of all passengers, the crew will conduct a mandatory muster drill in which the General Emergency Signal is sounded. The purpose of the drill is to educate passengers of emergency ...

  6. Whistling - Wikipedia

    en.wikipedia.org/wiki/Whistling

    An offstage whistle audible to the audience in the middle of a performance might also be considered bad luck. Transcendental whistling ( chángxiào 長嘯) was an ancient Chinese Daoist technique of resounding breath yoga, and skillful whistlers supposedly could summon supernatural beings, wild animals, and weather phenomena.

  7. Sun’s most powerful blast of energy rays just detected - but ...

    www.aol.com/sun-most-powerful-blast-energy...

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  8. 3 years after Beirut port blast, intrigue foils an ... - AOL

    www.aol.com/news/3rd-anniversary-beirut-port...

    The blast killed at least 218 people, according to an Associated Press count, wounded more than 6,000, devastated large swaths of Beirut and caused billions of dollars in damages.

  9. Air horn - Wikipedia

    en.wikipedia.org/wiki/Air_horn

    Steam whistle from a supertanker, in Merseyside Maritime Museum, United Kingdom. An air horn is a pneumatic device designed to create an extremely loud noise for signaling purposes. It usually consists of a source which produces compressed air, which passes into a horn through a reed or diaphragm. The stream of air causes the reed or diaphragm ...