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  2. Train noise - Wikipedia

    en.wikipedia.org/wiki/Train_noise

    This reduces noise in problem areas although trains make a distinctive tonal sound on freshly-ground track due to the pattern on the rail left by the grinding process, which wears flat over time. Rail squeal is a sound caused by a train's wheels slipping under specific conditions, usually around sharp curves.

  3. Brake - Wikipedia

    en.wikipedia.org/wiki/Brake

    Further, brakes are often mounted on wheels, and unsprung weight can significantly hurt traction in some circumstances. "Weight" may mean the brake itself, or may include additional support structure. NoiseBrakes usually create some minor noise when applied, but often create squeal or grinding noises that are quite loud.

  4. Glossary of United Kingdom railway terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_United_Kingdom...

    The power units made a distinctive "thumping" noise when working hard. [100] Thunderbird A locomotive kept on standby at a strategic location, ready to rescue a failed train—from Thunderbirds [101] Toothpaste The livery used by Network SouthEast. So called due to the red, white and blue colours resembling the colours of striped toothpaste.

  5. List of unexplained sounds - Wikipedia

    en.wikipedia.org/wiki/List_of_unexplained_sounds

    Upsweep is an unidentified sound detected on the American NOAA's equatorial autonomous hydrophone arrays. This sound was present when the Pacific Marine Environmental Laboratory began recording its sound surveillance system, SOSUS, in August 1991. It consists of a long train of narrow-band upsweeping sounds of several seconds in duration each.

  6. NIR 80 Class - Wikipedia

    en.wikipedia.org/wiki/NIR_80_Class

    An unidentified 80 class set carrying the then Iarnród Éireann logo at Dún Laoghaire in 1988. Three 3-car sets were leased by Iarnród Éireann (IÉ) from NIR in October 1987 for use on, respectively, the Bray–Greystones shuttle (previously operated by a push–pull set rebuilt from CIÉ 2600 Class railcars), the Dublin Connolly–Maynooth route, and the Cork–Cobh line.

  7. QSK operation (full break-in) - Wikipedia

    en.wikipedia.org/wiki/QSK_operation_(full_break-in)

    Without modifications or AGC circuit re-design such receivers are not suitable for QSK operation. In cases of slow responding AGC circuitry operators may accept the thumping noise and loss of AGC functionality and choose to turn their receiver AGC function off, instead operating their receivers using only manual gain control during QSK operation.

  8. Victims' lawyer questions timing of dementia diagnosis of ex ...

    www.aol.com/victims-lawyer-questions-timing...

    A lawyer for sex-trafficking victims in a ring allegedly run by ex-Abercrombie & Fitch CEO Mike Jeffries has doubts about claims he has dementia.

  9. Speed bump - Wikipedia

    en.wikipedia.org/wiki/Speed_bump

    Increase noise by creating tire-to-bump thumping and increasing the amount of engine-revving; Cause spinal damage [9] and aggravate chronic backache. In 2003, the chairman of the London Ambulance Service, Sigurd Reinton claimed that delays caused by speed bumps were responsible for up to 500 avoidable deaths from cardiac arrest each year.

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