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  2. Joseph Hudson (inventor) - Wikipedia

    en.wikipedia.org/wiki/Joseph_Hudson_(inventor)

    Joseph Hudson (1848–1930) was an inventor in Birmingham, England during the late 19th century and the founder of J Hudson & Co in 1870, later to become the world largest whistle manufacturer . Hudson entered a competition held by the Metropolitan police force in London in 1883 to design a better way of attracting people's attention.

  3. Physics of whistles - Wikipedia

    en.wikipedia.org/wiki/Physics_of_whistles

    Police whistles are commonly used by referees and umpires in sporting events. The cross-section of a common whistle is shown in the figure on the right. The cavity is a closed-end cylinder ( 3 ⁄ 4 in (19 mm) diameter), but with the cylinder axis lateral to the jet axis.

  4. Bill Chadwick - Wikipedia

    en.wikipedia.org/wiki/Bill_Chadwick

    William Leroy "The Big Whistle" Chadwick (October 10, 1915 – October 24, 2009) was the first US-born referee to serve in the National Hockey League (NHL). Despite being blind in his right eye, his on-ice officiating career spanned the greater part of the 1940s and 1950s, during which he pioneered the system of hand signals for penalties which is now used in all hockey games internationally.

  5. Puppy Bowl assistant referee will miss calls. Give her a ...

    www.aol.com/puppy-bowl-assistant-referee-miss...

    The 20th-anniversary Puppy Bowl will be held on Super Bowl Sunday (Feb. 11). The puppiest show ever features Whistle, the first dog assistant referee.

  6. Fritz Graf - Wikipedia

    en.wikipedia.org/wiki/Fritz_Graf

    The weather was so cold (−11 °F (−24 °C)) that Fritz's whistle froze to his lips. The whistle can now be found in the Pro Football Hall of Fame in Canton, OH . He wore the uniform number 34 (except from 1979 to 1981, when officials were numbered by position, he wore number 7), later worn by referees Gerald Austin and Clete Blakeman .

  7. Premier League has its first female referee as Rebecca Welch ...

    www.aol.com/news/premier-league-first-female...

    The Premier League has its first female referee. Rebecca Welch blew her whistle to start the match between Fulham and Burnley on Saturday in a landmark moment for England's top league. Welch has ...

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