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2. Chrysler Air-Raid Siren - Wikipedia

   en.wikipedia.org/wiki/Chrysler_Air-Raid_Siren

   Its six horns are each 3 feet (91 cm) long. The siren has an output of 138 dB(C) (30,000 watts), and can be heard as far as 25 miles (40 km) away. In 1952, the cost of a Chrysler Air Raid Siren was $5,500 [1] (equivalent to $65,076 as of May 2024). The United States government helped buy sirens for selected state and county law enforcement ...

3. 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.

4. Physics of whistles - Wikipedia

   en.wikipedia.org/wiki/Physics_of_whistles

   The yellow plastic pipe shown in the image is a toy that whistles when the pipe is whirled around. The metal pipe shown was used in the Concorde cockpit to provide cooling air to the pilots, but it was removed due to its loud tone. This whistle is similar in many respects to the hole tone, in particular the teapot whistle.

5. The Most Outrageous Luxury RVs Money Can Buy - AOL

   www.aol.com/finance/most-outrageous-luxury-rvs...

   The Performance Perfection S model, which starts at about $2.4 million — and for around $7.7 million can include a Bugatti Chiron sportscar, along with additional (loud) bells and whistles such ...

6. 35 of the very best gifts for seniors that they'll actually ...

   www.aol.com/lifestyle/best-gifts-for-seniors...

   It may not have all the bells and whistles of some pricier models, but its combination of features, comfort, and affordability makes it a standout choice. This bike boasts 12 levels of magnetic ...

7. J Hudson & Co - Wikipedia

   en.wikipedia.org/wiki/J_Hudson_&_Co

   The 1950s and 60s marked growing demand for Hudson sports whistles (Olympics and other sport events on five continents). In 1957 A. R. Topman became an assistant general manager, and about 40 years later his son, Simon Topman, became the owner and the managing director of the company, starting the fourth period of company developments.