World's Quietest Room is in the _________ Country?
Correct answer: A. The U.S.A
- A. The U.S.A
- B. United Kingdom
- C. Canada
- D. Australia
Explanation
The often-cited world’s quietest room is at Orfield Laboratories in Minneapolis, United States. Its anechoic design absorbs reflected sound, allowing extremely low noise levels.
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About Inventions and Discoveries
Inventions and Discoveries covers the people, dates, principles and practical uses behind developments such as the wheel, printing press, telephone, electricity, radio, computer, internet, vaccines and space technology. It distinguishes an invention, which creates a device or process, from a discovery, which identifies something already present in nature.
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