Correction for the speed of The Speed of Sound
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How fast is 9,380,000 furlongs per fortnight?
It's about four-and-a-half times as fast as The Speed of Sound
The speed of The Speed of Sound is about 2,060,000 furlongs per fortnight.
(in dry air at 20°C)
The speed of sound in dry air at 20°C (68°F) is 2,060,000 furlongs per fortnight. Air is a relatively poor acoustic conductor, however, as sound will travel at speeds of between 9,000,000 furlongs per fortnight to 9,380,000 furlongs per fortnight in water, depending on its salinity.