Sound

The velocity of sound in the air, at the temperature of 32° Fahr., is about 1090 feet in a second. It is increased or diminished 1.07 feet for each degree of temperature above or below 32°. The distance of an object can be ascertained by the report of fire-arms, by observing the number of seconds that elapse between the flash and the report of a gun, and multiplying the number by the velocity of sound in air.