Research Experiment to Determine the Speed of Sound

Summary / Introduction: When the vibration of our ear stimulates the auditory nerve, the sound is interpretation of our brain. It is created by material compression and sparseness. Sound velocity depends on characteristics of medium such as bulk modulus, density, moving temperature. It does not depend on the sound source. Sound propagates faster in the air, the density is lower and the temperature in the air is higher. Therefore, the higher the density and heat, the faster the sound speed.

The speed of sound varies greatly depending on the medium it propagates. The speed of the sound in the medium is determined by the combination of the rigidity of the medium (or the compression ratio in the gas) and its density. The harder the media (or the lower the compression ratio), the faster the sound speed. The higher the density of the medium, the slower the sound velocity. Because the air is compressible, the speed of sound in the air is very slow. Since liquids and solids are relatively rigid and very difficult to compress, the speed of sound in such media is typically greater than the speed of sound in gas. Table 14.1 shows the sound speed of various media. As temperature affects density, sound speed will depend on medium temperature, especially in the case of gas.

Sonar's motion is affected by the change in sound velocity, especially in the vertical plane. In freshwater, the sound is slower than sea water, but the difference is slight. Speed ​​is determined by the bulk modulus and mass density of water. Bulk modulus is affected by temperature, dissolved impurities (usually salinity) and pressure. The density effect is small. Sound speed (feet / second) is approximate. This empirically derived approximation is fairly accurate for normal temperature, salinity, and most sea depth range. Seawater temperature varies with water depth, but between 30 and 100 meters, there is usually a big change called thermal energy which separates warm surface water and cold water, and water making up the rest of the ocean. This is because the sound from one side of the hotline tends to bend or refract through the hotline, so sonar may cause frustration.

First, as explained on-line, "Sound velocity or sound wave traveling wave is a physical constant of an arbitrary medium at a specific pressure and temperature" (http://whatis.techtarget.com/definition/speed-of- It is sound. Sonic speed or acoustic traveling wave is the physical constant of any medium at a specific pressure and temperature. The completed experiment uses two methods to find the speed of the sound. This speed of sound is compared and compared with the tolerance proved to be scientifically correct under perfect conditions. Compare the results of the two methods and see which one is closest to the tolerance. The first method of generation is the basic formula that uses the base to make it work. The second method uses the frequency of the fork (512 Hz in this case) and calculates the sound wave by the following formula.