The big question that comes up - did the Red Bull Stratos jump break the speed of sound or not? How fast does sound travel through water? On Earth, the speed of sound at sea level assuming an air Space is a vacuum. Zero. A vactrain (or vacuum tube train) is a proposed design for very-high-speed rail transportation. The speed of sound depends on the density in the medium. Here I will describe a cannon that can drive ping pong balls fast enough to go through plywood and aluminum cans. The speed of light in a vacuum is 186,282 miles per second (299,792 kilometers per second), and in theory nothing can travel faster than light. First, the speed of sound IN AIR depends on the air temperature. Reply #8 on: 01/08/2007 12:19:55 The difference will be the square root of the difference in temperatures from absolute zero so for a freezer at -18C and a room at 20C it will be (255K/293K) = 0.93 of the speed in the room in the freezer. I did find work by a Martin Greenspan for the speed of sound in vacuum/partial vacuum. An easy-to-understand introduction to the science of sound: what is sound, how does it travel, and how does it make music? Original by Steve Carlip (1997) and Philip Gibbs 1996. One can then derive the speed of sound from a measurement of the time that an impulse of sound takes to traverse the tube. Just wanted to clarify, that the speed of sound in a vacuum is nonexistent. Sound is a wave, which means it spreads through the vibration of particles in a medium, such as water or air. Convert speed of light [vacuum] to speed of sound [air] (c to c), Speed metric conversion using Converterin So it wouldn't even be the slowest out of The speed of sound depends on the density in the medium. Calculate the speed of sound and compare it with the speed of light. Well I could ruin the fun by saying question doesnt make sense, but Ill be a little fun. Speed of light in vacuum is 299792458 m/s or 983571056.43045 ft/s. Well I could ruin the fun by saying question doesnt make sense, but Ill be a little fun. The Speed of Sound in Air. The speed of light is = 299 792 458 m/s. How is the speed of sound affected as a vacuum is produced? Sound cannot travel in a vacuum. At 30,000 feet altitude, where commercial airliners usually fly, the air temperature is around -48F and the speed of sound is down to 995 f/s (678 mph). Can't find something? Try searching. At even 59F, it has reduced to 1116 f/s (761 mph). Oct 13, 2010 #1. iminhell. The speed of sound in air is approximately 330 m/s (about 1,200 kph or 700 mph). Sound waves are carried by vibrating particles, so how could the waves pass through a vacuum devoid of atoms? Is The Speed of Light Everywhere the Same? Conversion between many speed and velocity units. The speed of sound varies depending on the temperature of the air through which the sound moves. The air molecules are moving with the speed, but by the speed of sound, we mean the speed of the disturbance as it moves through the air molecules. Light will be transported without a medium. I am not a scientist but I have a question about speed of sound in vacuum. Sound can not travel in a vacum.