Cool Speed Of Light Sound Ideas. Web compared with light, which moves at a stunning 186,000 miles per second (300,000 kilometers per second), sound waves are downright sluggish, moving through air at 0.2 miles per second (0.3 km. The speed of sound through air is about 340 meters per second.
Web imagine a world where the speed of light was slower. Even in air, which is nearly a vacuum, light slows down slightly. This is similar to the frequency of a wave on a string being equal to the frequency of the force oscillating the string.
