Scientists recorded the speed of sound at 36 km / s

Scientists recorded the speed of sound at 36 km / s

London: The fastest speed of sound recorded for the first time is about 36 kilometers per second.
Researchers at the Queen Mary University of London, Cambridge University and the Institute of High Pressure Physics in Moscow’s Trotsk said the result was twice as fast as the speed of sound in a diamond, the world’s hardest material.
Sound waves can travel through different sources such as air or water and vary at different speeds depending on what they are traveling through.
For example, they move faster than solids through liquids or gases, which is why if you hear the sound of diffusion instead of air on the rail track, we are able to get closer and hear the train.
Einstein’s theory sets the absolute absolute speed limit at which a wave can travel, which is the speed of light, and is approximately equal to 300,000 kilometers per second.
However, it is not known to this day whether sound waves have a high speed limit when traveling through solids or liquids.
Professor Chris Packard, Professor Chris Packard, said, “Sound waves are already very important in solid waves in many scientific disciplines. And used to understand the structural features of the earth. ” Of Materials Science at Cambridge University.
The study, published in the journal Science Advances, found that predicting the upper limit of sound velocity depends on two-dimensional core stability – fine structure constant and electron mass ratio from protons.
New discoveries suggest that both of these basic constants can affect specific scientific disciplines, such as physics and condensed matter physics, as well as limiting specific physical properties, such as the speed of sound.
Scientists tested their theoretical predictions extensively on material and refuted a particular prediction of their theory that the mass of an atom should slow down the speed of sound.
This prediction means that sound is the fastest in solid atom hydrogen.
To test this prediction, the researchers performed state-of-the-art quantum mechanical calculations and found that the speed of sound in solid atom hydrogen is close to the theoretical core.
“Sound waves are also of interest to material scientists because sound waves are related to important elastic properties, including the ability to resist stress,” Packard said.

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