15/10/2020
“Sound waves travel through different mediums at different speeds. A study, published in the journal Science Advances, shows that predicting the upper limit of the same is possible and is dependent on two dimensionless fundamental constants: the fine structure constant, measure of the strength of the electromagnetic force that governs how electrically charged elementary particles, and the proton-to-electron mass ratio.
The scientists tested one specific prediction of their theory that the speed of sound should decrease with the mass of the atom which implies that the sound is the fastest in solid atomic hydrogen. However, hydrogen is an atomic solid at pressure comparable to those in the core of planets like Jupiter.Hence, researchers performed first principal computations to test this prediction and found that the speed of sound in solid atomic hydrogen is close to the theoretical fundamental limit which is 36 km/s,
around twice as fast as the speed of sound in diamond
Read the Paper : https://advances.sciencemag.org/content/6/41/eabc866
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