what is the einstein's explanation about velocity of sound in air?

Answer 1

I wasn't aware that Einstein ever did any significant work in acoustics.

Or do you have acoustic waves confused with electromagnetic waves?


Doug

Answer 2

The velocity of sound in air (or in any medium) is very slow compared with the velocity of light, and so sound is not said to be in a "relativistic speed". Objects travelling close to the speed of light, such as protons at CERN and electrons at the SLAC, are said to be at "relativistic speeds". When an object travels at relativistic speeds ,the effect of it's speed is great. When an object moves slowly, like cars, planes, people, and sound, the effect is minimal and classical dynamics can be used.

Answer 3

Albert Einstein (German pronunciation (help·info)) (March 14, 1879 – April 18, 1955) was a German-born theoretical physicist widely known as one of the greatest physicists of all time.[1][2] He formulated the special and general theories of relativity. In addition, he made significant advancements to quantum theory and statistical mechanics. While best known for the Theory of Relativity (and specifically mass-energy equivalence, E=mc2), he was awarded the 1921 Nobel Prize for Physics for his 1905 (his "wonderful year" or "miraculous year") explanation of the photoelectric effect and "for his services to Theoretical Physics". In popular culture, the name "Einstein" has become synonymous with great intelligence and genius.

Among his many investigations were: capillary action, his special theory of relativity which stemmed from an attempt to reconcile the laws of mechanics with the laws of the electromagnetic field, his general theory of relativity which extended the principle of relativity to include gravitation, relativistic cosmology, critical opalescence, classical problems of statistical mechanics and problems in which they were merged with quantum theory, including an explanation of Brownian motion, atomic transition probabilities, the probabilistic interpretation of quantum theory, the quantum theory of a monatomic gas, the thermal properties of light with a low radiation density which laid the foundation of the photon theory of light, the theory of radiation, including stimulated emission, the construction of a unified field theory, and the geometrization of physics.