Why is traveling better with the wind?

You may have noticed that you can hear the sound better if it comes from downwind rather than on the wind. We assume that it is because the wind "pushes noise". Unfortunately, for our intuition, it is easy to prove that this force is too small to match the observed effect. If a typical wind blows at a speed of 30 mph, it is only 4% of the sound speed, which means that the wind can shorten or increase the distance that the sound must travel by the amount. The difference would be too fine to detect the human ear, so it obviously does not reveal the source of the phenomenon. Due to viscosity, wind speed near Earth is actually slower than speed at higher altitudes. The precipitation between air and countries molecules cause turbulence effects that prevents the transmission of waves along Tje's air level so quickly.

If the air has an uniform temperature, a change in viscosity with an altitude causes a ZVThe ukova wave accelerates along the upper layers of the air. This causes the wool to fold down, which is more audible for the human listener. This redirection-phenomenon is called quarry. When the wool moves against the wind, the slap is in the opposite direction - up. In fact, if you hovered above the ground in the area up from the source, you would hear the sound quite clearly, because of the reflection of the waves in the direction.

In an area with even temperature and without wind, sound waves always move out at the same speeds from the source. As we have seen, this is not always the case.