Earth atmosphere divided into several layers: troposphere-stratosphere-ionosphere-exosphere and so on. This atmosphere of Earth is a layer surrounding the planet Earth that retained by Earth’s gravity.
Our Purāna indicates this layer as ‘Antariksha’, where energy wandered absolutely by propagation of sound.
Ionosphere, includes the thermosphere and parts of mesosphere & exosphere, is a region that always ionized by solar radiation. Ionization depends primarily on the Sun’s activity that signifies light. In addition, this division of the atmosphere into layers mostly differs by temperature, is also such phenomenon where light as well as darkness exists. Today’s science confirms, that ionosphere is a shell of electrons and electrically charged atoms & molecules that surround the Earth. It has a valuable importance because of radio propagation. That means, in no way, there exists anything but sound.
However, being a phenomenon of wave-particle
duality, sounds have no different identity other than light.
In our five sense organs (Pancha-Indriya), eyes work through light. It is that form of cumulative ionization where propagation of sound exists. Accordingly, other sense organs like nose-tongue-skin are working similar to that of propagation, which is sound itself.
