Matter,that is Atoms,vibrate, move.All atoms do not vibrate in the same Frequency just as the components light,VIBGYOR do not have the same Frequency. Higher the frequency, the Light becomes invisible at the higher band, Ultraviolet.Lower the frequency, they become Infra Red. Both are not visible to naked eyes.
There are numerous people Perceiving the same Object. But to each one of them it is different.So multitude of Perception Is. If , and there are,more Objects to be Perceived by Many people,there are / will be many Perceptions. Possibly we can not count them. That is Infinity.
Wherever Shiva is present Devi is there and wherever Devi is present Shiva IS.
In Tantra one finds an amalgam of all four yoga.
And there are three processes to Realize self through Sound ,the fundamental principle of the Universe and Abstract Thought.
Yantra,Geometrical patterns to facilitate abstract thinking to still Chitta and
Tantra, an amalgam of all yoga and the above two.
In tantric meditation, inner bliss can be obtained by arousing energy latent in humankind, and uniting it with Shiva. Tantra uplifts consciousness in order to embrace the cosmic spirit.
Aspects of divinity Shiva and Shakti, play creates the entire universe.