Within the Vaiśeṣika vision, the physical world is understood as a vast tapestry woven from eternal, indivisible atoms (paramāṇu), which are regarded as the ultimate material substances. These atoms are partless and imperceptible, yet they are held to be real and enduring, while the composite things that arise from them are transient. Different kinds of atoms correspond to the classical elements—earth, water, fire, and air—and each atom bears specific qualities that ground the properties later observed in gross objects. Thus, what appears as a solid, continuous world is, at a deeper level, an ordered field of atomic realities.

The emergence of perceptible objects is explained through a graded process of atomic combination. Two atoms first unite to form a dyad, and from such dyads arise triads, which are described as the smallest visible units. Through further aggregation of these triads, the familiar objects of experience—bodies, mountains, pots, and so forth—come into being. The qualities of these larger composites are not arbitrary; they are traced back to the inherent qualities of the atoms themselves, expressed through their particular configurations and proportions.

This entire process of combination and separation is not seen as random or purely mechanical. Vaiśeṣika posits an unseen causal principle (adṛṣṭa), often linked with karmic residues, as the guiding force behind the motion, aggregation, and disaggregation of atoms. In some presentations, this ordering is also associated with divine will, so that the cosmos is not merely a heap of particles but a morally and metaphysically structured order. Atoms themselves remain inert and eternal, while the world of change arises from their ever-shifting arrangements under this subtle governance.

From a more reflective standpoint, the physical world is thus viewed as a contingent manifestation of these unchanging atomic substances. Creation and dissolution are interpreted as cycles of aggregation and disaggregation: during cosmic dissolution, composites resolve back into their atomic constituents, and at the dawn of a new cycle, atoms once again combine to form a renewed universe. Although atoms cannot be directly perceived, their existence and nature are inferred from the observable diversity and regularity of the world, which serves as a kind of visible commentary on an invisible, yet rigorously ordered, atomic foundation.