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produces heat or gives the feeling of heat. In this case penetration of Pudgala particles and their emission, both are very brisk or vigorous.
In each and every substance, while in its natural and balanced state-the vacant spaces are fixed between any two or any set or sets of constituting Pudgala, inside the molecular or atomic structure of that particular substance. It seems that these fixed distances or vacuum spaces, between two "Pudgalas”, keep or maintain their constancy even after there is an infusion of extra Pudgala particles through heating, as it is said, and because of this there is always an expansion in any substance or mass when heated. So it proves that the space occupied by any one Pudgala particle, in its natural state, is always constant and the same, as is propounded in the Jain philosophy. This is true as far as the structure within any atom is concerned. It may be that the entering heat Pudgala replaces some other Pudgala and so the scientists say that heat has no weight. Future experiments may give some better clue. Various and different atoms or molecules must be having different expanse of space due to difference in their structure and this is the reason for differences
