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There are two opposite tendencies in literature, according to Italo Calvino: “One tries to make language into a weightless element that hovers above things like a cloud. … The other tries to give language the weight, density and concreteness of things, bodies and sensations.”

All the notions involved in Archimedes’ physics are directly evident and evidently logical – weight, density, geometrical form, while in Einstein’s physics the fundamentals do not have to be evident, – their validations are results of the whole scientific enterprise.

Weight, density and diameter are the three critical qualities that determine how far and fast objects thrown with an equal force will travel.

Others, again, scorned superstition, and entertained merely practical misgivings concerning the weight, density, and temperature of the comet, lest the eccentric aerial wanderer should run amuck of the earth in some confusion touching the right of way through space.

To properly understand the science of chemistry we must study the valence of the atom which determines the power of combination of the various elements, together with other niceties, such as atomic weight, density, etc.