Besides it covers full range of temperature and has simple relation with microscopic quantities like the average kinetic energy of particles (see equipartition theorem).

Potassium is quite rare, and the heavy odd-numbered elements (gold, silver, copper) appear only in microscopic quantities and never in the elemental form.

This provides us with a method for calculating the expected values of many microscopic quantities.

Pure DNA was sold for research purposes, but only in microscopic quantities, hardly a mouthful.

An experiment only sees a microscopic quantity if it can be transferred by a series of events to the classical devices that surround the experimental chamber.

The detectors look for microscopic quantities of explosives inside and outside a bag that are presumed to be present if it contains a bomb.

The new reaction was tried with microscopic quantities of material, and it only destroyed everything within a fifty-yard radius.

It contains microscopic quantities of a mercury-containing preservative called thimerosal.

Even a microscopic quantity of the dust was sufficient to cause death.

Astatine is only produced in microscopic quantities, with modern techniques allowing production runs of 2 terabecquerels (about 25 micrograms).