Colors can be measured and quantified in various ways; indeed, a person's perception of colors is a subjective process whereby the brain responds to the stimuli that are produced when incoming light reacts with the several types of cone cells in the eye.
unit of service. unit of service. any individual, family, aggregate, organization, or community given nursing care. The level at which service is delivered varies with the particular unit entity.
A squad is the second-smallest military unit of organization, consisting of a squad leader and around a dozen soldiers under his command (depending on the country). A squad may further be subdivided into fireteams (the smallest military unit) of about four soldiers each.