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 service number is an identification code used to identify a person within a large group. Service numbers are most often associated with the military; however, they may be used in civilian term as well. Social Security Numbers may be seen as types of service numbers.ntil 2007 and the introduction of the Joint Personnel Administration (JPA) system, Army Officers were issued with a six-digit service number. Newly commissioned officers now receive an 8-digit service number, but 6-digit Officers' numbers issued prior to the introduction of JPA remained unchanged.