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.
Historically, the term referred to special military units controlled by the military intelligence service GRU (Spetsnaz GRU). It also describes special purpose units, or task forces of other ministries (such as the Ministry of Emergency Situations' special rescue unit) in post-Soviet countries.