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.
Service Number. A Service Number is a numerical designation given to each member of the UNSC military as a means of identification. Note that some service numbers of members of ONI and the SPARTANs are classified for security purposes.