A contemporary quartz watch. Time perception is a field of study within psychology, cognitive linguistics and neuroscience that refers to the subjective experience of time, which is measured by someone's own perception of the duration of the indefinite and unfolding of events.
Cosine, a trigonometric function. COS cells, a cell line used by biologists. Carbonyl sulfide, (COS) a chemical compound. Cobalt sulfide, (CoS) a chemical compound. Class of service (CoS), a 3 bit field within a layer two Ethernet frame header defined by IEEE 802.1p. Class of service (COS), a configuration parameter in legacy telephone systems.
Prefix Names of Covalent Compounds. Covalent compounds are named in different ways than are ionic compounds (although there is some overlap). Many of these compounds have common names such as methane, ammonia and water.However, simple covalent compounds are generally named by using prefixes to indicate how many atoms of each element are shown in the formula.ovalent compounds are named in different ways than are ionic compounds (although there is some overlap). Many of these compounds have common names such as methane, ammonia and water.