Three related abilities may be used in clairvoyant psychic readings: 1  Clairvoyance, or the ability to see clearly. 2  Clairaudience, or clear hearing.  Clairsentience, or clear feeling (physical or emotional), also known as clear knowing.
In optics, dispersion is the phenomenon in which the phase velocity of a wave depends on its frequency. Media having this common property may be termed dispersive media. Sometimes the term chromatic dispersion is used for specificity.
colloidal system. (Also called colloidal dispersion, colloidal suspension.) An intimate mixture of two substances, one of which, called the dispersed phase (or colloid), is uniformly distributed in a finely divided state through the second substance, called the dispersion medium (or dispersing medium).