Science / Chemistry / Phase: 1.A phase is a part of a sample of matter that is in contact with other parts but is separate from them. Properties within a phase are homogeneous (uniform). For example, oil and vinegar salad dressing contains two phases: an oil-rich liquid, and a vinegar-rich liquid. Shaking the bottle breaks the phases up into tiny droplets, but there are still two distinct phases. 2. In wave motion, phase is the fraction of a complete cycle that has passed a fixed point since the current cycle began. The phase is often expressed as an angle, since a full cycle is 360^deg; (2 pi). Two waves are 'in phase' if the peaks of one wave align with the peaks of the other; they are 'out of phase' if the peaks of one wave align with the troughs of the other.
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Phase Noun Synonyms: stage, period, development, step
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Science / Chemistry / Phase Diagram: A map that shows which phases of a sample are most stable for a given set of conditions. Phases are depicted as regions on the map; the borderlines between regions correspond to conditions where the p MORE
Science / Tides and Currents / Age Of Phase Inequality: The time interval between new or full Moon and the maximum effect of these phases upon range of tide or speed of the tidal current. This age may be computed from the harmonic constants by the formula: MORE
Science / Chemistry / Phase Change: A change in the state of a sample of matter; for example, solid to liquid or liquid to gas. Phase changes are considered physical rather than chemical changes. MORE