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- Critical_radius abstract "Critical radius is the minimum size that must be formed by atoms or molecules clustering together (in a gas, liquid or solid matrix) before a new-phase inclusion (a bubble, a droplet, or a solid particle) is stable and begins to grow. Formation of such stable "nuclei" is called nucleation. In precipitation models this is generally a prelude to models of the growth process itself. Sometimes precipitation is rate-limited by the nucleation process. This happens for example before one takes a cup of superheated water from a microwave and, when jiggling it against dust particles on the wall of the cup, enables "heterogeneous" nucleation that then rapidly converts much of that water into steam.If the change in phase forms a crystalline solid in a liquid matrix, the atoms might then form a dendrite. The crystal growth continues in three dimensions, the atoms attaching themselves in certain preferred directions, usually along the axes of a crystal, forming a characteristic tree-like structure of a dendrite.Example: the critical radius for spheric-like dendride in an ideal system can be determined from its Gibbs free energywhere is the Gibbs volume energy and is the interfacial energy. The critical radius is found by setting the derivative of equal to zeroyielding,where is the surface energy, and is Gibbs energy per volume.".
- Critical_radius wikiPageID "2331297".
- Critical_radius wikiPageRevisionID "526906915".
- Critical_radius hasPhotoCollection Critical_radius.
- Critical_radius subject Category:Critical_phenomena.
- Critical_radius subject Category:Phase_transitions.
- Critical_radius type CriticalPhenomena.
- Critical_radius type NaturalProcess113518963.
- Critical_radius type PhaseChange113536016.
- Critical_radius type PhaseTransitions.
- Critical_radius type Phenomenon100034213.
- Critical_radius type PhysicalEntity100001930.
- Critical_radius type Process100029677.
- Critical_radius comment "Critical radius is the minimum size that must be formed by atoms or molecules clustering together (in a gas, liquid or solid matrix) before a new-phase inclusion (a bubble, a droplet, or a solid particle) is stable and begins to grow. Formation of such stable "nuclei" is called nucleation. In precipitation models this is generally a prelude to models of the growth process itself. Sometimes precipitation is rate-limited by the nucleation process.".
- Critical_radius label "Critical radius".
- Critical_radius sameAs m.074b63.
- Critical_radius sameAs Q5186752.
- Critical_radius sameAs Q5186752.
- Critical_radius sameAs Critical_radius.
- Critical_radius wasDerivedFrom Critical_radius?oldid=526906915.
- Critical_radius isPrimaryTopicOf Critical_radius.