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  2. Nucleation - Wikipedia

    en.wikipedia.org/wiki/Nucleation

    Nucleation is a common mechanism which generates first-order phase transitions, and it is the start of the process of forming a new thermodynamic phase. In contrast, new phases at continuous phase transitions start to form immediately. Nucleation is often very sensitive to impurities in the system. These impurities may be too small to be seen ...

  3. Classical nucleation theory - Wikipedia

    en.wikipedia.org/wiki/Classical_nucleation_theory

    Classical nucleation theory (CNT) is the most common theoretical model used to quantitatively study the kinetics of nucleation. [1] [2] [3] [4]Nucleation is the first step in the spontaneous formation of a new thermodynamic phase or a new structure, starting from a state of metastability.

  4. Cloud condensation nuclei - Wikipedia

    en.wikipedia.org/wiki/Cloud_condensation_nuclei

    There are many different types of atmospheric particulates that can act as CCN. The particles may be composed of dust or clay, soot or black carbon from grassland or forest fires, sea salt from ocean wave spray, soot from factory smokestacks or internal combustion engines, sulfate from volcanic activity, phytoplankton or the oxidation of sulfur dioxide and secondary organic matter formed by ...

  5. Crystal growth - Wikipedia

    en.wikipedia.org/wiki/Crystal_growth

    Nucleation can be either homogeneous, without the influence of foreign particles, or heterogeneous, with the influence of foreign particles. Generally, heterogeneous nucleation takes place more quickly since the foreign particles act as a scaffold for the crystal to grow on, thus eliminating the necessity of creating a new surface and the ...

  6. Ice nucleus - Wikipedia

    en.wikipedia.org/wiki/Ice_nucleus

    Ice nucleation mechanisms describe four modes that are responsible for the formation of primary ice crystals in the atmosphere. [clarification needed]An ice nucleus, also known as an ice nucleating particle (INP), is a particle which acts as the nucleus for the formation of an ice crystal in the atmosphere.

  7. My husband and I got engaged in a library. He proposed ... - AOL

    www.aol.com/husband-got-engaged-library-proposed...

    I've known my husband was the person I wanted to marry since we met. He knows me so well and proposed to me in a library without saying a word.

  8. Cash App owner failed to protect customers from fraud, feds say

    www.aol.com/cash-app-owner-failed-protect...

    Cash App-owner Block must offer up to $120 million in refunds to consumers who federal regulators say were exposed to potential fraud.

  9. Crystallization - Wikipedia

    en.wikipedia.org/wiki/Crystallization

    Nucleation is the step where the solute molecules or atoms dispersed in the solvent start to gather into clusters, on the microscopic scale (elevating solute concentration in a small region), that become stable under the current operating conditions. These stable clusters constitute the nuclei.