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Stefan's formula



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Stefan's formula about specific surface energy

Stefan’s formula says that the specific surface energy at a given interface is determined by the respective enthalpy difference \scriptstyle \Delta H^*.

\sigma = \gamma_0 \left( \frac{\Delta H^*}{N_A^{1/3}V_m^{2/3}}\right),

where σ is the specific surface energy, NA is Avogadro's number, γ0 is a steric dimensionless coefficient, and Vm is the molar volume.

References

  • Guencheva, V., Grantscharova, E. & Gutzow, I., Thermodynamic Properties of the Amorphous and Crystalline Modifications of Carbon and the Metastable Synthesis of Diamond, Cryst. Res. Technol., 2001, 36, 1411–1428

Yet another Stefan's formula

Stefan's formula (not to be confused with the Stefan's law) describes the dependence of the thickness of ice cover on freezing temperature.

References

  • McGraw-Hill Encyclopedia of Science & Technology Online
  • Answers.com
 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Stefan's_formula". A list of authors is available in Wikipedia.
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