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<p>The physical concept of structure-phase states of a&#xa0;liquid low stable to external impacts is developed. The concept should promote understanding of physics of various observable effects in water and aqueous solutions, including the Epstein effect established recently in an experiment on the study of impacts of temperature, mechanical shaking, etc. on physical and chemical properties of highly diluted solutions. In particular, this approach allows the role of external impacts in the Epstein effect to be explained. Our analysis of low stable thermodynamic states of a&#xa0;physical system allows us to propose an adequate mechanism of system transition to a&#xa0;new structure-phase state under a&#xa0;weak external impact. In this case, despite minimal external influence, the system can undergo a&#xa0;significant structural or phase change due to inherent differences in symmetry between its initial and final states, even if those states are thermodynamically similar. The physical reasons for a&#xa0;weak external impact on the transition to the new structure-phase state are discussed.</p>

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Joint impact of temperature and pressure on the state of a liquid

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • A. I. Potekaev,
  • V. V. Obukhov

摘要

The physical concept of structure-phase states of a liquid low stable to external impacts is developed. The concept should promote understanding of physics of various observable effects in water and aqueous solutions, including the Epstein effect established recently in an experiment on the study of impacts of temperature, mechanical shaking, etc. on physical and chemical properties of highly diluted solutions. In particular, this approach allows the role of external impacts in the Epstein effect to be explained. Our analysis of low stable thermodynamic states of a physical system allows us to propose an adequate mechanism of system transition to a new structure-phase state under a weak external impact. In this case, despite minimal external influence, the system can undergo a significant structural or phase change due to inherent differences in symmetry between its initial and final states, even if those states are thermodynamically similar. The physical reasons for a weak external impact on the transition to the new structure-phase state are discussed.