Randomization of Energy and Momentum in Statistical Mechanics

• 作者: V. V. Paranjape
• 来源期刊: 现代物理(英文)
• 学科: 医学
• 关键词: PARTICLE Distribution COOLING Liquids Electrical FIELD IMBALANCE
• 年，卷（期）: 2015,（15）
• 页码范围: 2198-2201
• 页数: 4页
• 分类号: R73

摘要

Particle-particle collisions in materials give rise to a particle distribution in energy and momentum in such a way that a most probable distribution is realized. I will show that an evaporating liquid generates a molecular imbalance in the equilibrium energy distribution. The molecular collisions by their inherent nature are able to repair the imbalance and in so doing it is shown that the liquids cool down. Similarly an external electric field creates substantial imbalance in the momentum distribution for the electrons in ionic semiconductors. Electron-electron collisions are able to restore the imbalance and as a consequence, similar to the evaporating liquid, the electron gas loses thermal energy and cools down.