mean free time

简明释义

平均自由飞行时间

英英释义

例句

1.The mean free time can be calculated using the density of the gas and the cross-sectional area of the molecules.

可以通过气体的密度和分子的横截面积来计算平均自由时间。

2.When studying diffusion, scientists often consider the mean free time of particles to understand their movement.

在研究扩散时，科学家们常常考虑粒子的平均自由时间以了解它们的运动。

3.In a gas, the average distance between collisions is related to the mean free time, which is defined as the average time a molecule travels before colliding with another molecule.

在气体中，分子间碰撞的平均距离与平均自由时间有关，它被定义为一个分子在与另一个分子碰撞之前所行驶的平均时间。

4.In plasma physics, understanding the mean free time helps in predicting how particles interact under different conditions.

在等离子体物理中，理解平均自由时间有助于预测粒子在不同条件下的相互作用。

5.The mean free time is crucial in determining the thermal conductivity of gases.

在确定气体的热导率时，平均自由时间是至关重要的。

作文

In the realm of physics, particularly in the study of gases and particles, the concept of mean free time plays a crucial role in understanding how particles interact with one another. The term mean free time refers to the average time interval between successive collisions of a particle as it moves through a medium. This concept is essential for various scientific fields, including thermodynamics, statistical mechanics, and even in the development of technologies like gas lasers and semiconductor devices.To grasp the importance of mean free time, we can consider the behavior of gas molecules in a container. When gas molecules are in motion, they constantly collide with one another as well as with the walls of the container. The mean free time helps us quantify how long a molecule travels before it collides with another molecule. This time interval is influenced by several factors, including the density of the gas and the size of the molecules involved.For instance, in a low-density gas, molecules are spaced further apart, resulting in a longer mean free time since there are fewer opportunities for collisions. Conversely, in a high-density gas, where molecules are packed closely together, the mean free time decreases because the likelihood of collisions increases significantly. Understanding this relationship is vital for predicting how gases behave under different conditions, which is fundamental in fields such as meteorology, aerodynamics, and chemical engineering.The concept of mean free time also extends beyond gases. In condensed matter physics, it can be applied to electrons moving through a solid material. Here, the mean free time indicates how long an electron can travel through the lattice structure of a material before scattering off impurities or defects. This understanding is crucial for designing materials with specific electrical properties, such as semiconductors used in electronic devices.Moreover, the mean free time has practical implications in everyday life. For example, when considering the efficiency of engines or the performance of air conditioning systems, engineers must account for the mean free time of air molecules to optimize their designs. By improving the understanding of how particles move and interact, we can enhance the efficiency of various technologies that rely on these principles.In conclusion, the concept of mean free time is not just an abstract idea confined to the pages of physics textbooks; it is a fundamental principle that influences a wide range of scientific and engineering applications. From predicting the behavior of gases to designing advanced materials, the significance of mean free time cannot be understated. As we continue to explore the intricacies of particle interactions, the mean free time will remain an essential tool for scientists and engineers alike, helping us to unlock new possibilities in technology and our understanding of the natural world.

在物理学的领域，特别是在气体和粒子研究中，平均自由时间的概念在理解粒子如何相互作用方面起着至关重要的作用。术语平均自由时间指的是粒子在介质中移动时，连续碰撞之间的平均时间间隔。这个概念对于热力学、统计力学等多个科学领域是必不可少的，甚至在气体激光器和半导体设备等技术的发展中也发挥着重要作用。要理解平均自由时间的重要性，我们可以考虑气体分子在容器中的行为。当气体分子处于运动状态时，它们不断相互碰撞以及与容器壁碰撞。平均自由时间帮助我们量化一个分子在与另一个分子碰撞之前能移动多长时间。这个时间间隔受多个因素的影响，包括气体的密度和参与碰撞的分子的大小。例如，在低密度气体中，分子之间的距离较远，导致平均自由时间较长，因为碰撞的机会较少。相反，在高密度气体中，由于分子紧密排列，平均自由时间减少，因为碰撞的可能性显著增加。理解这种关系对于预测气体在不同条件下的行为至关重要，这在气象学、空气动力学和化学工程等领域都是基础。平均自由时间的概念也超越了气体。在凝聚态物理学中，它可以应用于电子在固体材料中的运动。在这里，平均自由时间表示电子在晶格结构中移动多长时间之前会因杂质或缺陷而散射。这种理解对于设计具有特定电气性能的材料至关重要，例如用于电子设备的半导体。此外，平均自由时间在日常生活中也有实际意义。例如，在考虑发动机的效率或空调系统的性能时，工程师必须考虑空气分子的平均自由时间以优化他们的设计。通过改善对粒子运动和相互作用的理解，我们可以提高依赖这些原理的各种技术的效率。总之，平均自由时间的概念并不仅仅是局限于物理教科书中的抽象理念；它是一个基本原则，影响着广泛的科学和工程应用。从预测气体行为到设计先进材料，平均自由时间的重要性不容小觑。随着我们继续探索粒子相互作用的复杂性，平均自由时间将继续成为科学家和工程师的重要工具，帮助我们解锁技术和自然世界理解的新可能性。