absolute temperature

简明释义

绝对温度

英英释义

例句

1.At zero absolute temperature 绝对温度, all molecular motion theoretically stops.

在零绝对温度下，所有分子运动理论上停止。

2.To convert Celsius to absolute temperature 绝对温度, you need to add 273.15.

要将摄氏度转换为绝对温度，需要加上273.15。

3.The absolute temperature 绝对温度 of space is approximately 2.7 Kelvin.

太空的绝对温度大约是2.7开尔文。

4.In physics, absolute temperature 绝对温度 is measured in Kelvin.

在物理学中，绝对温度以开尔文为单位进行测量。

5.The concept of absolute temperature 绝对温度 is crucial in thermodynamics.

绝对温度的概念在热力学中至关重要。

作文

Understanding the concept of absolute temperature is essential for anyone studying physics or thermodynamics. The term refers to a temperature measurement that starts from absolute zero, which is the point at which all molecular motion ceases. In the Kelvin scale, absolute temperature is measured in Kelvin (K), with absolute zero being 0 K, equivalent to -273.15 degrees Celsius. This foundational concept plays a crucial role in various scientific fields, including chemistry, engineering, and astronomy.The significance of absolute temperature lies in its ability to provide a standardized measurement for temperature that is independent of the properties of any specific substance. Unlike the Celsius or Fahrenheit scales, which are based on specific physical phenomena (like the freezing and boiling points of water), the Kelvin scale is derived from the laws of thermodynamics. This makes absolute temperature particularly useful in scientific calculations and experiments.One of the key applications of absolute temperature is in the ideal gas law, which states that the pressure of a gas is directly proportional to its temperature when volume is held constant. The equation is expressed as PV = nRT, where P represents pressure, V is volume, n is the number of moles of gas, R is the ideal gas constant, and T is the absolute temperature. Understanding this relationship helps scientists predict how gases will behave under different conditions, making it invaluable in fields such as meteorology and engineering.Moreover, absolute temperature is critical in understanding thermal energy and heat transfer. According to the second law of thermodynamics, heat naturally flows from areas of higher temperature to areas of lower temperature. By using absolute temperature, scientists can quantify this flow of energy more accurately. For instance, when calculating the efficiency of heat engines, engineers must consider the absolute temperature of both the hot and cold reservoirs. This leads to a better understanding of how to optimize energy use in various applications, from power plants to automotive engines.In addition to its practical applications, the concept of absolute temperature also has philosophical implications. It challenges our perception of temperature as a relative measure. When we say something is hot or cold, we often refer to our sensory experiences, which can vary widely from person to person. However, by grounding temperature in the concept of absolute temperature, we establish a universal standard that transcends individual experiences. This shift in perspective encourages a more scientific approach to understanding the physical world.As we continue to explore the universe, the relevance of absolute temperature becomes even more pronounced. In astrophysics, for example, the temperatures of celestial bodies are often expressed in Kelvin. This allows for a consistent comparison of thermal properties across different environments, from the scorching surface of the sun to the frigid expanses of space. Understanding the absolute temperature of these objects can provide insights into their composition, behavior, and evolution.In conclusion, the concept of absolute temperature is a fundamental aspect of modern science that plays a vital role in various disciplines. Its ability to provide a standardized measurement of temperature enhances our understanding of physical phenomena, from the behavior of gases to the efficiency of heat engines. As we push the boundaries of knowledge in physics and beyond, the importance of absolute temperature will undoubtedly continue to grow, guiding us toward deeper insights into the nature of the universe.

理解绝对温度的概念对于任何学习物理或热力学的人来说都是至关重要的。这个术语指的是一种温度测量，从绝对零度开始，绝对零度是所有分子运动停止的点。在开尔文温标中，绝对温度以开尔文（K）为单位测量，绝对零度为0 K，相当于-273.15摄氏度。这个基础概念在化学、工程和天文学等多个科学领域中发挥着至关重要的作用。绝对温度的重要性在于它能够提供一种独立于任何特定物质属性的标准化温度测量。与基于特定物理现象（如水的冰点和沸点）的摄氏度或华氏度不同，开尔文温标源自热力学定律。这使得绝对温度在科学计算和实验中尤为有用。绝对温度的一个关键应用是在理想气体定律中，该定律指出，在体积保持不变的情况下，气体的压力与其温度成正比。该方程表示为PV = nRT，其中P代表压力，V是体积，n是气体的摩尔数，R是理想气体常数，T是绝对温度。理解这种关系帮助科学家预测气体在不同条件下的行为，使其在气象学和工程等领域中不可或缺。此外，绝对温度对于理解热能和热传递也至关重要。根据热力学第二定律，热量自然从高温区域流向低温区域。通过使用绝对温度，科学家可以更准确地量化这种能量的流动。例如，在计算热机的效率时，工程师必须考虑热源和冷源的绝对温度。这使我们更好地理解如何优化各种应用中的能源使用，从发电厂到汽车发动机。除了实际应用外，绝对温度的概念还具有哲学意义。它挑战了我们对温度作为相对测量的看法。当我们说某样东西是热的或冷的时候，我们通常是指我们的感官体验，而这些体验因人而异。然而，通过将温度建立在绝对温度的概念上，我们建立了一种超越个体经验的普遍标准。这种视角的转变鼓励我们以更科学的方式理解物理世界。随着我们继续探索宇宙，绝对温度的相关性变得更加明显。例如，在天体物理学中，天体的温度通常以开尔文表示。这允许我们在不同环境之间进行一致的热属性比较，从炽热的太阳表面到寒冷的太空广袤。理解这些物体的绝对温度可以提供关于它们的组成、行为和演化的见解。总之，绝对温度的概念是现代科学的一个基本方面，在各个学科中发挥着重要作用。它提供的标准化温度测量增强了我们对物理现象的理解，从气体的行为到热机的效率。随着我们推动物理及其他领域的知识边界，绝对温度的重要性无疑会继续增长，引导我们深入洞察宇宙的本质。