Kelvin scale

简明释义

绝对温标

英英释义

例句

1.Scientists often use the Kelvin scale when measuring temperatures in space.

科学家在测量太空温度时常常使用开尔文温标。

2.Water freezes at 273.15 K on the Kelvin scale.

水在开尔文温标上于273.15 K结冰。

3.The temperature of absolute zero is 0 on the Kelvin scale, which means all molecular motion stops.

绝对零度在开尔文温标上为0，这意味着所有分子运动停止。

4.The Kelvin scale is commonly used in scientific research to avoid negative temperatures.

开尔文温标在科学研究中常被使用，以避免负温度。

5.When converting Celsius to Kelvin scale, you add 273.15.

将摄氏度转换为开尔文温标时，你需要加上273.15。

作文

The Kelvin scale is one of the most important temperature scales used in the scientific community. It is named after the Scottish physicist William Thomson, 1st Baron Kelvin, who made significant contributions to thermodynamics and the understanding of absolute temperature. The Kelvin scale is unique because it starts at absolute zero, which is defined as 0 K. This point represents the lowest possible temperature, where all molecular motion ceases. Unlike the Celsius and Fahrenheit scales, which are based on arbitrary points, the Kelvin scale provides a direct measurement of thermal energy. In practical terms, the Kelvin scale is essential for scientists and engineers working in fields such as physics, chemistry, and engineering. For example, when conducting experiments involving gases, researchers often need to calculate the behavior of gas particles at different temperatures. Using the Kelvin scale simplifies these calculations, as it aligns with the principles of gas laws, where temperature must be expressed in absolute terms. Moreover, the Kelvin scale is widely used in astronomy. Stars and other celestial bodies emit light that can be analyzed to determine their temperature. By measuring the spectrum of light emitted by a star, astronomers can convert this data into a temperature reading on the Kelvin scale. This information is crucial for understanding the life cycle of stars and the universe's evolution. Another important aspect of the Kelvin scale is its application in cryogenics, the study of materials at extremely low temperatures. In this field, researchers work with substances that exist close to absolute zero. The Kelvin scale allows them to accurately measure and manipulate these temperatures, which is vital for experiments involving superconductivity and quantum mechanics. In addition to its scientific applications, the Kelvin scale has also found its way into everyday life. For instance, the color temperature of light sources, such as LED bulbs, is often measured in Kelvins. A lower color temperature (around 2700 K) produces a warm, yellowish light, while a higher color temperature (around 6500 K) emits a cooler, bluish light. Understanding the Kelvin scale helps consumers choose the right lighting for their homes and workplaces. In conclusion, the Kelvin scale is an indispensable tool in various scientific and practical applications. Its foundation on absolute zero makes it a reliable and consistent method for measuring temperature. Whether in the laboratory, the cosmos, or our daily lives, the Kelvin scale plays a crucial role in our understanding of the physical world. As technology advances and new discoveries are made, the importance of the Kelvin scale will undoubtedly continue to grow, further cementing its place in the annals of science and engineering.

开尔文温度计是科学界使用的最重要的温度计之一。它以苏格兰物理学家威廉·汤姆森，开尔文勋爵的名字命名，他对热力学和绝对温度的理解做出了重要贡献。开尔文温度计的独特之处在于它从绝对零度开始，这被定义为0 K。这个点代表了可能的最低温度，所有分子运动都停止。与基于任意点的摄氏度和华氏度不同，开尔文温度计提供了热能的直接测量。在实际应用中，开尔文温度计对物理、化学和工程等领域的科学家和工程师至关重要。例如，在进行涉及气体的实验时，研究人员通常需要计算不同温度下气体颗粒的行为。使用开尔文温度计简化了这些计算，因为它与气体法则的原则相一致，温度必须以绝对值表示。此外，开尔文温度计在天文学中被广泛使用。星星和其他天体发射的光可以被分析以确定它们的温度。通过测量星星发出的光谱，天文学家可以将这些数据转换为开尔文温度计上的温度读数。这些信息对于理解恒星的生命周期和宇宙的演变至关重要。开尔文温度计的另一个重要方面是它在低温学中的应用，即研究极低温下的材料。在这个领域，研究人员处理接近绝对零度的物质。开尔文温度计使他们能够准确测量和操纵这些温度，这对涉及超导性和量子力学的实验至关重要。除了科学应用，开尔文温度计还进入了日常生活。例如，光源（如LED灯泡）的色温通常以开尔文为单位测量。较低的色温（约2700 K）产生温暖的黄色光，而较高的色温（约6500 K）发出较冷的蓝色光。理解开尔文温度计有助于消费者选择适合自己家庭和工作场所的照明。总之，开尔文温度计是各种科学和实际应用中不可或缺的工具。它以绝对零度为基础，使其成为一种可靠且一致的温度测量方法。无论是在实验室、宇宙还是我们的日常生活中，开尔文温度计在我们理解物理世界中发挥着至关重要的作用。随着技术的进步和新发现的出现，开尔文温度计的重要性无疑将继续增长，进一步巩固其在科学和工程史上的地位。