degree kelvin

简明释义

开耳芬温度

英英释义

例句

1.The absolute zero point is defined as 0 degree kelvin.

绝对零度被定义为0 开尔文度。

2.Scientists often use degree kelvin for thermodynamic calculations.

科学家通常在热力学计算中使用开尔文度。

3.In space, the background temperature is about 2.7 degree kelvin.

在太空中，背景温度约为2.7 开尔文度。

4.The temperature of the water boiled at 373.15 degree kelvin.

水的沸点为373.15 开尔文度。

5.To convert Celsius to degree kelvin, you need to add 273.15.

要将摄氏度转换为开尔文度，需要加上273.15。

作文

Understanding temperature is fundamental in both science and everyday life. One of the most important units of measurement for temperature is the degree kelvin, which is used primarily in the fields of physics and engineering. The degree kelvin is a unit of temperature that is part of the International System of Units (SI). It is named after the Scottish physicist William Thomson, 1st Baron Kelvin, who contributed significantly to the understanding of thermodynamics. Unlike degrees Celsius or Fahrenheit, the degree kelvin does not have a negative value, as it starts from absolute zero, the point at which all molecular motion stops. This makes it particularly useful in scientific calculations where absolute temperatures are necessary.In practical terms, the degree kelvin is defined such that 0 K corresponds to -273.15 degrees Celsius. This relationship means that to convert from Celsius to Kelvin, one simply adds 273.15. For example, if the temperature is 25 degrees Celsius, this can be converted to Kelvin by adding 273.15, resulting in 298.15 K. This conversion is crucial in many scientific applications, including chemistry and physics, where precise measurements are essential.The degree kelvin is often used in scientific research, particularly in the fields of cryogenics and thermodynamics. In cryogenics, scientists study materials at extremely low temperatures, often measured in degrees kelvin. Understanding how materials behave at these temperatures is vital for developing new technologies, such as superconductors, which can conduct electricity without resistance when cooled to very low temperatures. Furthermore, the degree kelvin is also used in astrophysics. For instance, the temperature of stars can be expressed in degrees kelvin. The surface temperature of our sun is approximately 5,500 K, while some of the hottest stars can reach temperatures of over 40,000 K. This allows astronomers to classify stars and understand their properties based on their temperatures.In addition to its scientific applications, the degree kelvin is increasingly becoming relevant in the field of technology, especially in the development of LED lighting. The color temperature of LED lights is often described in degrees kelvin, indicating whether the light appears warm or cool. For example, a light bulb rated at 3000 K emits a warm white light, whereas one rated at 6000 K emits a cooler, bluish light. This has significant implications for interior design and energy efficiency, as the choice of lighting can influence mood and productivity.In conclusion, the degree kelvin is a critical unit of measurement that plays a vital role in various scientific and technological fields. Its unique properties, such as starting from absolute zero and being devoid of negative values, make it indispensable for accurate temperature measurements. Whether in the realm of physics, chemistry, or even lighting technology, understanding the degree kelvin is essential for anyone interested in the sciences or related fields. As we continue to explore the universe and develop new technologies, the significance of the degree kelvin will only grow, further highlighting its importance in our understanding of the world around us.

理解温度在科学和日常生活中是基本的。温度测量中最重要的单位之一是开尔文度，它主要用于物理和工程领域。开尔文度是国际单位制(SI)中的温度单位。它以苏格兰物理学家威廉·汤姆森，第一个开尔文勋爵的名字命名，他对热力学的理解做出了重要贡献。与摄氏度或华氏度不同，开尔文度没有负值，因为它从绝对零度开始，这是所有分子运动停止的点。这使得它在需要绝对温度的科学计算中非常有用。在实际应用中，开尔文度的定义为0 K对应于-273.15摄氏度。这种关系意味着，要将摄氏度转换为开尔文度，只需加上273.15。例如，如果温度为25摄氏度，可以通过加上273.15将其转换为开尔文度，结果为298.15 K。这种转换在许多科学应用中至关重要，包括化学和物理学，其中精确的测量是必不可少的。开尔文度通常用于科学研究，特别是在低温物理学和热力学领域。在低温物理学中，科学家研究材料在极低温度下的行为，这些温度通常用开尔文度来测量。了解材料在这些温度下的行为对于开发新技术至关重要，例如超导体，当其冷却到非常低的温度时，可以无阻力地导电。此外，开尔文度在天体物理学中也被使用。例如，恒星的温度可以用开尔文度来表示。我们太阳的表面温度约为5500 K，而一些最热的恒星的温度可以超过40000 K。这使天文学家能够根据恒星的温度对其进行分类并理解其特性。除了科学应用，开尔文度在技术领域也越来越相关，特别是在LED照明的发展中。LED灯的色温通常用开尔文度来描述，指示光线是暖色还是冷色。例如，标称为3000 K的灯泡发出暖白光，而标称为6000 K的灯泡则发出更冷的蓝光。这对室内设计和能效有重要影响，因为灯光的选择会影响情绪和生产力。总之，开尔文度是一个关键的测量单位，在各种科学和技术领域发挥着重要作用。它的独特属性，如从绝对零度开始且没有负值，使其在准确的温度测量中不可或缺。无论是在物理学、化学还是照明技术领域，理解开尔文度对于任何对科学或相关领域感兴趣的人来说都是必不可少的。随着我们继续探索宇宙并开发新技术，开尔文度的重要性将只会增加，进一步突显其在我们理解周围世界中的重要性。