blackbody

简明释义

英[ˈblækbɒdi]美[ˈblækˈbɑːdi]

n. 黑体（全部吸收辐射能的物体）

复 数 b l a c k b o d i e s

英英释义

单词用法

同义词

反义词

例句

1.Blackbody radiation always is the result of a succession of emission and absorption processes.

黑体辐射总是一系列发射和吸收过程的综合结果。

2.The nonpolariton system constitutes free thermal radiation in the Kerr nonlinear blackbody.

在克尔非线性黑体中非极化激元系统包含了自由的热辐射。

3.This article deduces the distribution formula of blackbody radiation by using thermodynamics potential formula from the definition formula of average particle number.

本文从平均粒子数定义式出发，利用热力势公式推出了黑体辐射的分布公式。

4.The experimental results show that this blackbody source can be used in the radiometric calibration of remote sensing detectors.

性能测试结果表明，该黑体辐射源可用于遥感探测器中的红外辐射定标。

5.The physical principle of infrared measuring temperature is blackbody radiation law.

红外测温的物理基础是黑体辐射定律。

6.The paper describes the blackbody with adjustable temperature at about 500K, which was made in 1980. It is used for the calibration of the IR telescope and IR detection system.

本文介绍我们在1980年完成的500K可调黑体炉，它主要用于红外望远镜和红外探测系统定标。

7.A perfect blackbody 黑体 absorbs all incident electromagnetic radiation.

一个完美的黑体吸收所有入射的电磁辐射。

8.The concept of a blackbody 黑体 is crucial for understanding thermal radiation.

理解热辐射时，黑体的概念至关重要。

9.In physics, a blackbody 黑体 is an idealized physical body that reflects no light.

在物理学中，黑体是一个理想化的物理体，不反射任何光。

10.A blackbody 黑体 emits radiation according to its temperature, as described by Planck's law.

黑体根据其温度发出辐射，这由普朗克定律描述。

11.Scientists often use a blackbody 黑体 model to simplify the study of radiation.

科学家们常常使用黑体模型来简化对辐射的研究。

作文

In the realm of physics, the concept of a blackbody is fundamental to our understanding of thermal radiation. A blackbody is an idealized physical object that absorbs all incoming radiation, regardless of frequency or angle of incidence. This means that a perfect blackbody does not reflect or transmit any light; instead, it converts all electromagnetic radiation into heat. The significance of a blackbody lies in its ability to serve as a reference point for the emission of thermal radiation. According to Planck's law, a blackbody emits radiation at a characteristic spectrum that depends solely on its temperature. This relationship is crucial for various applications in science and engineering, from understanding stellar phenomena to developing technologies such as infrared cameras.The concept of a blackbody was first introduced by scientists in the 19th century, including Gustav Kirchhoff, who formulated the idea that a good emitter of radiation is also a good absorber. This led to the development of the blackbody radiation theory, which describes how objects emit radiation based on their temperature. The most famous result of this theory is Wien's displacement law, which states that the wavelength at which the emission of a blackbody spectrum is maximized is inversely proportional to the temperature of the body. This means that as the temperature increases, the peak wavelength shifts to shorter wavelengths, explaining why hotter objects appear blue and cooler objects appear red.Understanding the properties of a blackbody is essential in various fields. For instance, in astronomy, stars can be approximated as blackbodies. By studying the light emitted from stars, astronomers can determine their temperatures and compositions. This information is vital for understanding the lifecycle of stars and the dynamics of galaxies. Moreover, in climate science, the Earth can be modeled as a blackbody to study its energy balance and the effects of greenhouse gases. This modeling helps scientists predict climate change and its impacts on the planet.In technology, the principles of blackbody radiation are applied in the design of thermal imaging devices. These devices detect the infrared radiation emitted by objects, allowing us to see in the dark or identify heat leaks in buildings. The efficiency of these devices often relies on their calibration against a known blackbody, ensuring accurate temperature readings.In conclusion, the concept of a blackbody is more than just a theoretical construct; it is a vital component of modern physics and engineering. Its unique properties allow scientists and engineers to explore the nature of light and heat, leading to advancements in various fields. Understanding the behavior of a blackbody helps us grasp the complexities of the universe, from the stars above to the technology we use every day. As we continue to study and apply the principles of blackbody radiation, we unlock new possibilities for innovation and discovery, making it an enduring topic of interest in the scientific community.

在物理学领域，黑体的概念是我们理解热辐射的基础。黑体是一个理想化的物理对象，它吸收所有入射辐射，无论频率或入射角。这意味着一个完美的黑体不会反射或透射任何光；相反，它将所有电磁辐射转化为热量。黑体的重要性在于它能够作为热辐射发射的参考点。根据普朗克定律，黑体以仅依赖于其温度的特征光谱发射辐射。这种关系对于科学和工程中的各种应用至关重要，从理解恒星现象到开发红外摄像机等技术。黑体的概念最早是在19世纪由包括古斯塔夫·基尔霍夫在内的科学家们提出的，他提出了一个好的辐射发射体也是一个好的吸收体的观点。这导致了黑体辐射理论的发展，该理论描述了物体如何根据其温度发射辐射。这个理论中最著名的结果是维恩位移定律，该定律表明，黑体光谱发射的最大波长与物体的温度成反比。这意味着随着温度的升高，峰值波长会向短波长移动，解释了为什么更热的物体看起来是蓝色，而较冷的物体看起来是红色。理解黑体的性质对多个领域至关重要。例如，在天文学中，恒星可以被近似为黑体。通过研究恒星发出的光，天文学家可以确定它们的温度和组成。这些信息对于理解恒星的生命周期和星系的动态至关重要。此外，在气候科学中，地球可以被建模为黑体，以研究其能量平衡和温室气体的影响。这种建模帮助科学家预测气候变化及其对地球的影响。在技术方面，黑体辐射的原理被应用于热成像设备的设计。这些设备检测物体发出的红外辐射，使我们能够在黑暗中看到或识别建筑物中的热泄漏。这些设备的效率通常依赖于其与已知黑体的校准，从而确保准确的温度读数。总之，黑体的概念不仅仅是一个理论构造；它是现代物理学和工程学的重要组成部分。其独特的性质使科学家和工程师能够探索光和热的本质，从而推动各个领域的进步。理解黑体的行为帮助我们掌握宇宙的复杂性，从头顶的星星到我们每天使用的技术。随着我们继续研究和应用黑体辐射的原理，我们为创新和发现开启了新的可能性，使其成为科学界一个持久的研究主题。