black body

简明释义

黑体

英英释义

例句

1.A black body (黑体) radiator is used in many scientific experiments to measure temperature accurately.

许多科学实验中使用黑体辐射器来准确测量温度。

2.The emission spectrum of a black body (黑体) depends only on its temperature.

一个黑体的发射光谱仅依赖于其温度。

3.The concept of a black body (黑体) is essential for understanding thermal radiation.

理解热辐射时，黑体的概念是至关重要的。

4.In physics, a perfect black body (黑体) absorbs all incident radiation without reflecting any.

在物理学中，完美的黑体吸收所有入射辐射而不反射任何东西。

5.When heated, a black body (黑体) will emit radiation across a continuous spectrum.

加热后，黑体将会在连续光谱中发射辐射。

作文

In the realm of physics, the concept of a black body is fundamental in understanding how objects emit and absorb radiation. A black body is an idealized physical object that perfectly absorbs all incoming radiation, regardless of frequency or angle of incidence. This means that it does not reflect any light; instead, it converts all incident energy into thermal energy. The importance of a black body lies in its ability to serve as a perfect emitter of radiation when heated. According to Planck's law, the spectral distribution of radiation emitted by a black body depends solely on its temperature, which allows scientists to understand thermal radiation more accurately.One of the most significant implications of the black body concept is seen in the field of astrophysics. Stars, for example, can be approximated as black bodies because they emit radiation across a wide spectrum of wavelengths. By studying the light from stars and comparing it to the theoretical predictions of a black body, astronomers can infer important information about the star's temperature, composition, and distance from Earth. This has led to breakthroughs in our understanding of the universe and the lifecycle of stars.Moreover, the study of black bodies paved the way for the development of quantum mechanics. In the late 19th century, scientists were puzzled by the 'ultraviolet catastrophe,' which arose from classical physics' inability to explain the observed spectrum of radiation emitted by a black body. Max Planck resolved this issue by introducing the idea that energy is quantized, leading to the birth of quantum theory. This revolutionary concept not only changed the course of physics but also had profound implications for various fields, including chemistry and material science.Additionally, black body radiation has practical applications in technology. For instance, infrared thermometers and thermal imaging cameras rely on the principles of black body radiation to measure temperature and visualize heat patterns. These devices are invaluable in numerous industries, including medicine, manufacturing, and environmental monitoring.The concept of a black body also plays a critical role in climate science. The Earth can be approximated as a black body when considering its ability to absorb solar radiation and re-emit it as infrared radiation. Understanding how the Earth behaves as a black body helps scientists model climate change and predict future environmental conditions. This knowledge is essential for developing strategies to mitigate the impacts of global warming and ensure a sustainable future.In conclusion, the notion of a black body is not merely a theoretical construct but a cornerstone of modern physics with far-reaching implications. From astrophysics to quantum mechanics, and from technological applications to climate science, the study of black bodies has significantly advanced our understanding of the natural world. As we continue to explore the mysteries of the universe, the principles associated with black bodies will undoubtedly remain integral to scientific inquiry and innovation.

在物理学领域，黑体的概念对于理解物体如何发射和吸收辐射是基础性的。黑体是一个理想化的物理对象，它完美地吸收所有入射辐射，无论频率或入射角度。这意味着它不反射任何光，而是将所有入射能量转化为热能。黑体的重要性在于它能够作为加热时辐射的完美发射体。根据普朗克定律，黑体发射的辐射的光谱分布仅依赖于其温度，这使科学家能够更准确地理解热辐射。黑体概念的一个重要影响在天体物理学领域得到了体现。例如，恒星可以被近似为黑体，因为它们在广泛的波长范围内发射辐射。通过研究恒星的光并将其与黑体的理论预测进行比较，天文学家可以推断出有关恒星温度、组成和距离地球的重要信息。这导致了我们对宇宙及恒星生命周期理解的突破。此外，黑体研究为量子力学的发展铺平了道路。在19世纪末，科学家们对“紫外灾难”感到困惑，因为经典物理无法解释黑体发射的辐射的观测光谱。马克斯·普朗克通过引入能量量子化的概念解决了这个问题，从而导致了量子理论的诞生。这一革命性概念不仅改变了物理学的进程，还对化学和材料科学等多个领域产生了深远的影响。此外，黑体辐射在技术上也有实际应用。例如，红外温度计和热成像相机依赖于黑体辐射的原理来测量温度和可视化热模式。这些设备在医学、制造和环境监测等多个行业中是无价的。黑体的概念在气候科学中也发挥着关键作用。地球在考虑其吸收太阳辐射和重新发射红外辐射的能力时，可以被近似为黑体。了解地球作为黑体的行为有助于科学家建立气候变化模型并预测未来的环境条件。这一知识对于制定减轻全球变暖影响的策略以及确保可持续未来至关重要。总之，黑体的概念不仅仅是一个理论构造，而是现代物理学的基石，具有深远的影响。从天体物理学到量子力学，再到技术应用和气候科学，黑体的研究显著推动了我们对自然世界的理解。随着我们继续探索宇宙的奥秘，与黑体相关的原则无疑将继续在科学探究和创新中发挥重要作用。