planckian radiator

简明释义

完全黑体

英英释义

例句

1.Thermal cameras often rely on the principles of a planckian radiator to accurately measure surface temperatures.

热成像相机通常依赖于普朗克辐射体的原理来准确测量表面温度。

2.The sun approximates a planckian radiator with a surface temperature of about 5,500 degrees Celsius.

太阳近似为普朗克辐射体，表面温度约为5500摄氏度。

3.The temperature of a planckian radiator can be determined by measuring the peak wavelength of its emitted light.

通过测量其发出光的峰值波长，可以确定普朗克辐射体的温度。

4.The lamp emits light similar to a planckian radiator, providing a warm and natural illumination.

这盏灯发出的光类似于普朗克辐射体，提供温暖而自然的照明。

5.In studying blackbody radiation, scientists often refer to the ideal characteristics of a planckian radiator.

在研究黑体辐射时，科学家们常常提到普朗克辐射体的理想特性。

作文

In the realm of physics and thermodynamics, understanding the concept of a planckian radiator is crucial for comprehending how objects emit radiation based on their temperature. A planckian radiator refers to an idealized physical body that perfectly absorbs all incident electromagnetic radiation, regardless of frequency or angle of incidence, and re-emits energy in a manner described by Planck's law of black-body radiation. This law states that the intensity of radiation emitted by a black body at thermal equilibrium is determined solely by its temperature. To delve deeper into this concept, it is essential to recognize that all objects emit thermal radiation if they are above absolute zero. The warmer an object becomes, the more energy it radiates. The planckian radiator serves as a reference point because it represents the most efficient emitter of thermal radiation. In practical terms, no real material can achieve perfect black-body behavior; however, some materials, such as carbon black or certain types of paint, can closely approximate this behavior under specific conditions.The significance of planckian radiators extends beyond theoretical physics; it plays a vital role in various applications, including climate science, astrophysics, and engineering. For instance, in climate science, understanding how the Earth emits infrared radiation helps scientists model and predict climate change. The Earth behaves approximately like a planckian radiator when considering its average temperature and the radiation it emits back into space. This interaction between incoming solar radiation and outgoing terrestrial radiation is fundamental to the greenhouse effect, which is critical for maintaining the planet's temperature.In astrophysics, stars can be modeled as planckian radiators to understand their spectral characteristics and luminosity. By analyzing the light emitted from a star, astronomers can determine its surface temperature and, consequently, its composition and distance from Earth. The concept of a planckian radiator thus provides a framework for interpreting astronomical observations and enhances our understanding of the universe.Moreover, in engineering, the principles of planckian radiators are applied in designing thermal systems, such as radiative cooling technologies and thermal insulation materials. Engineers utilize the knowledge of how materials emit and absorb radiation to create more efficient heating and cooling systems. By optimizing these systems based on the behavior of planckian radiators, we can significantly reduce energy consumption and improve overall efficiency.In conclusion, the concept of a planckian radiator is fundamental in various scientific disciplines, offering insights into the nature of thermal radiation and its implications for the environment, astronomy, and engineering. By studying this idealized radiator, we can better understand real-world phenomena and apply this knowledge to solve pressing challenges in technology and environmental science. Embracing the principles behind planckian radiators not only deepens our understanding of physics but also equips us with the tools to innovate and address global issues related to energy and climate change.

在物理学和热力学领域，理解“普朗克辐射体”这一概念对于理解物体如何根据其温度发射辐射至关重要。“普朗克辐射体”指的是一种理想化的物理体，它能够完美地吸收所有入射的电磁辐射，无论频率或入射角度如何，并按照普朗克的黑体辐射定律重新发射能量。该定律指出，处于热平衡状态的黑体所发射的辐射强度仅由其温度决定。要更深入地探讨这个概念，必须认识到所有物体在绝对零度以上都会发出热辐射。一个物体越温暖，它发出的能量就越多。“普朗克辐射体”作为参考点，因为它代表了热辐射的最有效发射体。在实际应用中，没有任何真实材料能够实现完美的黑体行为；然而，一些材料，如炭黑或某些类型的涂料，在特定条件下可以近似这种行为。“普朗克辐射体”的重要性超越了理论物理，它在气候科学、天体物理学和工程等多个应用中发挥着重要作用。例如，在气候科学中，理解地球如何发出红外辐射有助于科学家建模和预测气候变化。考虑到地球的平均温度及其向太空发射的辐射，地球在一定程度上表现得像一个“普朗克辐射体”。这种入射太阳辐射与外发地面辐射之间的相互作用是温室效应的基础，对于维持地球温度至关重要。在天体物理学中，星星可以被建模为“普朗克辐射体”，以理解其光谱特征和光度。通过分析从星星发出的光，天文学家可以确定其表面温度，从而推断其成分和与地球的距离。因此，“普朗克辐射体”的概念为解释天文观测提供了框架，并增强了我们对宇宙的理解。此外，在工程领域，“普朗克辐射体”的原理被应用于设计热系统，例如辐射冷却技术和热绝缘材料。工程师利用材料发射和吸收辐射的知识来创造更高效的供热和制冷系统。通过基于“普朗克辐射体”的行为优化这些系统，我们可以显著降低能源消耗并提高整体效率。总之，“普朗克辐射体”的概念在多个科学学科中具有基础性意义，为热辐射的性质及其对环境、天文学和工程的影响提供了见解。通过研究这一理想化的辐射体，我们可以更好地理解现实世界现象，并将这些知识应用于解决技术和环境科学中的紧迫挑战。掌握“普朗克辐射体”背后的原理不仅加深了我们对物理学的理解，也为我们提供了创新的工具，以应对与能源和气候变化相关的全球问题。