ideal black body

简明释义

绝对黑体

英英释义

例句

1.An ideal black body emits radiation at all wavelengths based on its temperature.

理想黑体根据其温度在所有波长上发出辐射。

2.In physics, an ideal black body is a perfect absorber of all radiation.

在物理学中，理想黑体是所有辐射的完美吸收体。

3.The concept of an ideal black body helps scientists understand thermal radiation.

对于科学家来说，理想黑体的概念有助于理解热辐射。

4.The Stefan-Boltzmann law applies to an ideal black body to calculate its energy output.

斯特藩-玻尔兹曼定律适用于理想黑体以计算其能量输出。

5.In astronomy, stars can be approximated as ideal black bodies to study their properties.

在天文学中，恒星可以被近似看作理想黑体以研究其特性。

作文

In the realm of physics, the concept of an ideal black body is fundamental to our understanding of thermal radiation and emissivity. An ideal black body is defined as a perfect absorber and emitter of radiation, meaning it absorbs all incoming light and does not reflect any. This theoretical construct serves as a benchmark against which real materials can be compared. Understanding this concept is crucial for various applications in science and engineering, including climate modeling, astrophysics, and thermodynamics.The significance of the ideal black body lies in its ability to emit radiation at all wavelengths when heated. According to Planck's law, the spectral distribution of this emitted radiation depends solely on the temperature of the body, not on its material composition. This means that an ideal black body at a temperature of 5000 Kelvin will emit a specific spectrum of radiation that can be predicted precisely using mathematical formulas. This predictability is what makes the ideal black body such a valuable tool in scientific research.One of the most important implications of the ideal black body concept is the idea of black body radiation, which explains how objects emit energy in the form of electromagnetic waves. This phenomenon is particularly relevant in astronomy, where stars can be approximated as ideal black bodies. By measuring the spectrum of light emitted by a star, astronomers can determine its temperature, composition, and distance from Earth. The study of black body radiation has also led to significant advancements in quantum mechanics and our understanding of energy quantization.Moreover, the ideal black body concept is essential for understanding the greenhouse effect and climate change. The Earth itself can be modeled as an ideal black body that absorbs solar radiation and re-emits it as infrared radiation. However, unlike the ideal black body, the Earth’s atmosphere interacts with this radiation, leading to the greenhouse effect. This interaction is crucial for maintaining the planet's temperature, but human activities have altered this delicate balance, resulting in global warming.In engineering, the ideal black body provides a standard for designing thermal systems. Engineers often use the concept to develop efficient heating and cooling systems, ensuring that they maximize energy absorption and minimize heat loss. By understanding how close a material comes to being an ideal black body, engineers can optimize materials for specific applications, such as insulators or radiators.In conclusion, the concept of an ideal black body is not merely an abstract idea; it has practical implications across multiple fields of science and technology. From studying the universe to addressing climate change and enhancing engineering designs, the ideal black body serves as a crucial reference point. As we continue to explore and understand the physical world, the principles surrounding the ideal black body will undoubtedly remain central to our discoveries and innovations.

在物理学领域，理想黑体的概念是我们理解热辐射和发射率的基础。理想黑体被定义为完美的辐射吸收体和发射体，这意味着它吸收所有入射光并且不反射任何光。这一理论构造作为一个基准，对比真实材料的特性。理解这一概念对科学和工程中的各种应用至关重要，包括气候建模、天体物理学和热力学。理想黑体的重要性在于它能够在加热时以所有波长发出辐射。根据普朗克定律，这种发射辐射的光谱分布仅依赖于物体的温度，而不是其材料成分。这意味着，在5000开尔文的温度下，理想黑体将发出特定的辐射光谱，可以通过数学公式精确预测。这种可预测性使得理想黑体成为科学研究中极具价值的工具。理想黑体概念的一个重要含义是黑体辐射的理论，它解释了物体如何以电磁波的形式发出能量。这一现象在天文学中尤为相关，恒星可以近似为理想黑体。通过测量恒星发出的光谱，天文学家可以确定其温度、成分以及与地球的距离。对黑体辐射的研究也导致了量子力学的重要进展以及我们对能量量子化的理解。此外，理想黑体概念对于理解温室效应和气候变化至关重要。地球本身可以被建模为一个理想黑体，它吸收太阳辐射并将其重新发射为红外辐射。然而，与理想黑体不同，地球的大气层与这种辐射相互作用，导致了温室效应。这种相互作用对维持地球的温度至关重要，但人类活动已经改变了这种微妙的平衡，导致全球变暖。在工程学中，理想黑体为设计热系统提供了标准。工程师通常利用这一概念来开发高效的加热和冷却系统，确保它们最大限度地吸收能量并最小化热损失。通过了解材料与理想黑体的接近程度，工程师可以优化特定应用的材料，如绝缘体或散热器。总之，理想黑体的概念不仅仅是一个抽象的想法；它在多个科学和技术领域具有实际意义。从研究宇宙到应对气候变化，再到提升工程设计，理想黑体作为一个关键的参考点。随着我们继续探索和理解物理世界，围绕理想黑体的原则无疑将继续在我们的发现和创新中占据中心地位。