radiant intensity

简明释义

辐射强度

英英释义

例句

1.The radiant intensity of a star can help astronomers determine its distance from Earth.

一颗星星的辐射强度可以帮助天文学家确定它与地球的距离。

2.The radiant intensity of sunlight varies throughout the day.

阳光的辐射强度在一天中是变化的。

3.The radiant intensity of the new LED lights is significantly higher than that of traditional bulbs.

新款LED灯的辐射强度明显高于传统灯泡。

4.In this experiment, we measured the radiant intensity of the laser beam across different angles.

在这个实验中，我们测量了激光束在不同角度下的辐射强度。

5.To optimize the design, we need to calculate the radiant intensity emitted by the surface.

为了优化设计，我们需要计算表面发出的辐射强度。

作文

In the field of physics, particularly in optics and radiometry, the concept of radiant intensity plays a crucial role in understanding how light is emitted from various sources. Radiant intensity is defined as the power emitted by a light source per unit solid angle in a specified direction. It is measured in watts per steradian (W/sr) and provides valuable information about the distribution of light in space. This concept is essential for engineers and designers who work with lighting systems, as it helps them create effective and efficient illumination solutions.To illustrate the importance of radiant intensity, consider the design of street lighting. When planning street lights, urban planners must take into account not only the total luminous flux but also the radiant intensity of each lamp. A lamp with high radiant intensity directed toward the road will ensure that drivers and pedestrians can see clearly, enhancing safety and visibility during nighttime hours. Conversely, if the radiant intensity is too low or poorly directed, it may lead to dark spots that can be hazardous.Moreover, the concept of radiant intensity is also significant in the realm of photography and cinematography. Photographers must understand how different light sources emit light in various directions to achieve the desired effects in their images. For instance, a flash with a high radiant intensity can create dramatic highlights and shadows, while a softbox with lower radiant intensity can produce softer, more diffused lighting. This understanding allows photographers to manipulate light effectively to enhance their visual storytelling.In addition to practical applications, radiant intensity is also a fundamental concept in scientific research. In astrophysics, for example, scientists study the radiant intensity of celestial bodies to determine their properties and behavior. By analyzing the light emitted from stars and galaxies, researchers can infer vital information such as temperature, distance, and composition. This data is crucial for expanding our knowledge of the universe and its origins.Furthermore, advancements in technology have led to the development of sophisticated tools that measure radiant intensity with high precision. Devices such as photometers and spectroradiometers allow scientists and engineers to quantify light emissions accurately, facilitating better designs and innovations in various fields. As technology continues to evolve, the importance of understanding radiant intensity will only grow, influencing everything from consumer electronics to renewable energy solutions.In conclusion, the term radiant intensity encompasses a vital aspect of light emission that has far-reaching implications across numerous disciplines. Whether in urban planning, photography, scientific research, or technological innovation, grasping the concept of radiant intensity is essential for anyone involved in the study or application of light. By comprehending how light behaves and is distributed in space, we can harness its power more effectively, leading to safer environments, stunning visuals, and groundbreaking discoveries.

在物理学领域，特别是在光学和辐射测量学中，辐射强度的概念在理解光源如何发出光方面起着至关重要的作用。辐射强度被定义为光源在特定方向上每单位立体角发出的功率。它的单位是瓦特每球面度（W/sr），并提供了关于光在空间分布的重要信息。这个概念对于从事照明系统工作的工程师和设计师至关重要，因为它帮助他们创造有效且高效的照明解决方案。为了说明辐射强度的重要性，考虑一下街道照明的设计。在规划街灯时，城市规划者不仅必须考虑总光通量，还必须考虑每个灯具的辐射强度。一盏具有高辐射强度并朝向道路的灯具将确保驾驶员和行人能够清晰地看到，从而增强夜间行驶的安全性和可见性。相反，如果辐射强度过低或方向不当，可能会导致暗点，从而造成危险。此外，辐射强度的概念在摄影和电影摄影领域也具有重要意义。摄影师必须理解不同光源以各种方向发出光的方式，以在其图像中实现所需的效果。例如，具有高辐射强度的闪光灯可以产生戏剧性的高光和阴影，而具有较低辐射强度的柔光箱则可以产生更柔和、扩散的光线。这种理解使摄影师能够有效地操控光线，以增强他们的视觉叙事。除了实际应用外，辐射强度在科学研究中也是一个基本概念。例如，在天体物理学中，科学家研究天体的辐射强度以确定其特性和行为。通过分析恒星和星系发出的光，研究人员可以推断出温度、距离和成分等重要信息。这些数据对于扩展我们对宇宙及其起源的知识至关重要。此外，技术的进步导致开发出高精度测量辐射强度的复杂工具。光度计和光谱辐射计等设备使科学家和工程师能够准确量化光的发射，从而促进各个领域的更好设计和创新。随着技术的不断发展，理解辐射强度的重要性只会增加，影响从消费电子到可再生能源解决方案的方方面面。总之，术语辐射强度涵盖了光发射的一个重要方面，这在众多学科中具有深远的影响。无论是在城市规划、摄影、科学研究还是技术创新中，掌握辐射强度的概念对任何参与光的研究或应用的人来说都是必不可少的。通过理解光在空间中的行为和分布，我们可以更有效地利用其力量，从而带来更安全的环境、令人惊叹的视觉效果和突破性的发现。