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# 电子代写|光纤代写Optical Fiber代考|EC568 RADIANT FLUX MEASUREMENT

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Exitance is similar to the irradiance but it is the property of the radiation source. However, it can be also determined by measuring the radiant flux that is captured by the detector. If the radiant flux is known, then, based on the geometry of the measurement setup, the exitance of the source can be determined if the distance from the source to the detector and the size of the source are known.

## 电子代写|光纤代写Optical Fiber代考|INTEGRATING SPHERE

An integrating sphere is an optical device that consists of a spherical shell in which inner walls are covered with a diffuse, white, and highly reflective coating. To be able to perform the measurements, there are small holes at the sphere for entrance and exit ports. The main function of an integrating sphere is to spatially integrate the radiant flux by a uniform scattering or diffusing effect that occurs at its inner walls. Light rays, which are incident at any point on the integrating sphere inner walls, are due to the multiple scatterings, distributed evenly to the all other points at the inner sphere surface. An integrating sphere is typically used with some light source and a detector for radiant flux measurement and it has become a standard instrument in optical radiometry and photometry. It has a unique function of the total flux measurement of any light source in a single measurement. Typical integrating sphere arrangement is presented in Figure $2.15$. The light, which radiant flux $\Phi_1$ is to be measured, enters the integrating sphere multiple scatterings at the inner highly reflective and diffusive walls, the multiple scatterings at the inner highly reflective and diffusive walls, the irradiance $E$.

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## MATLAB代写

MATLAB 是一种用于技术计算的高性能语言。它将计算、可视化和编程集成在一个易于使用的环境中，其中问题和解决方案以熟悉的数学符号表示。典型用途包括：数学和计算算法开发建模、仿真和原型制作数据分析、探索和可视化科学和工程图形应用程序开发，包括图形用户界面构建MATLAB 是一个交互式系统，其基本数据元素是一个不需要维度的数组。这使您可以解决许多技术计算问题，尤其是那些具有矩阵和向量公式的问题，而只需用 C 或 Fortran 等标量非交互式语言编写程序所需的时间的一小部分。MATLAB 名称代表矩阵实验室。MATLAB 最初的编写目的是提供对由 LINPACK 和 EISPACK 项目开发的矩阵软件的轻松访问，这两个项目共同代表了矩阵计算软件的最新技术。MATLAB 经过多年的发展，得到了许多用户的投入。在大学环境中，它是数学、工程和科学入门和高级课程的标准教学工具。在工业领域，MATLAB 是高效研究、开发和分析的首选工具。MATLAB 具有一系列称为工具箱的特定于应用程序的解决方案。对于大多数 MATLAB 用户来说非常重要，工具箱允许您学习应用专业技术。工具箱是 MATLAB 函数（M 文件）的综合集合，可扩展 MATLAB 环境以解决特定类别的问题。可用工具箱的领域包括信号处理、控制系统、神经网络、模糊逻辑、小波、仿真等。