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相关概念视频

Measuring Reaction Rates03:09

Measuring Reaction Rates

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Polarimetry finds application in chemical kinetics to measure the concentration and reaction kinetics of optically active substances during a chemical reaction. Optically active substances have the capability of rotating the plane of polarization of linearly polarized light passing through them—a feature called optical rotation. Optical activity is attributed to the molecular structure of substances. Normal monochromatic light is unpolarized and possesses oscillations of the electrical...
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Curvilinear Motion: Polar Coordinates01:27

Curvilinear Motion: Polar Coordinates

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In polar coordinates, the motion of a particle follows a curvilinear path. The radial coordinate symbolized as 'r,' extends outward from a fixed origin to the particle, while the angular coordinate, 'θ,' measured in radians, represents the counterclockwise angle between a fixed reference line and the radial line connecting the origin to the particle.
The particle's location is described using a unit vector along the radial direction. Deriving the particle's position...
391
Polar and Cylindrical Coordinates01:22

Polar and Cylindrical Coordinates

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The Cartesian coordinate system is a very convenient tool to use when describing the displacements and velocities of objects and the forces acting on them. However, it becomes cumbersome when we need to describe the rotation of objects. So, when describing rotation, the polar coordinate system is generally used.
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相关实验视频

Updated: Jul 20, 2025

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
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基于计算算法的简单的极度测量测量.

Xiaoqian Wang, Kean Zhu, Kaihua Zhu

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    此摘要是机器生成的。

    一个新的紧型极度计使用液晶变量延迟器和极化器. 这种具有成本效益的设备可以分析极化光学应用的光强度变化.

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    A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
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    A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
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    科学领域:

    • 光学和光子学 在光学和光子学.
    • 材料科学 材料科学 材料科学

    背景情况:

    • 极度测量对于分析光的极化是至关重要的.
    • 现有的极度计可能是重的或昂贵的.

    研究的目的:

    • 为了展示一个简单,紧,和成本效益高的极相仪.
    • 为了实现高分辨率的极度测量测量.

    主要方法:

    • 使用了两个电控的液晶变量减速器 (LCVR) 和一个线性偏振器.
    • 采用计算算法来分析调制光强度变化.
    • 集成功率计或CMOS摄像头用于数据采集.

    主要成果:

    • 一个概念验证原型成功建造和测试.
    • 证明了测量空间变异极化状态的能力.
    • 验证了分辨率无损极度测量的潜力.

    结论:

    • 拟议的方法为紧型极极度计的实现提供了一种具有成本效益的解决方案.
    • 该设备适合与标准光功率测量工具集成.
    • 这种紧的极相仪推进了极化光学应用.