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相关概念视频

Color Vision01:24

Color Vision

Color perception begins in the retina, the light-sensitive layer at the back of the eye. Two main theories explain how colors are seen: the trichromatic theory and the opponent-process theory. The trichromatic theory, proposed by Thomas Young in 1802 and extended by Hermann von Helmholtz in 1852, suggests that color vision is based on three types of cone receptors in the retina. These cones are sensitive to different but overlapping ranges of wavelengths corresponding to red, blue, and green.

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相关实验视频

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Microfluidic Imaging Flow Cytometry by Asymmetric-detection Time-stretch Optical Microscopy ATOM
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两种颜色的每秒钟计时器,分秒计时器.

Jianan Wu, Jiayin Che, Fabin Zhang

    Optics express
    |June 29, 2023
    PubMed
    概括

    研究人员开发了一种使用直角双色 (OTC) 激光场的阿托秒钟计时器,以精确计时原子电离过程中的电子发射. 该工具分析光电子动量分布,以进行准确的测量.

    科学领域:

    • 原子物理 原子物理
    • 量子光学是一种量子光学.
    • 强场物理 强场物理

    背景情况:

    • 在强烈的激光场中原子电离是一种基本过程.
    • 直角双色 (OTC) 激光场提供了对电子动态的独特控制.
    • 了解电子响应时间对于每秒科学至关重要.

    研究的目的:

    • 在强大的OTC激光场中以数值和分析的方式研究原子电离.
    • 建立一种使用OTC领域精确计时电子发射的方法.
    • 开发一台用于先进激光物质相互作用的阿托秒钟钟镜.

    主要方法:

    • 原子电离的数值模拟.
    • 强激光-原子相互作用的分析处理.
    • 对光电子运动量分布的分析.
    • 开发一个包含库伦效应的强场模型.

    主要成果:

    • 确定了两种不同的光电子运动量分布结构:矩形形状和肩形状.
    • 他将这些结构与原子内部电子的亚秒反应相关联.
    • 结构位置和电子响应时间之间的导出映射.
    • 证明了用于计时电子发射的阿托秒钟钟表的可行性.

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    Long-range Channelrhodopsin-assisted Circuit Mapping of Inferior Colliculus Neurons with Blue and Red-shifted Channelrhodopsins
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    相关实验视频

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    Separation of Spinach Thylakoid Protein Complexes by Native Green Gel Electrophoresis and Band Characterization using Time-Correlated Single Photon Counting
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    Long-range Channelrhodopsin-assisted Circuit Mapping of Inferior Colliculus Neurons with Blue and Red-shifted Channelrhodopsins
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    Long-range Channelrhodopsin-assisted Circuit Mapping of Inferior Colliculus Neurons with Blue and Red-shifted Channelrhodopsins

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    结论:

    • 在光电子运动量分布中观察到的结构是电子反应的直接特征.
    • 开发的映射使得OTC领域的电子排放能够精确计时.
    • 阿托秒钟显微镜为控制和理解超快电子动态提供了一个新的工具.