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相关概念视频

Light Acquisition02:16

Light Acquisition

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In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
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Light as Energy01:35

Light as Energy

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The energy required to carry out photosynthesis is light— typically electromagnetic radiation from the sun. The range of all possible wavelengths is known as the electromagnetic spectrum.
Photons
A photon is a discrete electromagnetic particle or bundle of energy. Photons are characterized by their frequency, wavelength, and amplitude, similar to the properties of a wave. Waves with higher frequencies transmit more energy and have shorter wavelengths than longer wavelengths that transmit...
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Photoreceptors and Plant Responses to Light02:00

Photoreceptors and Plant Responses to Light

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Light plays a significant role in regulating the growth and development of plants. In addition to providing energy for photosynthesis, light provides other important cues to regulate a range of developmental and physiological responses in plants.
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Antibody Structure01:10

Antibody Structure

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Overview
Antibodies, also known as immunoglobulins (Ig), are essential players of the adaptive immune system. These antigen-binding proteins are produced by B cells and make up 20 percent of the total blood plasma by weight. In mammals, antibodies fall into five different classes, which each elicits a different biological response upon antigen binding.
The Y-Shaped Structure of Antibodies Consists of Four Polypeptide Chains
Antibodies consist of four polypeptide chains: two identical heavy...
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The Wave Nature of Light02:12

The Wave Nature of Light

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The nature of light has been a subject of inquiry since antiquity. In the seventeenth century, Isaac Newton performed experiments with lenses and prisms and was able to demonstrate that white light consists of the individual colors of the rainbow combined together. Newton explained his optics findings in terms of a "corpuscular" view of light, in which light was composed of streams of extremely tiny particles traveling at high speeds according to Newton's laws of motion.
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Structures of Solids02:22

Structures of Solids

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Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
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相关实验视频

Updated: Feb 6, 2026

Experimental Investigation of the Flow Structure over a Delta Wing Via Flow Visualization Methods
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Experimental Investigation of the Flow Structure over a Delta Wing Via Flow Visualization Methods

Published on: April 23, 2018

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有流量的结构光.

Wenxiang Yan1,2, Zheng Yuan1,2, Yuan Gao1,2

  • 1National Laboratory of Solid State Microstructures and School of Physics, Nanjing University, Nanjing, China.

Nature communications
|February 4, 2026
PubMed
概括
此摘要是机器生成的。

研究人员开发了一种水力动力学方法,用于灵活的自由空间结构光,从而实现定制的光束生成和先进的光学操纵. 这种方法增强了光通信和光流体应用.

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Determining 3D Flow Fields via Multi-camera Light Field Imaging
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Determining 3D Flow Fields via Multi-camera Light Field Imaging

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Experimental Investigation of the Flow Structure over a Delta Wing Via Flow Visualization Methods

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科学领域:

  • 光学和光子学 在光学和光子学.
  • 流体动力学 流体动力学
  • 光学工程是指光学工程.

背景情况:

  • 在光学操纵,处理和成像中的结构光应用受到传统的赫尔姆霍尔茨方程解决方案的限制.
  • 现有的方法限制结构光在自由空间中的固定传播规律.

研究的目的:

  • 用水力动力学描述为灵活的自由空间结构重新构建结构化的光.
  • 为了展示各种束家族的按需生成,并提供量身定制的传播动态.
  • 探索光流体学和自由空间光通信中的应用.

主要方法:

  • 重构结构光作为在水力动力学框架内的光学流.
  • 采用精简工程,在自由空间中实现灵活的光结构.
  • 使用光学笔进行类似于流体粒子跟踪速度测试的实验以验证.

主要成果:

  • 展示了高斯,贝塞尔,艾里和束的按需生成,具有受控的传播.
  • 引入了专门的模式来克服复杂的传播挑战.
  • 通过光流体操纵实验验验证设计的能量流线.

结论:

  • 水力动力学框架可以精确地控制自由空间结构光.
  • 这种方法在光学机械学,光流体学,成像学,计量学和通信领域开辟了新的可能性.
  • 定制的模式显示出改善自由空间光通信能力和弹性的潜力.