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関連する概念動画

Sequence Networks of Rotating Machines01:24

Sequence Networks of Rotating Machines

505
A Y-connected synchronous generator, grounded through a neutral impedance, is designed to produce balanced internal phase voltages with only positive-sequence components. The generator's sequence networks include a source voltage that is exclusively in the positive-sequence network. The sequence components of line-to-ground voltages at the generator terminals illustrate this configuration.
Zero-sequence current induces a voltage drop across the generator's neutral impedance and other...
505
Magnetic Vector Potential01:15

Magnetic Vector Potential

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In electrostatics, the electric field can be written as the negative gradient of the potential. In magnetostatics, the zero divergence of the magnetic field ensures that the magnetic field can be expressed as the curl of a vector potential. This potential is known as the magnetic vector potential.
Consider an ideal solenoid with n turns per unit length and radius R. If I is the current through the solenoid, the magnetic field inside the solenoid is expressed as the product of vacuum...
1.6K
Vector Transformation in Rotating Coordinate Systems01:16

Vector Transformation in Rotating Coordinate Systems

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Consider a vector rotating about an axis with an angular velocity, such that its tip sweeps a circular path.
2.7K
Vector Algebra: Method of Components01:08

Vector Algebra: Method of Components

20.0K
It is cumbersome to find the magnitudes of vectors using the parallelogram rule or using the graphical method to perform mathematical operations like addition, subtraction, and multiplication. There are two ways to circumvent this algebraic complexity. One way is to draw the vectors to scale, as in navigation, and read approximate vector lengths and angles (directions) from the graphs. The other way is to use the method of components.
In many applications, the magnitudes and directions of...
20.0K
Position Vectors01:29

Position Vectors

2.0K
A position vector is a fundamental concept in mathematics that helps determine the position of one point with respect to another point in space. It is a vector that describes the direction and distance between two points. Position vectors are highly useful in the field of math and science, as they help represent spatial relationships and make calculations easier.
For instance, we want to locate a point P(x, y, z) relative to the origin of coordinates O. In that case, we can define a position...
2.0K
Acceleration Vectors01:30

Acceleration Vectors

23.5K
In everyday conversation, accelerating means speeding up. Acceleration is a vector in the same direction as the change in velocity, Δv, therefore the greater the acceleration, the greater the change in velocity over a given time. Since velocity is a vector, it can change in magnitude, direction, or both. Thus acceleration is a change in speed or direction, or both. For example, if a runner traveling at 10 km/h due east slows to a stop, reverses direction, and continues their run at 10 km/h...
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関連する実験動画

Updated: Feb 20, 2026

Direct Imaging of Laser-driven Ultrafast Molecular Rotation
10:52

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

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多モードベクトル渦束の生成は,回転可能なD2NNNによって有効にされます.

Huijun Hu, Gongyuan Wang, Le Wang

    Optics express
    |February 18, 2026
    PubMed
    まとめ
    この要約は機械生成です。

    新しい回転可能な微分深層ニューラルネットワーク (R-D2NN) は,多用途のマルチモードベクトル渦束 (VVB) を生成します. この単一の再構成可能なデバイスは,訓練なしで,光通信とセンシングのための高精度VVB生成を提供します.

    さらに関連する動画

    The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
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    Scanning SQUID Study of Vortex Manipulation by Local Contact
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    関連する実験動画

    Last Updated: Feb 20, 2026

    Direct Imaging of Laser-driven Ultrafast Molecular Rotation
    10:52

    Direct Imaging of Laser-driven Ultrafast Molecular Rotation

    Published on: February 4, 2017

    10.3K
    The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
    12:14

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    Scanning SQUID Study of Vortex Manipulation by Local Contact
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    Scanning SQUID Study of Vortex Manipulation by Local Contact

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    科学分野:

    • 光学とフォトニック
    • 機械学習 アプリケーション
    • ビーム生成と操作

    背景:

    • ベクター・ヴォルテックス・ビーム (VVB) は,そのユニークな極化と軌道角運動量 (OAM) の特性により,高度な光学アプリケーションにおいて極めて重要です.
    • 多様なVVBを生成するには,しばしば複雑なセットアップやデバイスの再訓練が必要であり,柔軟性と効率性を制限します.

    研究 の 目的:

    • ダイナミックなVVB生成のための新しい回転分散深層ニューラルネットワーク (R-D2NN) アーキテクチャを導入する.
    • 制御されたOAMと極化でマルチモードVVBを製造するための単一要素,トレーニングなしのソリューションを実証します.

    主な方法:

    • 再構成可能なR-D2NNアーキテクチャで,その回転がVVB出力を制御する difrractive layer を使用しています.
    • 明確なOAMモードを持つ正方形に偏光された光学場の相関的な重置.
    • ストークスパラメータ測定と数値シミュレーションを用いた検証.

    主要な成果:

    • 数値シミュレーションでは,5つの difrractive 層を使用して,モードの純度> 99%の最大 16 モードVVBの生成が示されました.
    • 実験的実現は,空間光調節器 (SLM) の二層システムで平均モード純度の85%を達成しました.

    結論:

    • R-D2NNは,高信頼性,ダイナミックなVVB生成方法を提供します.
    • この訓練なしの単一要素アプローチは,光通信,センシング,その他の高度なフォトニックアプリケーションにおいて有望である.