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関連する概念動画

The Wave Nature of Light02:12

The Wave Nature of Light

61.7K
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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Wave Parameters01:10

Wave Parameters

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The simplest mechanical waves are associated with simple harmonic motion and repeat themselves for several cycles. These simple harmonic waves can be modeled using a combination of sine and cosine functions. Consider a simplified surface water wave that moves across the water's surface. Unlike complex ocean waves, in surface water waves, water moves vertically, oscillating up and down, whereas the disturbance of the wave moves horizontally through the medium. If a seagull is floating on the...
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Reflection of Waves01:07

Reflection of Waves

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When a wave travels from one medium to another, it gets reflected at the boundary of the second medium. A common example of this is when a person yells at a distance from a cliff and hears the echo of their voice. The sound waves (longitudinal waves) traveling in the air are reflected from the bounding cliff. Similarly, flipping one end of a string whose other end is tied to a wall causes a pulse (transverse wave) to travel through the string, which gets reflected upon reaching the wall. In...
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Half wave rectifier01:20

Half wave rectifier

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A half-wave rectifier is a fundamental circuit in electronics, designed to convert alternating current (AC) voltage into a unidirectional voltage. It utilizes the simplest form of diode rectification, where the circuit comprises a single diode in series with a load resistor and an AC power source.
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Full wave rectifier01:22

Full wave rectifier

2.9K
A full-wave rectifier is a device that converts alternating current (AC) to direct current (DC) and is more efficient than its half-wave counterpart. It typically includes a center-tapped transformer, two diodes, and a load resistor. The secondary winding of the transformer is divided to provide two equal voltages of opposite polarities, which is the pivotal element of full-wave rectification.
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Brain Waves01:23

Brain Waves

4.2K
Brain waves are electrical signals generated by the neurons in the brain, which are regularly monitored to measure mental activities. Brain waves and their frequency ranges can be measured using an electroencephalogram or EEG. There are four main types of brain waves, each with distinct characteristics:
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Updated: Feb 15, 2026

Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin
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Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin

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赤道波のトポロジカルな起源

Pierre Delplace1, J B Marston2, Antoine Venaille1

  • 1Université de Lyon, ENS (École Normale Supérieure) de Lyon, Université Claude Bernard, CNRS, Laboratoire de Physique, AF-69342 Lyon, France. pierre.delplace@ens-lyon.fr marston@brown.edu antoine.venaille@ens-lyon.fr.

Science (New York, N.Y.)
|October 7, 2017
PubMed
まとめ

トポロジーは地質学的な流れにおける 独特のエッジ波を説明します 地球の自転は,トポロジカル・イソレータに似た,海洋と大気波のトポロジカルな特性を生み出します.

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Measurements of Waves in a Wind-wave Tank Under Steady and Time-varying Wind Forcing
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Determining Membrane Protein Topology Using Fluorescence Protease Protection FPP
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Determining Membrane Protein Topology Using Fluorescence Protease Protection FPP

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Determining Membrane Protein Topology Using Fluorescence Protease Protection FPP
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科学分野:

  • 地理学
  • 凝縮物質物理学
  • 気候科学

背景:

  • 単方向のエッジ波は,地質学的な流れを含む多様な物理システムで観察されます.
  • トポロジカルな起源を暗示しています.
  • 地球の自転は 時間逆の対称性を破ります トポロジーの重要な要因です

研究 の 目的:

  • 赤道に閉じ込められた波のトポロジカルな起源,特にケルヴィンとヤナイモードを調査する.
  • 地理波とトポロジック概念の関連を証明する.
  • 地球の気候システムにおける トポロジーの役割を強調する

主な方法:

  • プアンカレ波を分析する
  • トポロジカルインヴァリアントとして最初のチェーン数を使用します.
  • 波の性質をトポロジカル・イソレータの概念と結びつける.

主要な成果:

  • ケルビンとヤナイモードのトポロジカルな起源が特定された.
  • 最初の2のチェルン数は,波の存在を保証する,散発モードの非微妙な構造を特徴づけていることが判明しました.
  • 海洋と大気波は トポロジカル・イソレータと 基本的な性質を共有しています

結論:

  • トポロジーは,地質学的システムにおける一方向のエッジ波を理解するための新しい枠組みを提供します.
  • 地球の回転は これらの波のトポロジカルな性質を確立するために重要です
  • トポロジーは 地球の気候システムの動態において 以前は認識されていない重要な役割を果たしています