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関連する概念動画

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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Interference and Diffraction02:18

Interference and Diffraction

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Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.
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The de Broglie Wavelength02:32

The de Broglie Wavelength

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In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
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X-ray Crystallography02:18

X-ray Crystallography

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The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
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Interference and Superposition of Waves01:07

Interference and Superposition of Waves

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When two waves of the same nature occur in the same region simultaneously, they result in interference. Interference of waves implies that the net effect of the waves is the sum of the individual waves' effects. However, it does not imply that the individual waves affect the propagation of other waves.
Interference occurs in mechanical waves, such as sound waves, waves on a string, and surface water waves. Mechanical waves correspond to the physical displacement of particles. Hence,...
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Standing Waves in a Cavity01:28

Standing Waves in a Cavity

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A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
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Updated: May 4, 2026

Quantifying Mixing using Magnetic Resonance Imaging
07:33

Quantifying Mixing using Magnetic Resonance Imaging

Published on: January 25, 2012

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X線と光波が混じり合っている.

T E Glover1, D M Fritz, M Cammarata

  • 1Advanced Light Source Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA. teglover@lbl.gov

Nature
|August 31, 2012
PubMed
まとめ
この要約は機械生成です。

研究者らは,光と物質の相互作用を理解するための新しい原子規模の探査機であるX線と光学総周波数生成を実証した. この画期的な発見は,材料科学における顕微鏡光学特性の探求のための新しい道を開く.

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Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing
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Quantifying Mixing using Magnetic Resonance Imaging

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Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing
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X-ray Beam Induced Current Measurements for Multi-Modal X-ray Microscopy of Solar Cells
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科学分野:

  • 凝縮物質物理学 凝縮物質物理学
  • マテリアルサイエンス 材料科学
  • フォトニクス フォトニクスとは

背景:

  • 光と物質の相互作用は,科学と技術において根本的なものです.
  • 光学相互作用の顕微鏡の詳細は,依然として十分に理解されず,測定するのが困難です.
  • 光学相互作用の原子規模の探査のための以前の方法は,源の強度によって制限されていました.

研究 の 目的:

  • 実験的にX線と光学総周波数生成を実証する.
  • 顕微鏡の光学相互作用のための原子規模の探査機を開発する.
  • 材料内の光学的に誘導された電荷と顕微鏡の場を調査する.

主な方法:

  • 高強度源としてX線レーザーを利用する.
  • X線と光学総周波数生成実験を行う.
  • 実験結果を第一原理の計算と比較する.

主要な成果:

  • X線と光学総周波数生成を初めて成功裏に観測した.
  • 測定された効率は,ダイヤモンドの理論的予測と一致しています.
  • 光学的に誘導された電荷とフィールドの相互宇宙探査を実証した.

結論:

  • X線と光学総周波数生成は,原子規模の光学相互作用を調査するための実用的な技術です.
  • この方法は,照らされた材料内の顕微鏡の領域に関する前例のない洞察を提供します.
  • このテクニックは,基礎科学と応用科学の進歩のための大きな可能性を秘めています.