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Related Concept Videos

Interference and Diffraction02:18

Interference and Diffraction

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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In the late 1800s, the revelation that light extended beyond visible wavelengths led to the discovery of X-rays by Wilhelm Roentgen. Recognized as high-energy electromagnetic radiation with short wavelengths, X-rays prompted exploration into their interaction with crystals. Max von Laue proposed in 1912 that the periodic arrangement of atoms, ions, or molecules in crystals would cause them to diffract X-rays, a hypothesis confirmed through experiments with copper sulfate and zinc sulfide...
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X-ray Crystallography

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Diffraction
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Related Experiment Video

Updated: Jun 15, 2026

Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene
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Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene

Published on: August 22, 2017

Fresnel approximation applicability to ultrasonic diffraction.

P M Mejias

    Applied Optics
    |March 11, 2010
    PubMed
    Summary
    This summary is machine-generated.

    This study presents a new method for calculating light diffraction by ultrasound in liquids. The approach accurately predicts diffracted light intensities, aligning well with experimental data beyond traditional limits.

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    Wideband Optical Detector of Ultrasound for Medical Imaging Applications
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    Published on: May 11, 2014

    Area of Science:

    • Physics
    • Optics
    • Acoustics

    Background:

    • Light diffraction by ultrasound is a complex phenomenon.
    • Existing models like Raman-Nath and Brillouin have limitations.

    Purpose of the Study:

    • To develop a novel method for calculating diffracted amplitude.
    • To validate the method against established theories and experimental data.

    Main Methods:

    • Utilizing Fresnel or parabolic approximation of the Helmholtz scalar wave equation.
    • Calculating intensities of diffracted orders.

    Main Results:

    • The proposed method's results coincide with Raman-Nath and Brillouin results within their validity range.
    • Excellent agreement was found with Klein and Hiedemann's experimental values, even outside Raman-Nath applicability.

    Conclusions:

    • The presented method offers a robust approach for analyzing acousto-optic interactions.
    • This technique extends the understanding of light diffraction in liquids under ultrasonic irradiation.