Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Propagation of Waves01:07

Propagation of Waves

2.3K
When a wave propagates from one medium to another, part of it may get reflected in the first medium, and part of it may get transmitted to the second medium. In such a case, the interface of the two mediums can be considered as a boundary that is neither fixed nor free.
Consider a scenario where a wave propagates from a string of low linear mass density to a string of high linear mass density. In such a case, the reflected wave is out of phase with respect to the incident wave, however the...
2.3K
Travelling Waves01:04

Travelling Waves

4.9K
A wave is a disturbance that propagates from its source, repeating itself periodically, and is typically associated with simple harmonic motion. Mechanical waves are governed by Newton's laws and require a medium to travel. A medium is a substance in which a mechanical wave propagates, and the medium produces an elastic restoring force when it is deformed.
Water waves, sound waves, and seismic waves are some examples of mechanical waves. For water waves, the wave propagation medium is...
4.9K
Interference and Superposition of Waves01:07

Interference and Superposition of Waves

4.7K
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,...
4.7K
Plane Electromagnetic Waves I01:30

Plane Electromagnetic Waves I

3.5K
The existence of combined electric and magnetic fields that propagate through space as electromagnetic (EM) waves is the most significant prediction of Maxwell's equations. As Maxwell's equations hold in free space, the predicted electromagnetic waves do not require a medium for their propagation. An EM wave comprises an electric field, defined as the force per charge on a stationary charge, and a magnetic field, which is the force per charge on a moving charge.
The EM field is assumed...
3.5K
Reflection of Waves01:07

Reflection of Waves

3.6K
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...
3.6K
Standing Waves in a Cavity01:28

Standing Waves in a Cavity

802
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:
802

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Corrigendum to "Sensitivity of Lamb waves in viscoelastic polymer plates to surface contamination" [Ultrasonics 149 (2025) 107571].

Ultrasonics·2026
Same author

Hydrogel metapad with ultrasound transparency and broadband focusing for biomedical imaging.

National science review·2026
Same author

Laser ultrasonic investigation of chromium coating impact on elastic guided waves in zirconium tubes.

The Journal of the Acoustical Society of America·2026
Same author

Broadband sound absorption with subwavelength bubble metascreens: Realization of an anechoic water tank.

The Journal of the Acoustical Society of America·2025
Same author

Non-linear coupling in two non-linear delayed acoustic resonatorsa).

The Journal of the Acoustical Society of America·2025
Same author

Ultrasound matrix imaging for 3D transcranial in vivo localization microscopy.

Science advances·2025
Same journal

Erratum: Bacterial Turbulence at Compressible Fluid Interfaces [Phys. Rev. Lett. 136, 138301 (2026)].

Physical review letters·2026
Same journal

Unveiling Light-Quark Yukawa Flavor Structure via Dihadron Fragmentation at Lepton Colliders.

Physical review letters·2026
Same journal

Adaptable Route to Fast Coherent State Transport via Bang-Bang-Bang Protocols.

Physical review letters·2026
Same journal

Topological Transition and Emergence of Elasticity of Dislocation in Skyrmion Lattice: Beyond Kittel's Magnetic-Polar Analogy.

Physical review letters·2026
Same journal

Pound-Drever-Hall Method for Superconducting-Qubit Readout.

Physical review letters·2026
Same journal

Coupling a ^{73}Ge Nuclear Spin to an Electrostatically Defined Quantum Dot in Silicon.

Physical review letters·2026
See all related articles

Related Experiment Video

Updated: May 8, 2025

Author Spotlight: Characterizing Environmental Biofilm Mechanics Using Optical Coherence Elastography and its Applications in Wastewater Treatment
04:51

Author Spotlight: Characterizing Environmental Biofilm Mechanics Using Optical Coherence Elastography and its Applications in Wastewater Treatment

Published on: March 1, 2024

886

Elastic Wave Packets Crossing a Space-Time Interface.

Alexandre Delory1,2, Claire Prada1, Maxime Lanoy3

  • 1Institut Langevin, ESPCI Paris, Université PSL, CNRS, 75005 Paris, France.

Physical Review Letters
|January 29, 2025
PubMed
Summary
This summary is machine-generated.

Elastic waves crossing a moving interface in evolving media violate traditional conservation laws. Experiments show dynamic interfaces alter wave packet wavelength and frequency, confirming theoretical predictions.

More Related Videos

Echo Particle Image Velocimetry
16:31

Echo Particle Image Velocimetry

Published on: December 27, 2012

14.6K
Measurements of Waves in a Wind-wave Tank Under Steady and Time-varying Wind Forcing
08:54

Measurements of Waves in a Wind-wave Tank Under Steady and Time-varying Wind Forcing

Published on: February 13, 2018

8.6K

Related Experiment Videos

Last Updated: May 8, 2025

Author Spotlight: Characterizing Environmental Biofilm Mechanics Using Optical Coherence Elastography and its Applications in Wastewater Treatment
04:51

Author Spotlight: Characterizing Environmental Biofilm Mechanics Using Optical Coherence Elastography and its Applications in Wastewater Treatment

Published on: March 1, 2024

886
Echo Particle Image Velocimetry
16:31

Echo Particle Image Velocimetry

Published on: December 27, 2012

14.6K
Measurements of Waves in a Wind-wave Tank Under Steady and Time-varying Wind Forcing
08:54

Measurements of Waves in a Wind-wave Tank Under Steady and Time-varying Wind Forcing

Published on: February 13, 2018

8.6K

Area of Science:

  • Physics
  • Wave phenomena
  • Materials science

Background:

  • Traditional conservation laws in physics often assume static media.
  • Interactions between waves and evolving media present unique challenges to established principles.
  • Understanding wave behavior in dynamic environments is crucial for various scientific fields.

Purpose of the Study:

  • To experimentally investigate the behavior of elastic wave packets interacting with a moving interface.
  • To observe the noninvariance of wavelength and frequency when waves cross such an interface.
  • To validate theoretical predictions concerning wave packet shifts in evolving media.

Main Methods:

  • An experimental setup using an elastic strip was developed.
  • Local stretching of the strip was dynamically controlled by pulling one end at a constant velocity.
  • This created a spatiotemporal interface that propagated along the strip.

Main Results:

  • The experiment successfully demonstrated a spatiotemporal interface moving along the elastic strip.
  • Observed shifts in wavelength and frequency of elastic wave packets were recorded as they crossed the interface.
  • The experimental findings align with theoretical predictions for wave-interface interactions.

Conclusions:

  • The interaction of elastic waves with a moving interface in an evolving medium leads to non-conservation of wavelength and frequency.
  • The experimental setup effectively models and confirms theoretical predictions for wave behavior in dynamic media.
  • This study highlights the complexities introduced by evolving media in wave propagation physics.