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

Photoelectric Effect02:26

Photoelectric Effect

40.7K
When light of a particular wavelength strikes a metal surface, electrons are emitted. This is called the photoelectric effect. The minimum frequency of light that can cause such emission of electrons is called the threshold frequency, which is specific to the metal. Light with a frequency lower than the threshold frequency, even if it is of high intensity, cannot initiate the emission of electrons. However, when the frequency is higher than the threshold value, the number of electrons ejected...
40.7K
Motional Emf01:22

Motional Emf

4.2K
Magnetic flux depends on three factors: the strength of the magnetic field, the area through which the field lines pass, and the field's orientation with respect to the surface area. If any of these quantities vary, a corresponding variation in magnetic flux occurs. If the area through which the magnetic field lines are passing changes, then the magnetic flux also changes. This change in the area can be of two types: the flux through the rectangular loop increases as it moves into the...
4.2K
Magnetic Field due to Moving Charges01:23

Magnetic Field due to Moving Charges

12.1K
A stationary charge creates and interacts with the electric field, while a moving charge creates a magnetic field.
Consider a point charge moving with a constant velocity. Like the electric field, the magnetic field at any point is directly proportional to the magnitude of the charge and inversely proportional to the square of the distance between the source point and the field point. However, unlike the electric field, the magnetic field is always perpendicular to the plane containing the line...
12.1K
Potential Due to a Magnetized Object01:24

Potential Due to a Magnetized Object

850
Magnetic dipoles in magnetic materials are aligned when placed under an external magnetic field. For paramagnets and ferromagnets, dipole alignment occurs in the direction of the magnetic field. However, the dipoles align opposite to the field in the case of diamagnets. This state of magnetic polarization due to the external field is called magnetization. Magnetization is defined as the dipole moment per unit volume. It plays a similar role to polarization in electrostatics.
The vector...
850
Magnetic Force01:18

Magnetic Force

2.3K
In addition to the electric forces between electric charges, moving electric charges exert magnetic forces on each other. A magnetic field is created by a moving charge or a group of moving charges known as the electric current. A magnetic force is experienced by a second current or moving charge in response to this magnetic field. Fundamentally, interactions between moving electrons in the atoms of two bodies produce magnetic forces between them.
The magnetic force acting on a moving charge...
2.3K
Magnetic Fields01:27

Magnetic Fields

7.7K
A moving charge or a current creates a magnetic field in the surrounding space, in addition to its electric field. The magnetic field exerts a force on any other moving charge or current that is present in the field. Like an electric field, the magnetic field is also a vector field. At any position, the direction of the magnetic field is defined as the direction in which the north pole of a compass needle points.
A magnetic field is defined by the force that a charged particle experiences...
7.7K

You might also read

Related Articles

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

Sort by
Same author

Enterococcus faecalis NBRC 100481 Protects the Intestinal Barrier via α-catenin/HMP-1 in Caenorhabditis elegans.

Probiotics and antimicrobial proteins·2026
Same author

Solvation-Mediated Assembly for Large-Scale Synthesis of Covalent Organic Framework Membranes.

Angewandte Chemie (International ed. in English)·2026
Same author

Posttranscriptional regulation of PD-1 by PRMT5/WDR77 complex shapes T cell effector function and antitumor immunity.

The Journal of clinical investigation·2026
Same author

Violet Arsenic Phosphorus: Switching p-Type into High Performance n-Type Semiconductor by Arsenic Substitution.

Nano-micro letters·2026
Same author

Postoperative CT and Functional Analysis of New Larynx in Different Supracricoid Partial Laryngectomy Procedures.

Laryngoscope investigative otolaryngology·2025
Same author

Causal Effects of Plasma Metabolites on Leukemia: A Mendelian Randomization Study.

Metabolites·2025

Related Experiment Video

Updated: Mar 14, 2026

Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light
07:56

Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light

Published on: September 20, 2017

12.2K

Large Fizeau's light-dragging effect in a moving electromagnetically induced transparent medium.

Pei-Chen Kuan1, Chang Huang1, Wei Sheng Chan1

  • 1Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore.

Nature Communications
|October 4, 2016
PubMed
Summary

Researchers enhanced light dragging in cold atoms, achieving a three-orders-of-magnitude increase. This breakthrough enables a highly sensitive atom-based velocimeter for advanced motion sensing applications.

More Related Videos

Fabrication Procedures and Birefringence Measurements for Designing Magnetically Responsive Lanthanide Ion Chelating Phospholipid Assemblies
09:38

Fabrication Procedures and Birefringence Measurements for Designing Magnetically Responsive Lanthanide Ion Chelating Phospholipid Assemblies

Published on: January 3, 2018

7.6K
Label-free Isolation and Enrichment of Cells Through Contactless Dielectrophoresis
10:38

Label-free Isolation and Enrichment of Cells Through Contactless Dielectrophoresis

Published on: September 3, 2013

16.7K

Related Experiment Videos

Last Updated: Mar 14, 2026

Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light
07:56

Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light

Published on: September 20, 2017

12.2K
Fabrication Procedures and Birefringence Measurements for Designing Magnetically Responsive Lanthanide Ion Chelating Phospholipid Assemblies
09:38

Fabrication Procedures and Birefringence Measurements for Designing Magnetically Responsive Lanthanide Ion Chelating Phospholipid Assemblies

Published on: January 3, 2018

7.6K
Label-free Isolation and Enrichment of Cells Through Contactless Dielectrophoresis
10:38

Label-free Isolation and Enrichment of Cells Through Contactless Dielectrophoresis

Published on: September 3, 2013

16.7K

Area of Science:

  • Atomic physics
  • Optics
  • Macroscopic theory

Background:

  • Light dragging in moving media is crucial for understanding modern physics, from Newtonian mechanics to special relativity.
  • Previous experiments required long light-medium interaction times for significant dragging effects.
  • Electromagnetically induced transparency (EIT) offers a novel platform for studying light-matter interactions.

Purpose of the Study:

  • To demonstrate and significantly enhance the light dragging effect in a cold atomic ensemble.
  • To develop a highly sensitive atom-based velocimeter utilizing the enhanced light dragging phenomenon.

Main Methods:

  • Utilizing an electromagnetically induced transparent cold atomic ensemble to create conditions for enhanced light dragging.
  • Implementing a novel experimental setup to amplify the light dragging effect by orders of magnitude.
  • Calibrating and testing an atom-based velocimeter based on the enhanced dragging effect.

Main Results:

  • Achieved a light dragging enhancement of at least three orders of magnitude compared to previous experiments.
  • Developed an atom-based velocimeter with sensitivity two orders of magnitude higher than the atomic medium's velocity width.
  • Demonstrated the feasibility of using collective atomic states for enhanced light-matter interaction.

Conclusions:

  • The study significantly enhances the light dragging effect in cold atomic ensembles, opening new avenues in optical experiments.
  • The developed atom-based velocimeter offers unprecedented sensitivity for motion sensing.
  • This work paves the way for room-temperature motional sensing using atomic ensembles in various states of matter.