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Related Concept Videos

Motion Of A Charged Particle In A Magnetic Field01:22

Motion Of A Charged Particle In A Magnetic Field

A charged particle experiences a force when moving through a magnetic field. Consider the field to be uniform and the charged particle to move perpendicular to it. If the field is in a vacuum, the magnetic field is the dominant factor determining the motion. Since the magnetic force is perpendicular to the direction of motion, a charged particle follows a curved path. The particle continues to follow this curved path until it forms a complete circle. Another way to look at this is that the...
Electric Field of a Charged Disk01:23

Electric Field of a Charged Disk

The simplest case of a surface charge distribution is the uniformly charged disk. Calculating its electric field also helps us calculate the electric field of a large plane of charge.
The system's symmetry is in the cylindrical directions across the plane of the charge. As a result, the electric fields created by various surface charge elements nullify each other in the direction parallel to the surface. Thereby, the resulting electric field is perpendicular to the plane. Since the disk is...
Energy Associated With a Charge Distribution01:21

Energy Associated With a Charge Distribution

The work done to bring a charge through a distance r is given by the potential difference between the initial and the final position. To assemble a collection of point charges, the total work done can be expressed in terms of the product of each pair of charges divided by their separation distance, defined with respect to a suitable origin. Solving this expression gives the energy stored in a point charge distribution.
Continuous Charge Distributions01:17

Continuous Charge Distributions

Imagine a bucket of water. It contains many molecules, of the order of 1026 molecules. Thus, although it contains discrete elements (molecules) at the microscopic level, macroscopically, it can be considered continuous. Small volume elements of water, infinitesimal compared to the bulk of the bucket's volume, still contain many molecules. Under this framework, quantized matter is approximated as continuous for practical purposes.
The electric charge can also be subjected to an analogical...
Magnetic Field due to Moving Charges01:23

Magnetic Field due to Moving Charges

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...
Coulomb's Law01:30

Coulomb's Law

Experiments with electric charges have shown that if two objects each have an electric charge, they exert an electric force on each other. The magnitude of the force is linearly proportional to the net charge on each object and inversely proportional to the square of the distance between them. The direction of the force vector is along the imaginary line joining the two objects and is dictated by the signs of the charges involved.
Newton's third law applies to the Coulomb force — the force on...

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Related Experiment Video

Updated: Jun 19, 2026

Experimental Methods of Dust Charging and Mobilization on Surfaces with Exposure to Ultraviolet Radiation or Plasmas
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Dynamics of charged events.

Constantin Bachas1, Claudio Bunster, Marc Henneaux

  • 1Laboratoire de Physique Théorique de l'Ecole Normale Supérieure, 24 rue Lhomond, 75231 Paris cedex, France.

Physical Review Letters
|October 2, 2009
PubMed
Summary

Researchers introduce "events" as dynamical points in spacetime, representing flux-carrying particles from extra dimensions. These events have observable consequences and are crucial in theories like M-theory and superconductivity.

Area of Science:

  • Theoretical Physics
  • High Energy Physics
  • Condensed Matter Physics

Background:

  • In three spacetime dimensions, magnetic sources manifest as singular points or events.
  • Existing frameworks often treat these events as static or passive imprints.

Purpose of the Study:

  • To introduce a dynamical concept of 'events' in theoretical physics.
  • To explore the observable consequences and fundamental importance of these dynamical events.
  • To connect events to established theories like M-theory and superconductivity.

Main Methods:

  • Conceptualizing events as the imprint of flux-carrying particles from extra dimensions.
  • Generalizing the event concept to higher spacetime dimensions and extended forms.
  • Analyzing observable consequences arising from the existence of these dynamical events.

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Finite Element Modelling of a Cellular Electric Microenvironment

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Related Experiment Videos

Last Updated: Jun 19, 2026

Experimental Methods of Dust Charging and Mobilization on Surfaces with Exposure to Ultraviolet Radiation or Plasmas
07:54

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Published on: April 3, 2018

Phase Behavior of Charged Vesicles Under Symmetric and Asymmetric Solution Conditions Monitored with Fluorescence Microscopy
10:08

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Published on: October 24, 2017

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08:23

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Published on: May 18, 2021

Main Results:

  • Events are proposed as fundamental entities, comparable in importance to particles and branes.
  • Universal observable consequences stemming from the existence of events are demonstrated.
  • A framework is established for understanding events within M-theory and Josephson junctions.

Conclusions:

  • Dynamical events represent a significant conceptual advancement in theoretical physics.
  • The study highlights the crucial role of events in understanding fundamental interactions and complex systems.
  • Events offer a unifying perspective across different areas of physics, from cosmology to condensed matter.