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

Magnetism01:30

Magnetism

Magnets are commonly found in everyday objects, such as toys, hangers, elevators, doorbells, and computer devices. Experimentation on these magnets shows that all magnets have two poles: one is labeled north (N) and the other south (S). Magnetic poles repel if they are alike and attract if unlike. Moreover, both poles of a magnet attract unmagnetized pieces of iron.
An individual magnetic pole cannot be isolated. No matter how small, every piece of a magnet contains a north pole and a south...
Magnetic Force Between Two Parallel Currents01:13

Magnetic Force Between Two Parallel Currents

Two long, straight, and parallel current-carrying conductors exert a force of equal magnitude on one another. The direction of the force depends on the current direction in the conductors.
The force exerted by the magnetic field due to the first conductor over a finite length of the second conductor is given as the product of the current in the second conductor and  the vector product of the length vector along the current element and the field due to the first conductor. According to the...
Magnetic Fields01:27

Magnetic Fields

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...
Diamagnetism01:26

Diamagnetism

Materials consisting of paired electrons have zero net magnetic moments. However, when these materials are placed under an external magnetic field, the moments opposite to the field are induced. Such materials are called diamagnets. Diamagnetism is the response of the diamagnets when placed in an external magnetic field.
Diamagnetism was discovered by Anton Brugmans in 1778 when he observed that bismuth gets repelled by magnetic fields, thus theorizing that diamagnets get repelled by magnets.
Paramagnetism01:30

Paramagnetism

Paramagnets are materials with unpaired electrons that possess a finite magnetic moment. In the absence of a magnetic field, these moments are randomly oriented, and thus the net moment is zero. Under an external field, a torque acting on the moments tends to align them along the field's direction. However, the random thermal motion of electrons produces a torque opposite to the external field and tries to disorient the moments. These two competing effects align only a few moments along the...
Magnetic Force01:18

Magnetic Force

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...

You might also read

Related Articles

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

Sort by
Same author

Management challenges of recurrent venous thromboembolism in advanced digestive cancers: Case studies and therapeutic strategies.

Journal de medecine vasculaire·2024
Same author

French survey found that the use of clonidine had increased in neonatal intensive care units.

Acta paediatrica (Oslo, Norway : 1992)·2024
Same author

Decision-making for extremely preterm infants with severe hemorrhages on head ultrasound: Science, values, and communication skills.

Seminars in fetal & neonatal medicine·2023
Same author

2017 French health authority guidelines for neonates at risk of early-onset sepsis: Adherence and barriers in a tertiary hospital.

Archives de pediatrie : organe officiel de la Societe francaise de pediatrie·2022
Same author

Immunodeficiency and Lymphoma in Jacobsen Syndrome.

Journal of investigational allergology & clinical immunology·2022
Same author

Retreatment of previously treated intracranial aneurysm: Procedural complications and risk factors for complications.

Neuro-Chirurgie·2021
Same journal

Family experiences of paediatric palliative care during hospital-at-home: a systematic review.

Archives de pediatrie : organe officiel de la Societe francaise de pediatrie·2026
Same journal

Knowledge of maternity caregivers on vaccination BCG recommendations and circuits.

Archives de pediatrie : organe officiel de la Societe francaise de pediatrie·2026
Same journal

"CRANIOQUALITY study: Quality of life in children with non-syndromic craniosynostosis after surgery".

Archives de pediatrie : organe officiel de la Societe francaise de pediatrie·2026
Same journal

Chronological evolution of brain imaging of hemiconvulsion-hemiplegia-epilepsy from 5 cases in Mayotte island.

Archives de pediatrie : organe officiel de la Societe francaise de pediatrie·2026
Same journal

Point-of-care capillary blood ketone testing to predict the need for intravenous or nasogastric tube rehydration in children with acute gastroenteritis.

Archives de pediatrie : organe officiel de la Societe francaise de pediatrie·2026
Same journal

Transition practices of patients with inflammatory bowel disease from pediatric to adult healthcare systems. Results from a national survey.

Archives de pediatrie : organe officiel de la Societe francaise de pediatrie·2026
See all related articles

Related Experiment Video

Updated: May 20, 2026

A Paired Bead and Magnet Array for Molding Microwells with Variable Concave Geometries
11:42

A Paired Bead and Magnet Array for Molding Microwells with Variable Concave Geometries

Published on: January 28, 2018

[One magnet is better than two].

M Chevallier1, C Barbier, C Jacquier

  • 1Clinique des urgences pédiatriques, clinique de pédiatrie, CHU de Grenoble, BP 217, 38000 Grenoble cedex 09, France. M.Chevallier3@chu-grenoble.fr

Archives De Pediatrie : Organe Officiel De La Societe Francaise De Pediatrie
|July 17, 2012
PubMed
Summary
This summary is machine-generated.

Foreign body ingestion in young children can lead to serious complications like bowel perforation. Timely diagnosis with abdominal X-rays is crucial, especially for multiple or spaced-out magnet ingestions.

More Related Videos

Combining 3D Magnetic Force Actuator and Multi-Functional Fluorescence Imaging to Study Nucleus Mechanobiology
06:54

Combining 3D Magnetic Force Actuator and Multi-Functional Fluorescence Imaging to Study Nucleus Mechanobiology

Published on: July 5, 2022

A Simple and Inexpensive Running Wheel Model for Progressive Resistance Training in Mice
06:59

A Simple and Inexpensive Running Wheel Model for Progressive Resistance Training in Mice

Published on: April 28, 2022

Related Experiment Videos

Last Updated: May 20, 2026

A Paired Bead and Magnet Array for Molding Microwells with Variable Concave Geometries
11:42

A Paired Bead and Magnet Array for Molding Microwells with Variable Concave Geometries

Published on: January 28, 2018

Combining 3D Magnetic Force Actuator and Multi-Functional Fluorescence Imaging to Study Nucleus Mechanobiology
06:54

Combining 3D Magnetic Force Actuator and Multi-Functional Fluorescence Imaging to Study Nucleus Mechanobiology

Published on: July 5, 2022

A Simple and Inexpensive Running Wheel Model for Progressive Resistance Training in Mice
06:59

A Simple and Inexpensive Running Wheel Model for Progressive Resistance Training in Mice

Published on: April 28, 2022

Area of Science:

  • Pediatric Surgery
  • Gastroenterology
  • Radiology

Background:

  • Accidental foreign body ingestion is common in children under 5.
  • The severe impact of ingested foreign bodies, particularly magnets, is not widely understood.
  • Delayed complications from multiple ingestions can be significant.

Observation:

  • A 31-month-old boy presented with peritonitis due to bowel perforations.
  • The perforations resulted from swallowing three magnets over different occasions.
  • Initial symptoms were attributed to stomachaches, common in this age group.

Findings:

  • Multiple magnet ingestion, even when spaced out, can cause severe gastrointestinal damage.
  • Peritonitis and bowel perforation are serious risks associated with magnetic foreign bodies.
  • Standard abdominal X-rays are vital for diagnosing ingested foreign bodies in children.

Implications:

  • Clinicians should consider multiple magnet ingestions in children presenting with abdominal pain.
  • Early radiographic evaluation is essential for children with suspected foreign body ingestion.
  • Awareness of delayed complications from spaced-out ingestions can improve patient outcomes.