Related Experiment Video
Updated: May 20, 2026

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
Abstract:
Accidental foreign body ingestion by children is not exceptional and occurs in most cases in children less than 5 years old. The impact is not well known. We present the case of a 31-month-old boy affected by peritonitis caused by several bowel perforations after swallowing three magnets at different times. A single foreign body magnetic ingestion does not often cause trouble, but if the ingestions are spaced out, then consequential complications can occur. This is why, in case of stomachaches in a child less than 3 years or a child with behavior problems, it is important to perform standard abdominal X-ray examination.
Related Concept Videos
Magnetism
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 Currents
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 Fields
A magnetic field is defined by the force that a charged particle experiences...
Diamagnetism
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.
Paramagnetism
Magnetic Force
The magnetic force acting on a moving charge...

