Related Experiment Video
Updated: Jul 14, 2026
08:00
Studying Brain Function in Children Using Magnetoencephalography
Published on: April 8, 2019
Low-frequency transient electric and magnetic fields coupling to child body
1Department of Electrical and Electronics Engineering, Engineering Faculty, Akdeniz University, Antalya, Turkey. sukruozen@akdeniz.edu.tr
Radiation Protection Dosimetry
|May 29, 2007
Summary
Transient electric and magnetic fields induce higher current densities in children than standard power frequencies. This study quantifies these effects on the child body for better residential exposure assessments.
Area of Science:
- Environmental Health
- Biophysics
- Electromagnetic Fields
Background:
- Childhood cancer risk is a primary focus of residential electric and magnetic field (EMF) research.
- Limited understanding exists regarding the interaction of transient low-frequency electric and magnetic fields with the child body.
Purpose of the Study:
- To investigate current densities induced by external transient electric and magnetic fields in child and adult bodies.
- To analyze fields in the 50 Hz to 100 kHz frequency range, relevant to residential environments.
Main Methods:
- Utilized ellipsoidal human body models for computational analysis.
- Calculated induced current densities from specified external electric (1 V/m) and magnetic (1 microT) fields.
Main Results:
- Transient electric and magnetic fields induce significantly higher current densities in the child body compared to power frequency fields.
- Current density estimations were performed for both child and adult models.
Conclusions:
- Transient EMFs pose a greater induction risk for current density in children than previously understood.
- Further research is needed to fully assess the health implications of transient EMF exposure in residential settings.
More Related Videos
Related Concept Videos
01:28Magnetic 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...
A magnetic field is defined by the force that a charged particle experiences...
01:30Electromagnetic Waves
James Clerk Maxwell formulated a single theory combining all the electric and magnetic effects scientists knew during that time, calling the phenomena his theory predicted “Electromagnetic waves”. He brought together all the work that had been done by brilliant physicists such as Oersted, Coulomb, Gauss, and Faraday and added his own insights to develop the overarching theory of electromagnetism. Maxwell’s equations, combined with the Lorentz force law, encompass all the laws of electricity and...
01:31Electromagnetic Fields
Electric fields generated by static charges, often referred to as electrostatic fields, are characteristically different from electric fields created by time-varying magnetic fields. While the former is a conservative field, implying that no net work is done on a test charge if it goes around in a complete loop in the field, the latter is, by definition, not a conservative field; net work is done, and it is proportional to the rate of change of magnetic flux.
However, the observation of Gauss's...
However, the observation of Gauss's...
01:29Plane Electromagnetic Waves II
Consider a plane wavefront traveling in position x-direction with a constant speed. This wavefront can be utilized to obtain the relationship between electric and magnetic fields with the help of Faraday's law.
01:16Induction
An emf is induced when the magnetic field in a coil is changed by pushing a bar magnet into or out of the coil. emfs of opposite signs are produced by motion in opposite directions, and the directions of emfs are also reversed by reversing poles. The same results are produced if the coil is moved rather than the magnet—it is the relative motion that is important. The faster the motion, the greater the emf. Additionally, there is no emf when the magnet is stationary relative to the coil.
A...
A...
01:23Induced Electric Fields
The fact that emfs are induced in circuits implies that work is being done on the conduction electrons in the wires. What can possibly be the source of this work? We know that it’s neither a battery nor a magnetic field, as a battery does not have to be present in a circuit where current is induced, and magnetic fields never do any work on moving charges. The source of the work is in fact an electric field that is induced in the wires. For example, if a stationary conductor is placed in a...