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Eddy Currents
published by the Exploratorium
This site from the Exploratorium you'll find a simple demonstration of the interaction between a moving magnet and its induced electromagnetic field.  As the magnet is dropped down a metallic tube, it induces eddy currents that oppose its fall--an application of Lenz's Law.  The site contains a materials list, basic procedures for the activity, and an explanation of what happens in terms of the electric and magnetic fields produced.
https://www.exploratorium.edu/snacks/eddy-currents
Subjects Levels Resource Types
Electricity & Magnetism
- Electromagnetic Induction
- Magnetic Fields and Forces
- Magnetic Materials
- High School
- Middle School
- Lower Undergraduate
- Informal Education
- Instructional Material
= Activity
Intended Users Formats Ratings
- Learners
- Educators
- text/html
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Access Rights: Free access
Restriction: Has a copyright or other licensing restriction.
Keywords: Lenx's Law, electron, induce, magnet, magnetic field, repulsion
Record Creator: Metadata instance created June 13, 2006 by Ann Deml
Record Updated: Aug 02, 2016 by Lyle Barbato
ComPADRE is beta testing Citation Styles!

Record Link
AIP Format
(Exploratorium, San Francisco), WWW Document, (https://www.exploratorium.edu/snacks/eddy-currents).
AJP/PRST-PER
Eddy Currents (Exploratorium, San Francisco), <https://www.exploratorium.edu/snacks/eddy-currents>.
APA Format
Eddy Currents . (n.d.). Retrieved July 16, 2025, from Exploratorium: https://www.exploratorium.edu/snacks/eddy-currents
Chicago Format
Exploratorium. Eddy Currents . San Francisco: Exploratorium. https://www.exploratorium.edu/snacks/eddy-currents (accessed 16 July 2025).
MLA Format
Eddy Currents . San Francisco: Exploratorium. 16 July 2025 <https://www.exploratorium.edu/snacks/eddy-currents>.
BibTeX Export Format
@misc{ Title = {Eddy Currents }, Publisher = {Exploratorium}, Volume = {2025}, Number = {16 July 2025}, Year = {} }
Refer Export Format

%T Eddy Currents %I Exploratorium %C San Francisco %U https://www.exploratorium.edu/snacks/eddy-currents %O text/html

EndNote Export Format

%0 Electronic Source %T Eddy Currents %I Exploratorium %V 2025 %N 16 July 2025 %9 text/html %U https://www.exploratorium.edu/snacks/eddy-currents


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