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Magnetic Fields - Iron Filings | Electricity and Magnetism | Physics Demos | Physics | College of Science and Engineering | Seattle University
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electromagnetism - If magnetic field lines don't exist, what are these iron filings doing around a magnet? - Physics Stack Exchange
![Magnetic Fields - Iron Filings | Electricity and Magnetism | Physics Demos | Physics | College of Science and Engineering | Seattle University Magnetic Fields - Iron Filings | Electricity and Magnetism | Physics Demos | Physics | College of Science and Engineering | Seattle University](https://www.seattleu.edu/media/college-of-science-and-engineering/images/departments/physics/physicsdemos/electricityandmagnetism/IF-2-mag-in-line.jpg)