Bar Magnet Iron Filings Experiment for Kids

SKU: 33545-SP1

$23.95USD or lower Each

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Earth is surrounded by a magnetic field produced by its spinning iron core. This magnetic domain, while very weak, protects all life from deadly radiation. A ferrite bar is relatively weak permanent magnets compared to an AlNiCo but the strength of its north & south poles are ideal for simulating Earth's magnetism.

This bundle of bar magnets, iron filings and petri dishes can do basic science experiments for 10 or more students. Tests include iron filing magnetic field visualization, repulsion & attraction and paper clip pickup tests; only $23.95.

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Details Parts Specs Reviews Related Products
Details

Watch Bar Magnetic Field & Iron Filings on Petri Dish

Iron filings around a bar magnet behave like the charged particles attracted by the Earth's magnetic field. If you have a magnetic compass, move it in different directions around the magnet's poles & sides. The compass needle, like iron filings, traces out the field lines in 2D. If you use a Magnaprobe, it traces them out in 3D.

This video shows how a petri dish, molecular model parts, iron filings & an inexpensive bar magnet show the details about a magnetic field.

Related information or images
Filings Viewer Assembly

Viewer Assembly
Petri Dish Filings Viewer

Assembled Viewer
Iron Filings Magnetic Field Demonstration

Filings in Action
Parts
P/NDescriptionQTY
22700CPetri dish, 90x15mm high, plastic, sterile, Each for Kit Use10
33476-2Iron filings, 2g in plastic bag10
33544Bar magnet, ferrite, 75x18x6.5mm, red/blue: N/S20
67289CBond, Minit, red, 210mm10
67335CAtom, Minit, Metal, octahedral, grey40
Specifications
  • Use for repulsion-attraction; will not demagnetize when pushed together
  • Stamped "N" & "S" & painted red & blue respectively
  • Paint is guaranteed lead & heavy metal free
  • Will pick up minimum of 20 uncoated paperclips
  • Use with petri dish stand and iron filings to show magnetic field
  • Note (1): Ferrite bars are fragile/brittle. Do not drop on hard floors.
  • Note (2): Ferrite bars are relatively weak & will not magnetize nails or pins. Stronger magnets such as Neodymium Rare Earth or Alnico are best for this application.
Reviews (1)
2020-12-01

Very pleased with the product. The magnets are good sized and have a good field to them. They seem sturdy and not easy to break. Haven't set up the viewing trays yet, but will be using them soon. Excited to have something other than a paper plate for field views.

— Karl
— Indigo:

Thanks for the feedback. We did the paper clip pickup test as outlined in Magnet Experiments for Kids after seeing an Amazon review where their ferrite bar magnets could barely lift a single paper clip. We then found they were just strong enough to demonstrate magnetic fields with iron filings.

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