75mm (3") Bar Magnet
This 75mm blue & red painted bar magnet is ideal for doing magnetic repulsion & attraction experiments; only $0.85.
See our blog on Magnet Experiments for Kids for more information and ideas.
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Current Reviews: 1
If you need bar shaped magnets with greater holding or repelling force, see: neodymium magnet blocks.
Watch this video of the magnaprobe in action that shows how to identify a magnetic field around a bar magnet.
Two 75x18x6.5mm bar magnets were placed in contact with opposing poles (N:N). They were released & the distance caused by the repulsive force was measured.
|Trial 1||Trial 2||Trial 3||Trial 4||Trial 5||Average|
Paperclip Pickup Test
Forty paper clips were placed in a 500ml beaker. A single 75x18x6.5mm ferrite bar magnet was dipped into the beaker to pick up as many paper clips as possible.
|Type||Trial 1||Trial 2||Trial 3||Trial 4||Trial 5||Average|
Plastic Coated Steel
4 Stars 2017-04-20
Good strong magnet, not recommended for kids as they break easily when dropped.
Yes, brittleness is their main drawback.