Visualizing Magnetic Field Lines in 3D

Where can I buy this

Stop saying LINES. Magnetic fields are not made of lines.

cool a view of why the earth poles have more ice on a + side then on a - in magnetic thermal flow.

I'll throw in my version!

I like it a lot. I like to make it hot.

I feel relaxed when I see this.🙂

Are the filings charged different? Why do some go north, while others move south?

Where I buy one

ジバニャンというキャラクターがいますので、つぎはデンバニャンというキャラクターはどうでしょうか？

dots moved when his hand close, before the magnet plugin.

how can I get this?

これ小学生の教材とかであったらよさそうよな。 教科書の絵ではあるんだろうけど。