The Finnish company has filed a patent for the idea of tattooing, stamping or spraying ferromagnetic material on skin, which would be connected to a mobile phone.

亚芬兰的家诺基公司最近申请了项纹身专利，这纹身通过在皮肤上粘贴或涂抹磁性物质来和手机连接。

Very few minerals are ferromagnetic, but hematite is one example.

具有磁性的矿物很少，但赤矿是个例子。

When unpaired electron spins line up parallel to each other, you get ferromagnetism, or a mineral that's an actual magnet.

当未对的电子自旋互相平行时，你将见到磁性，或者个实际上是磁体的矿物。

They then applied a magnetic field which, thanks to cobalt's ferromagnetic nature, arranged the particles into thin columns.

然后，的磁性，他们应用个磁场把这些粒子“安置”到了薄薄的柱子中。

And this would be the line for ferromagnetic material.

而这条线代表磁性材料。

Well, inside is a multi-layer conductive material composed of alternating layers of ferromagnetic and non-magnetic materials.

好吧，内部是由交替排列的磁性和非磁性材料组成的多层导电材料。

Again they could be ferromagnetic, quickly responding and becoming permanent.

它们可能是磁性的，迅速响应并成为永久磁性。

And so the relative permeability or mu sub r is going to be a way to determine if this is ferromagnetic, paramagnetic or diamagnetic.

因此，相对磁导率或μr将是判断这是磁性、顺磁性还是抗磁性的方法。

And so ferromagnetic material would be like iron, cobalt, nickel.

磁性材料就像、、镍这样的。

And so it is only a few of the elements on the periodic table that can be lined up like this, being ferromagnetic.

因此， 只有周期表上少数几元素可以像这样排列，具有磁性。