Ferrofluid - The Magnetic Liquid!
Materials scientist and Christmas Lecturer Mark Miodownik demonstrates some of the weird properties of ferrofluid. This liquid is literally 'dripping with magnetism', containing a suspension...
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[MUSIC PLAYING] It's a very weird liquid, this. On the scale of 1 to 10 of weirdness this comes about 433. Is it the blood of some strange machine, you ask? Do you ask that? I ask that. No, it's not. This stuff is very odd. It's called a ferrofluid, or a magnetic liquid, and what's happening here is there's a magnet down there and a bolt in which the magnetic field's been channelled through. And the liquid is reacting to the magnetic field. That's really odd. Not many liquids do that. That's because this liquid has got tiny nanoparticles, magnetite, in it. Now, normally if you put that kind of particle in a water solution, it'll just get ripped out by the magnetic field. In this case, it's been co...
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[MUSIC PLAYING] It's a very weird liquid, this. On the scale of 1 to 10 of weirdness this comes about 433. Is it the blood of some strange machine, you ask? Do you ask that? I ask that. No, it's not. This stuff is very odd. It's called a ferrofluid, or a magnetic liquid, and what's happening here is there's a magnet down there and a bolt in which the magnetic field's been channelled through. And the liquid is reacting to the magnetic field. That's really odd. Not many liquids do that. That's because this liquid has got tiny nanoparticles, magnetite, in it. Now, normally if you put that kind of particle in a water solution, it'll just get ripped out by the magnetic field. In this case, it's been co...
