00:00 Hello and welcome back everyone. Baron here. Today we're going to take a look at
00:05 something called ferrofluid and it was invented 50 years ago by NASA to use as
00:13 a magnetic rocket fluid that could be moved in zero gravity by a magnetic
00:18 field. Today it's actually used in hard drives, speakers, gate board and they are
00:25 looking into use it in biomedicine to actually pilot medicine in the body.
00:30 Today we're gonna look at the behavior, the properties of it. You can see there
00:37 are spikes that are created by the magnetic fields and it looks kind of
00:42 awesome. We're gonna try this with different magnets, different metals or
00:52 different shape of metals and we're also gonna try to transport it through water
00:59 as well. Take a look, when I take it apart from the magnet these spikes are
01:06 created. When I take it back it follows the edge of the magnet. This is a quite
01:11 big magnet I have here. We take a closer look at it.
01:19 I really like the stain it leaves behind that almost looks like lava with
01:34 this lighting as well.
01:37 I'll try to create some waves here.
01:46 Let's try something else. We will try a screw. I will drip some ferrofluid on.
02:02 It's great, like a flower or cactus maybe. I don't know. We can move it
02:08 around with a pipette.
02:11 We will try with a smaller screw.
02:33 You can actually gather quite a lot in the top of the screw.
02:40 Okay, let's take that fluid back and let's try something else. We have a ball
03:00 here with a smaller magnet below. I'm gonna try to fill it with some fluid here.
03:09 Then we're gonna raise it. The ball actually moves around or if it's the
03:16 ferrofluid it's quite hard to see. Now I must say this is my personal favorite
03:27 effect of the ferrofluid. When having that small iron ball on top of the
03:36 plate and lifting it up from the magnet it creates these spikes and that's a rose-like
03:43 thing in the middle.
03:46 The more lighting putting on it, the more appealing it becomes. I really like
04:07 this one.
04:10 [Silence]
04:30 If you're lifting it down it's much smaller patterns and when lifting it up
04:36 it's they become bigger and more apart from each other.
04:43 Okay, I have a ball magnet as well and we're gonna try a bit different behavior
04:54 not much. The other magnet I had was a flat round magnet.
05:01 [Silence]
05:07 This is kind of different because since it's round the middle part is much
05:13 closer to the plate than the sides. That's probably why they are so
05:21 big spikes in the middle. You can see the oil is drawn to the middle of the magnet.
05:34 That's why the structure around it looks like it does.
05:46 Okay, let's try a round magnet again. It looks kind of different. Not so much
05:54 when apart maybe. More like when putting the plate to the magnet.
06:03 [Silence]
06:22 Okay, so I promised as well transportation of the fluid as well and
06:30 I'm gonna do it in this water bottle which I put some ferrofluid in. I can
06:36 gather the ferrofluid and I draw the magnet apart. I have a magnet that I'm
06:44 closing in on. You can see that I can shoot it over to the other side.
06:52 [Silence]
07:01 It looks like about the middle, when it comes to the middle, there is no stopper on it.
07:07 It's gonna go over to the other side.
07:11 [Silence]
07:31 It's kind of difficult as well because it's enough ferrofluid that I can take
07:38 the magnet to the bottle and actually move the bottle. I need to not go too
07:45 close to the bottle because it will move just like that.
07:50 [Silence]
07:59 There is kind of easy to get control of the magnet until it reaches the middle.
08:06 There it's very hard to keep the amount traveling over. We're gonna try with some
08:11 bigger magnet now as well.
08:15 [Silence]
08:18 I would say it's a bit easier with this one. We can travel it up I think easier.
08:29 Yeah.
08:31 [Silence]
08:37 It's a great difference from the smaller magnets here.
08:41 [Silence]
08:47 Yeah. I saw this bottle is actually sold on like eBay and such things.
08:55 Mine I did by myself because I had bought ferrofluid. I just took a small bottle
09:00 and put some water in it and had a magnet. I guess the one that you buy is
09:05 probably have some something in it that don't stain the edges of the bottle or
09:12 the sides of the bottle. You can see mine are becoming more oily the more I play
09:18 with it. But it's really satisfying to play around with it and it's kind of
09:24 fascinating.
09:38 Here I actually succeeded to just travel a little amount at a time.
09:47 Kind of works pretty good.
09:54 [Silence]
10:04 [Silence]
Comments