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Make your own Amazing Magnetic Fluid!
Poziom:
Temat: Nauka i technologia
A Ferroflud is a fluid containing dispersed nanoscale magnetic particles.
And what does it mean in English?
It's a magnetic fluid.
And today, we're going to show you how to make one.
To start you're going to need some laserjet toner,
a rare earth magnet
and, why not, some vegetable oil.
The first thing we're going to do
is pour the toner into a cup.
We need about 15 ml of this.
Go ahead, have a look. It's all there.
There we're going to put about 2 tbsp of vegetable oil
into that cup as well.
You may need a little bit more than this.
...depends on how much ink you've used.
Now comes to fun part.
Stir it until you get a nice thin consistency.
If it's too thick, it might not work properly.
Once we've got all mixed up we're going to transfer it into a little bit of a smaller jar.
Just so we can handle it easier.
OK. Now let's give it a test.
I'm going to take the earth magnet and put it on the bottom.
And as you can see, the liquid magnetizes
...makes this little needles that pop out.
If you are not getting this effect
you may need a bit of a stronger magnet.
You can your hardware stores to buy are earth magnets. They're not too expensive.
Now, we're going to slide up to the top
and let it hang down.
Let's get a look from another angle.
As you can see, the needles are just hanging down from the top of the glass.
If you pull off the magnet, it will actually just fall right off.
Take a look.
ow, I'm going to take my earth magnet and stick it under my table here.
Once I know where the magnet is, I'm going to pour a little bit of fluid.
Let's get a closer look.
As you can see it instantly turned it into what we've had before .
I'm going to pour a little bit more on here.
You can touch it. You can spin it around.
You may do all kinds of crazy art with this thing.
Let try move it, shall we?
I have my hand under the table and I'm moving around the magnet.
Now, as you can see, I can draw with this.
let's try to make a letter.
You can also move it around and then pull the magnet away.
It turns into the liquid again immediately.
And when you put it back, it pops right back up.
Now, this stuff is not clean so make sure you have some napkins on hand.
And something to clean it all up with.
Well, that's all for this week.
