The Science Behind Magnets: How do they Work? – Stuff to Blow Your Kids’ Mind #2
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The Science Behind Magnets: How do they Work? – Stuff to Blow Your Kids’ Mind #2


(techno music) – [Announcer] This program
is brought to you by BASF The Chemical Company. – Hey, welcome to “stuff
to blow your kid’s mind”. My name is Robert Lamb. – And my name is Julie Douglas
and today we are talking about magnets. – You’ve played around
with a magnet before. There’s probably one on
your refrigerator right now holding up some sort of important
document or piece of art. And we’re gonna play around
with magnets in this experiment. But as we do so, and as we
witness the power of magnets, we’re gonna try to explain
exactly what’s happening. – Yeah, magnets are one of
the rare items on earth that exert control over another
object without actually touching it. So let’s have a look see here. – Let’s witness this force. We have two magnets here. Each one has a north and a south end. Place that magnet here,
let’s watch what happens when I move this one in. Attraction. That’s north to south. Flip it around and what happens? We see repulsion because
north is not gonna attract to north and south is not gonna attract to south. – That’s right. You’re chasing after it
and it is running away. And the reason for this
is because we have a magnetic field and within
this magnetic field, we have atoms and we have a
bunch of electrons in these atoms, and they’re just
pretty hyperactive. And they’re creating
this activity which is giving us this attraction and repulsion. – Wouldn’t it be cool if we
could see that magnetic field? Well, there is a way. And all you’re gonna need, is a magnet, sheet of paper, and some iron filings. Now iron filings are
basically little bitty pieces of iron. And you can buy them, just like this, or you can make them if you have a little parental supervision. You’re gonna need an iron
nail, a file, and then you just file that iron nail down into little pieces of iron. So, if we pour these iron
filings onto this magnet, we’re gonna actually see the
shape of the magnetic field that’s surrounding that magnet. – And it’s really cool because
what you see happening here are these little spikes in the
iron filings at either side and these represent the
north and south poles. And then everything between this, is the magnetic lines
that those filings are actually following. – So there you have it. The power of magnetism
right there on the table in front of you. – So in order to understand magnetism, we actually have to travel to
the very center of the Earth. – Yeah, and when we do, what we find is this solid core of iron. And the solid core of
iron is like a big ball and its nearly the size of the moon. – Right, this is the,
this solid lump is the inner core of the planet. And surrounding that, we
have a molten outer core. – Yeah and this molten
outer core is really cool because it’s almost like an
ocean of iron swirling around. And it’s really chaotic. – Right, it’s basically
a magnetism engine. And it’s producing all of this
magnetism around the globe which is why, if you’re lost on a summer day, say out in the woods, you pull out your compass
and no matter where you are, you will be able to look
at it and see which way points to the very top
of the planet, the north, and which way points to the
very bottom of the planet, the south. – So think about a U shaped magnet, okay? I’m holding it upside down
so you can see that the north facing pole is on this side and the south facing pole is on this side. And everything in between
is the magnetic field. And that’s pretty much what’s
happening here on Earth. So not only does it create this magnetism, but it also acts as a
shield for our planet. – To understand how magnetism
actually protects our planet, we have to travel into space. – And when we do that, we
can look to the sun which is actually pumping out
a ton of energy directly toward us. – This is solar radiation and our planet actually needs this. It heats our world. It provides energy for all the plants that thrive and grow here. But too much of this
would be a very bad thing for everybody. It would be harmful to
our health and it would strip off huge chunks of our atmosphere. – Especially if you
consider something called a solar flare. And this is basically a
storm on the surface of the sun. And when this happens,
it actually emits a huge electrical charge of particles on par of one million megatons of TNT
and that’s a lot of fireworks. And it’s a good thing that
we have this magnetic field which kind of acts as like
an umbrella shielding us from what would essentially take
out life here on Earth. – So when you handle
just a household magnet, you’re toying with the
forces that are both brooding at the very center of the planet, and protecting us in space. – [Announcer] This program
is brought to you by BASF The Chemical Company. (techno music)

100 thoughts on “The Science Behind Magnets: How do they Work? – Stuff to Blow Your Kids’ Mind #2

  1. yeah but what if the earth is flat and the north pole is in the middle of the flat earth and there is no south pole, people who believe the earth is flat are not being proved wrong, I'm undecided but it's hard to believe the earth is flat.

  2. thats some video!haha you think that is so not making eney sence!

    THAT WAS SO STUPID AND WIERED!No afence.but good job i learnrd allot!I mean it!

  3. I know that we teach that the earth is filled with liquid molten iron, but is there a chance that theres about 2000 km of a gas or air between the core

  4. 0:40 "Magnets are one of the rare items on earth that exert control over another object without actually touching it". Had to stop the video there, sorry.

  5. These 2 puppets have no idea what shit they are spewing. They haven't though about it, they are just parroting back the classical BS. Indoctrinated fools doing a disservice to education.

    If anybody here thinks these dumbasses are being smart, wise, or factually knowledgable… you should probably read more books and stop getting your information from patronizing morons who teach you nothing. Like bill nye, james may, and neil tyson.

  6. your an idiot if you think we have a iron core. deepest whole ever drilled is 12 miles up. look it up. tells you that we have no idea what is below 12 miles

  7. uhhhhhh i had to watch this for physical science but every second i was thinking about how my view helped BASF. Cant decide if i want to dislike this and risk more attention (plus, the video wasn't bad, just the company) or not.

  8. Let me to define the problem: force is non object. How non object (not having dimension nor form, rather "balance of forces") can pass from object to other separated object in defined by them way ? Does it help? 🙂

  9. If the Earth's magnetic field was similar to the magnetic field produced by magnets then why are we able to pick up iron and ceramic magnets off the ground? If the Earth's core acted like a magnet then wouldn't magnetic objects be effected differently than gravity? Simply test this hypothesis by taking 2 solid iron balls of equal size and weight. Then magnetize one but not the other. If the Earth's magnetic field was produced by nickel and iron, a dynamo action, then the weight of the magnetized iron ball would now weigh more than the other. Except it does not weigh any differently thus showing that Earth's magnetic field is not produced by iron nor nickle and is not the same as the magnetic field of a magnet. They do not know what causes the magnetic field that surrounds the Earth. It is not like the magnetic field of a magnet and does not originate in the core but like the sun, and recently discovered by the Juno probe, the magnetic field originates near the surface.

  10. 3:12
    The horseshoe magnet should be flipped. South on top, North on bottom… Our earth has south on top (geographic north)

  11. heated iron has no magnetism
    , (it turns out, (a flater earther pointed this out)) that magnetism is created by a spinning ball of plasma, different set of mechanics

  12. I am sorry to add this comment but all this video explains is what magnets do not how they do it – scientists still don't know how magnets do what they do

  13. Excellent article and able to use to discuss properties of matter with our fifth grade science class.

  14. 2: who here tell no the details called compleetion of honesty teaching! That dude skip whole informations! Seriously?

  15. The Russians only drilled down 8 miles, how do they know for certain there is an iron core?? They don't know. They don't even know that the understanding of moving electrons creating the field is actually what happens. It's just BS, there is no proof whatsoever how a magnet actually works, just a theory, an idea that can never be proven!!! And they call that science?????

  16. you guys are calling a magnetic field atoms?   not quite  the permanent magnet has atoms arranged and aligned …but no atoms are flowing a a magnetic field …  more like electrons …energy in vortices

  17. How can they show what the inside of the Earth looks like as the deepest hole ever drilled into the earth is 12 km deep? They are just telling stories about what is beyond that.

  18. if the moon is as big as earth then how is the core of earth as big asbig as the moon it is like the earth is changing sizes

  19. looks like the magnets have good use today. And the attraction between the two are most definitely defiant in the same way.

  20. Lmao ,,, "magnetic fields are a bunch of excited electrons" < yeh right…..absolutely nobody knows why magnets behave as they do.
    These two conceded clefts spew forth the ignorance still found in textbooks.
    It is closer to the truth that in the division of opposing fields as is the case with our obvious stand out ferrous model, akin to the omnipresent inside of the universe , the immediate where vibration can simply be no more rapid or small, between future and past, the crossing of vibration from collapse to expansion to collapse to expansion.
    Note the symmetry repel of mitosis,,,,RNA to DNA ,, the repel, mirror symmetry.. remind you of something ,,,, (MAGNETIC FLUX IS THE IMMEDIATE DIVISION).

  21. Magnetism by itself doesn't explain everything; centrifugal force also comes into play, unless there's a form of energy still unknown.

  22. There is no top or bottom of the planet is floating in gravity where there is no up or down. Also planets go counter clockwise or clockwise around the sun or who knows it all depends which angle you see then from

  23. So a magnetic field is a bunch of hyper active atoms and electrons causing a bunch of chaos, what a bunch of bullshit! Please quit making YouTube videos for kids you are ruining their minds, You have absolutely no freaking idea what you are talking about. This explanation is even more far fetched and ridiculous than the "virtual photon" argument current scientists are saying causes magnetism!

  24. I'd like to know who drilled to the center of the earth to positively identify what the core is made of. Should be an interesting read

  25. Very very very poor explanation. Magnets “have electrons inside them and thats what attracts stuff”. Same goes for all materials as all atoms have electrons not just magnets. The explanation lies on the electrons orientation, not merely their existence, and also in the effects of general relativity. In this video you explain absolutely nothing but spurred out some facts about how things work but not why they work they way they do.

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