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)

25 Comments

  1. Rafe Tossked67

    November 7, 2018 at 5:28 pm

    ๐Ÿ™‚

  2. whatever12345678

    November 11, 2018 at 3:50 am

    Did not received information about how do they work. A lot of talking, but not exactly what I expected.

  3. chanchal Srivastava

    December 24, 2018 at 3:00 pm

    Unscientific and old explaination of magnetism…it has been changed..what the shit guys

  4. Stacy Mackenzie

    January 9, 2019 at 7:41 pm

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

  5. Frost IsNotHot

    January 22, 2019 at 2:18 pm

    Aa so im gonna blow my kid with 1 megaton of TNT nice work

  6. Andy Soto

    January 30, 2019 at 8:05 pm

    YEH SO DUMB

  7. Bhekuzulu Khumalo

    February 3, 2019 at 9:06 pm

    Cool video you help me for my school project๐Ÿ˜€๐Ÿ˜€๐Ÿ˜€๐Ÿ˜€๐Ÿ˜€๐Ÿ˜€๐Ÿ˜€

  8. Dusk Daddy

    February 7, 2019 at 8:08 pm

    Is it just me or does the audio suck

  9. Kishan Kumar

    February 8, 2019 at 4:10 am

    ohh now where do electrons come???, the magnetic field has electrons ???? now u confused me

  10. Hugh Ropp

    February 22, 2019 at 12:36 pm

    They answered nothing. That was one big distraction.

  11. elchamba06

    March 6, 2019 at 7:54 pm

    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

  12. Sapam Padamkumar

    April 2, 2019 at 5:29 am

    Whoa

  13. brookenicole91

    April 8, 2019 at 11:04 pm

    Insane Clown Posse will appreciate this video

  14. babita shuckin

    April 10, 2019 at 1:11 am

    This is not true no 1 knows how magnets work scientists are just guessing, they are miricles

  15. imnewtothistuff

    May 15, 2019 at 12:02 pm

    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!

  16. MICHAEL CRASH

    May 16, 2019 at 8:59 pm

    Fuck you. No information

  17. MICHAEL CRASH

    May 16, 2019 at 9:01 pm

    For anyone looking for real information and answers: https://youtu.be/hFAOXdXZ5TM

  18. Aria Repich

    May 25, 2019 at 5:19 am

    Headphone users BEWARE! Lol ๐Ÿคฃ

  19. Chris Allen

    June 4, 2019 at 8:27 pm

    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

  20. Molly Williams

    June 4, 2019 at 9:55 pm

    who came here to revise for gcses but cant understand the big boys shit ahah just me, okay.

  21. Macey Navti

    June 24, 2019 at 8:38 am

    Good video

  22. George Ioannides

    July 18, 2019 at 11:29 am

    Very very very poor explanation. Magnets โ€œhave electrons inside them and thats what attracts stuffโ€. 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.

  23. Minal Gupta

    August 11, 2019 at 4:27 am

    Earth is not like this how you are explaining

  24. ThomasG10mtn

    August 27, 2019 at 4:14 pm

    So since you NEVER explained how magnets work…here's another question: WHY DOESN'T THE SUN PRODUCE THRUST?

  25. LifeUnder TheMicroscope

    September 1, 2019 at 5:14 pm

    Brought to you by PROPAGANDA(chemical corp; keep thinkin one way thought). You would think these absolute no-brainers would at least use a bar magnet while showing the earth like the rest of the false magnetic field videos. Ballsy using a horseshoe magnet. I wonder what a sphere would look like…… Or why there are dual vortices at either "pole?"
    Sadly there are no answer provided but there is some cleaver sleight of hand and they sure do make it look neat.

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