/sci/ - Science & Math

[Anonymous No.10679193]

THIS IS FUCKING BULLSHIT

[Anonymous No.10679197]

>>10679193
Wouldn't know, never done it.

[Anonymous No.10679203]

FUCKIN MAGNETS
HOW DO THEY WORK
https://www.youtube.com/watch?v=MO0r930Sn_8
FUCKIN UNIVERSE
WHY DOES IT EXIST

[Anonymous No.10679233]

>>10679193
that's like cutting out the centre of mass and being surprised that the object still has weight

the magnetization is throughout the structure, not at the ends

[Anonymous No.10679251]

If this didn't happen we'd have amazing technology right now. We'd have conquered the galaxy already by now.

[Anonymous No.10679309]

>>10679193
I don't understand how this is bullshit.

Its not. Right?

[Anonymous No.10679326]

>>10679193
WHAT THE FUCK

[Anonymous No.10679330]

>>10679309
No, it isn't. That is indeed what happens when you break a magnet in half.

[Anonymous No.10679361]

>>10679326
You know things are made up of smaller things right? It is the smaller things that give a magnet its field, not the thing as a whole. When you cut a magnet in half, you then get two things made up of smaller things that still produce the field in the same way they did before

[Anonymous No.10679674]

>>10679233
That pic isn’t really a fair representation. One would assume if you made the cut slightly higher or lower, you could end up with a monopole magnet.

[Anonymous No.10679959]

Magnets are atoms, the only unsplittable particle in universe. No one can achieve splitting magnet field.

[Anonymous No.10679960]

>>10679326
This makesore sense the connected N and S negate each other

[Anonymous No.10679967]

>>10679193
For the purpose of this thread, it's sufficient to say that magnetic fields come from little spinny balls all spinning in the same direction
So the question now is
Why would breaking the magnet in half make the spiny balls spin a different direction?

[Anonymous No.10680051]

>>10679193
Heh, nothin' personnel

[Anonymous No.10680290]

>>10679193

It's easiest when you think about electricity and magnets in the same way you think about gravity.

Let N be the top of a slope, and S be the bottom. Just like a ball rolls from the top to bottom due to gravity, so will electrons due to magnetic force. If you cut a slope in half, you just have two shorter slopes. Ball will still roll from top to bottom on both. So you cut magnet in half, electrons move from N to S.

Things start to make more sense if you compare PE/KE equations of electromagnetism to gravitational.

[Anonymous No.10680332]

>>10679193
you just need to read and study more on how the 11th dimension/quantum foam/planck field moves though the molecular structure of the irons atom matrix. you can't see radio waves and they are real too.

[Anonymous No.10680555]

>>10679967
Why wouldnt sticking the broken magnet pieces together again, also form the original magnet?
But it doesnt.

Why dont two magnets just fuse into one big magnet? The little spinny balls are spinning in same direction right, when I apply muscle force to push SN and NS together and hold them there. Why dont this happen?

If you compress the S side with a hammer, so the spinny little magnets are under pressure, you can even remove a corner of the S pole. Why does the N pole then also weaken, but if it was split in half, the new magnet would not be weakened?

[Anonymous No.10680637]

[Anonymous No.10680656]

>>10680051
you'd be surprised how often magnetic source charges and currents are used in applied electromagnetics

[Anonymous No.10680661]

Yes. Claiming there are such things as north and south poles is bullshit.

[Anonymous No.10680695]

>>10679674
Have you ever heard the phrase "not to scale"?

[Anonymous No.10680754]

>>10679193
>>10679203

Actually it's perfectly logical.

https://www.youtube.com/watch?v=QXYYsOTPifE
https://www.youtube.com/watch?v=qjTckApcp_E

[Anonymous No.10680879]

>>10680754
thanks for this

[Anonymous No.10680931]

Why can't you do this?

[Anonymous No.10680957]

>>10680931
The South sides will repel so they don't "attach" in the same way a north and south would.

[Anonymous No.10680964]

>>10680957
But what if you push them hard enough against each other to overpower the repelling force until they stick together?

[Anonymous No.10680979]

>>10680957
What if you were to weld them together?

[Anonymous No.10680988]

What we need is a gravitation Les particle in a perpetual motion machine and then we can use particle accelerators to create new matter but it's really expensive to use them right now

[Anonymous No.10680991]

>>10680979
that could work...

[Anonymous No.10681162]

>>10679193
OMG is that true?!

[Anonymous No.10681204]

Fucking magnets.

[Anonymous No.10681226]

>>10680051
>monopoles
I can't believe their are some retarded physics fags with actually think these are even theoretically possible. It's literally infinite energy.

[Anonymous No.10681355]

>>10679674

[Anonymous No.10681364]

>>10680695
>>10681355
That's a legit shitty pic, stfu attacking him for a valid question

[Anonymous No.10681371]

>>10681364
I too take out my ruler to measure distances on my physics exams

[Anonymous No.10681372]

>>10681226
no they aren't. fully symmetrized maxwell's equations with magnetic charges and currents are perfectly valid. it's just that physically there doesn't appear to be any, but theoretically they can be a very useful construct

[Anonymous No.10681373]

you understand that magnetism is caused by the direction of spin of the extra electrons. "North" is the direction of net angular momentum of the spinning electrons, south is the opposite.

The spins want to align, that's why magnets try to flip the same orientation

[Anonymous No.10681380]

>>10681372
Imagine a bicycle wheel spinning on an axis. Look at it from the top, it looks like it's spinning clockwise. Label that "north"
Look at it from the bottom, it looks like it's spinning counterclockwise, label that "south"

To say you can have a magnetic monopole is the equivalent of saying you can have a clockwise spinning bicycle wheel without simultaneously having a counterclockwise spinning one. It's a logical fallacy, impossible. It's like saying you can have up without down, left without right

[Anonymous No.10681410]

>>10681380
i think you are confusing monopoles and dipoles. magnetic monopoles and dipoles behave very similar to electric monopoles (ie charges) and electric dipoles, except you swap electric and magnetic variables (and a few signs)

[Anonymous No.10681417]

>>10681410
but I am explaining to you what magnetism is, it's caused by particle motion. It's the electric force time shifted by relativity for a moving particle. And a particle can't go without leaving, can't move left without moving right.

In particular in a bar magnet all the spins are aligning in the direction of north, which of course means that in the opposite direction there will have to be a south

[Anonymous No.10681432]

>>10681417
and i'm telling you it is theoretically and practically useful to introduce symmetric maxwell's equations, including magnetic monopoles and magnetic currents, even if they are unphysical

[Anonymous No.10681442]

>>10681432
How is it practically useful if they can't exist in practice?

[Anonymous No.10681447]

>>10681442
So if you are calculating the force at a certain distance from a magnet, you can approximate the north pole as a "positive charge" and the south pole as a "negative charge"....I guess in some sense it can be useful

https://www.youtube.com/watch?v=Li9Vi_-Nufk

[Anonymous No.10681483]

>>10681442
there are many classes of equivalence theorems that allow you to transform one problem into a potentially easier problem to model or solve, often at the expense of introducing something unphysical. these kind of theorems are good for both theoretical and practical applications.

for instance, in antenna engineering, one way to experimentally characterize an antenna's radiation pattern and predict it's field somewhere in space is to measure it's electric field on a plane, invoke Love's surface equivalence which introduces magnetic sources, apply image theory to get rid of electric sources because they don't radiate, and then apply green's function propagators to the (equivalent) magnetic sources floating in a homogeneous background, and derive the fields from those.

this idea isn't so weird. you are probably aware of image theory. to solve for the field of a charge over an infinite conducting plane, you can solve an equivalent problem (in the region of interest above the plane that is) by assuming there is a charge of opposite sign an equal distance below the plane.

[Anonymous No.10681528]

>>10681483
That antenna stuff is pretty crazy

[Anonymous No.10681531]

>>10679193
>>10679203
Magnets are bullshit.

[Anonymous No.10681573]

>>10681531
>MAGNETS ARE A MOTHERFUCKING MIRACLE
ftfy

[Anonymous No.10681592]

>>10680661
This, the earth is flat.

[Anonymous No.10681606]

>>10681592
agreed

[Anonymous No.10681681]

>>10680931
>>10680979
>>10680991
Unironically why hasn't this been done and why won't it work?
t. brainlet

[Anonymous No.10681745]

>>10681681
>>10680991
>>10680979
Any magnetic material is already essentially a huge number of very tiny magnets (magnetic domains, but also arguably individual atoms/electrons) cold welded together. An object made of such a material will have no/low magnetic properties if those domains are not aligned in the same direction as they will cancel each other out. It will have stronger magnetic properties if more of those tiny magnets are better aligned with each other, which can happen under the influence of a strong magnetic field (and tends to get easier with temperature). Magnetic properties decline over time mostly due to random thermal motion misaligning them again.

So you can press, weld or otherwise magnets pointing in any direction and they will hold together so long as the joint is strong enough. Depending on the relative magnetic field intensities the stronger magnet may realign the weaker magnet to its own alignment over time.

[Anonymous No.10681747]

>>10679193
Think of it as fans that blow air in one direction.

[Anonymous No.10681761]

>>10681747

[Anonymous No.10682324]

>>10680931
If you really want a WTF, break one magnet horizontally like that and see how the halves easily stick back together. Then break another magnet vertically so that you split each pole in half.

[Anonymous No.10682333]

>>10679193
Retard

[eqn] \nabla \dot \vec{H} = 0 [/eqn]

[Anonymous No.10682334]

>>10680957
The South sides will rebel and the North sides will have to start a civil war to put them back together again.

[Anonymous No.10682336]

>>10679193
Retard
[math] \nabla \cdot \vec{H} [/math]

[Anonymous No.10682339]

>>10679193
I am the fucking retard, i hate phoneposting.
Regardless
[math] \nabla \cdot \vec{H} = 0 [/math]

Learn about Maxwell's equations pal

[Anonymous No.10682341]

>>10680051
What? But you can get monopole magnets on Alibaba!

[Anonymous No.10683679]

>>10679233
absolutely brainlet question but here goes:
how the hell is a decent magnetic force produced? Wouldnt, say on the “upper end” of that pic, the Ss on the second row deminish the effects of the first row of Ns, and the Ns on the third row deminish the effect of the second row of Ss, and so on throughout the length of the magnet?

[Anonymous No.10683739]

>>10682324
is that legal?

[Anonymous No.10683741]

>>10682341
kek

[Anonymous No.10683837]

>>10679959
>atoms
>unsplittable

[Anonymous No.10683877]

>>10682324
Physically damaging a magnet can demagnetize them.

[Anonymous No.10684304]

>>10681531
I wanna see that except with a glass lid on top

[Anonymous No.10685339]

>>10680754
fuck off with your chaos diagrams
want to make people understand your pseudoscience?
make better figures

[Anonymous No.10685577]

>>10679233
>>10680695
>>10681355

[Anonymous No.10685600]

>>10681373
but why do the spins align for only iron and some other elements doesn't all matter contain electrons so why isn't all matter magnetic?

[Anonymous No.10686427]

>>10679193
YOU'RE FUCKING BULLSHIT

[Anonymous No.10686509]

>>10685600
All matter is magnetic in a sense, if you apply a magnetic field, the charges respond to it, of course. But materials like iron are have microscopic properties that make them easier to align, to the point of a strong magnetic field can turn the a lot of the spins in the same direction.

[Anonymous No.10686758]

>>10680754
100$ this guy goes full John Nash in 5 years or 1000$ in 10 years. If that is you though I have to applaud you as I have never witnessed some shitpost this hard and so well, over the course of 7 years.

[Anonymous No.10687044]

>>10685577
this doesn't explain anything