What the HECK are Magnets? (Electrodynamics)

Magnetism has been a human fascination for thousands of years, but where does it come from? Some of it comes from the motion of charge, called electromagnetism. Some even the spin angular momentum of electrons in quantum mechanics. Let me show you how these are one in the same.
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What is Electric Charge?

What is Quantum Spin?

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Crash Course on Magnetism:

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[ScienceAsylum]

Several of you have pointed out that, at 3:08, my magnetic field doesn't include the return arrows that exist within the bar magnet shown at 2:52. I'm well aware of this. The animation glitched whenever I tried to include them and they weren't important for the point I was making. The video was _already_ a week late and it wasn't worth trying to get it to work when I could just leave a black space in the field instead.

[Malikou]

5 years of Engineering studies, 4 semesters to painfully understand these concepts and you did the job in 7 minutes ! Superb video and nice conclusion.

[skyeplus]

"Don't ever jump to conclusions in Quantum Mechanics..." stay in superposition.

[quahntasy]

Quality is outstanding Nick. Partially glad you made us wait for it. You made Electrodynamics

wait for it


Attractive.

[calyodelphi]

This video has done a better job concisely explaining magnetism in low-level detail than any other video on the subject that I have ever watched. You are seriously the most underrated science YouTuber on this whole website! <3

[Burgertronic-vpsp]

You are, without a doubt, my top favourite YouTube video producer. Magnetism is my nemesis, but I've definitely learnt something new today. Thank you Capt Crazy!

[garysymons]

Feynman got very angry when asked on magnetism, but did not think us mere mortals could grasp the electron's spin and so witheld his answer, yet the Asylum gave a nice though short answer which I hope can be amplified . Great video .

[Chris]

Wow. Your “all magnets are electromagnets” explanation was absolutely stellar. I feel like when I got my best maths teacher to date after almost failing end of year exams, and then suddenly getting 90% tests, because the lady actually took the time to explain things.

[horophim]

Love the "we have no idea" answer at the end. It gets not enough credit

[lilacrabbit]

Hello! I've always struggled with physics until a friend introduced me to your channel. I'm currently studying for the physics part of the medicine entry exam and you're the only reason why I'm managing to get more then 2-3 points at a time. Thank you so much, I love your content and please keep it up! You're amazing :)

[oBladeo]

"yes, in a lifetime of millions of years, the last stage takes days" what I never see is a video, even a simple one, describing this timeline of the life of a star.... I hope you'll do one someday. Other channels... guided me here, but yet you seem like a friend from university explaining things at the pub, without saying lies or omitting things... GOOD WORK NICK!

[nooneatall]

"Quantum mechanics. Hold on to your butts" The answer to every question ever!

[rakeshk]

This guy never takes anything for granted. He always gets to the root of it and makes it practically relatable. Even when the concepts are hypothetical and mathematical, he discusses them while pointing to the relevance they hold to everyday reality.. Unlike in most schools where every lesson begins with an unquestionable assumption and ends with an irrefutable conclusion.

[kirkhamandy]

Wow, clicked this first before PBS Spacetime when I had a clear choice, lol

[vinayan]

You are doing what my high school, college, degree teachers couldnt do. They just tell u to byheart the stuff(especially math) so that u can pass in the exams. Sir you have my Respect...

[aakashbhatia]

I have waited for a video like this on magnets since eternity

[waqarhussain.]

Such a genius & humorous Professor 👏.

[ShalK]

Love your work so much! I go in to so many videos thinking I understand the underlying science but after seeing your video I realize how hazy it really was and your video made more of a clear picture.

[ubergeraldine]

Cant thank you enough for this Nick! I was a physics dunce at school... sitting at a hard bench sleeping on my elbows while a husk of a teacher tried to explain with no diagrams etc etc - I now rule the electromagnetic universe and all in a few easy to follow steps!!! Still in my PJs with hair standing on end... Now wearing the badge!!!

[enricolucarelli]

Interesting video, as always. I wonder why you didn’t mention something regarding magnetism that really blew my mind when I found out: the fact that magnetism can actually be regarded as a consequence of applying special relativity to a moving electrostatic charge.