The funny thing is for a lot of the behavior related to spin it's actually a decent analogy.

It actually is analogous. Single particles do not spin in the sense of a top, but possess a quantum mechanical characteristic named spin which does in fact interact through the same laws of angular momentum conservation. This suggests that the literal spinning in macroscopic objects has direct ties to the subatomic qm spin. How they relate isn't entirely understood, but thinking of subatomic particles as spinning is a totally adequate analogy in so far as analogies aren't made to represent the things themselves but rather to provide some similar intuition from related things. Therefore, the behavior of a particle with spin is in many ways analogous to that of a spinning top, without itself spinning =P

The problem isn't spin it's spin 1/2. Integer spins are easy to understand. A Spin 1 particle is described by a vector and a spin 2 particle is described by a matrix which can be understood as the tensor product of two vectors. This tensor product can also be understood as an association of two spin 1 particles to form a composite spin 2 particle. You can then say that a spin one particle described by a vector is a sort of square root, under the tensor product multiplication, of a spin 2 particle. A spin 1/2 is a square root of spin 1 particle in the sense that you can form a spin 1 particle from the composite of two spin 1/2 particles (actually you get a vector and a scalar) . Also spin is a property that can be understood within the Lorentz group (rotations and relativistic boosts) without having to talk about quantum mechanics. Quantum mechanics is instead needed to understand why charged spin 1/2 particles have actual physical applications rather than just being a mathematical trick.

Doesn't She have a nice soothing voice?

Imagine a ball that is spinning, except it's not a ball and it's not spinning.

What? You don't have a fifty-foot diameter superconducting magnet in your backyard?

I could not imagine the videos you would upload if you had a particle accelerator... Though I suspect it won't end well Love your channel

you could use your FULL BRIDGE RECTIFIER!!!!!!!!!!!!!!!

Get together with Brainiac75 and his super magnets!

Yet Mister Sadaghdar... Yet...

No it is not, she is treating people like they are uneducated morons.

Ikr

Listening to her explain amazingly complex things in an understandable way definitely makes great videos

Kind of reminds me of Numberphile.

I loved watching this too. It feels like you having a personal conversation and she explains it to you, instead of a scripted show for KZfaq.

Yes pls, it felt like a teacher explaining cool exciting science stuff to the class, in a way that everybody can understand

Yea, this is just good moment to realize that you have still work tomorrow.

He said that more than two thousand years ago.

@@tahababikir6014 Are you suggesting that civilization is coming to the end of finding out all there is to know?

@@JustinOhio there is no end to finding out all there is to know

@@Shyguy5104 If we have time on our side, nothing is impossible young man. But yeah, knowledge is always increasing, the world evolves...

To be fair to the old man, atoms are pretty small.

"Uh...it's probably not a problem...probably...but I'm showing a small discrepancy in...well, no, it's well within acceptable bounds again. Sustaining sequence." -- Unnamed scientist, moments before SHTF.

Your quote from Asimov reminds me of something Jon Stewart said. I paraphrase because I can't remember the exact words, but it went something like "The last words spoken before the world ends will be 'It worked!'"

@@nahco3994 lol I can hear his voice and see the test chamber just like the day I first played it 20 years ago. Fun fact: Asimov couldn't. He's part of a small percentage of people who have no mind's eye. Probably why his books were dialog heavy.

@@sntslilhlpr6601 Are you high?

@@Good_Hot_Chocolate what they said makes perfect sense. The comment from NaHCO3 is a quote from the game Half-Life.

Because physics must relate to you, and how you feel about it is most important.

@@garethb1961 can you further explain that? I'm pretty interested in Physics myself but I've never heard of that

@@tutumazibuko2510 they’re making a joke about physics relating to how you feel lol. The “can you accept that” is relatable to OP because if you’re talking about... let’s say the speed of light. I say the speed of light is c, and you say no the speed of light is half of c. Then whatever I was going to say next doesn’t matter because first we need to agree on the speed of light. When it comes to physics we first need to agree on something in order to build on that something.

I think it just means the big bang was wrong... not surprised, its kinda aszshole behavior to try and model the begging of the universe, as if we have all the math and physics figured already. you think you would need ALL the math and physics or close to it to model the begging and ending of the universe

@@jshadows Kind of, in a way. What I mean is when explaining a physics concept to a laymen you usually need a bunch of other physics knowledge prior to understanding the topic being explained. So you have to explain these other concepts first and instead of asking if they understand, you are asking if they can except what you are telling them is true. Almost like "do you trust me so I can move on?"

right? This is awesome, feel lucky to access this explanation for free

well said!

I finally managed to sort of understand what spin is. And I study electromagnetism for my uni degree, so that shouldn't be far off!

🙌

We're just following the science! Don't question the science!

That's a nice one.

@@zkeletonz001 Question the science all you want. But don't expect anyone to pay attention to your theory unless you can point to something objectively observable that you can explain, that "the science" can't explain. And of course, you can't contradict anything else that is objectively observable as part of your explanation.

@@paulperkins1615 Uh, my point was about how youtube and other media are silencing anyone questioning/challenging, or even presenting data, that goes against the effectiveness of lockdowns and masks. Those are exactly the kind of "answers that can't be questioned" that Feynman is warning against here. Actual science welcomes questions, new ideas and data in order to test its validity.

Yes i am

@@honky_tonk lol

Higgz Bozo....not!

@@kowjackyow7585 what do you mean?

And not real

At least then there's a reason to need to buy a new one every year.

text....book?

to be printed is to be stale

True

Hilarious joke! The textbooks used now don't even have all the known elements, let alone some brand new not entirely certain result.

Sounds like last year was better for you than most

I rode my K-Mart bike from Great Lakes Naval Station one Saturday in 1991 only to find they were closed to the public to increase the tevatron capacity but rode through the gate flashing my brand new Navy badge and dressed in what was called appropriate civilian attire from Sears. I walked around a bit until a calm man stopped by to talk to me for about 30 minutes then ask me to come back when they were open. The man was Dr. Peoples, the Director of the entire lab!

And how old are you now?

You're welcome

Thats amazing! Such an inspiring guy. I wanna be like him when i grow up

Nobody currently thinks science is done. There are lots of open questions, such as dark matter, dark energy, quantum gravity, and on and on.

@@michaelsommers2356 Yet they are pretty stuck for decades now, b/c no one found something "to work with" ... everything (they experimented on) seemed to conform to the standard model, yet we know there must be something more. This little deviation from the expected wobble now might point into the right direction, or it might be a statistical fluke. We'll see.

@@memyshelfandeye318 dark matter and dark energy are still unproven theories.

@@RodelIturalde They're not theories, they're observations. A theory would explain what they represent.

@@alexandruianu8432 There are currently hypotheses about what they are, unproven hypothesis Also, it's always a little frustrating how the common definition of "theory" and the scientific definition, vary from each other

same here!

I'm clueless here. So what does this mean if you guys don't mind explaining?

@@andresjimenez2436 Basically it means there's more to study and research which is great when you're trying to go into a field where most theories are already well established

The right time to start doing physics!

Which also means it's super exciting for future advances in technology to improve the accuracy and advance quantum engineering to a new level

Can u plz explain it. I actually wanted to know..

@@AKHAN-no1bz just basic wobble of a spinning top is surprisingly complicated. I don't really know too much about the particle "wobble" but it's probably way way more abstract and complicated

@@AKHAN-no1bz Basically if the axis of the top makes an angle with the vertical then the gravitional force exerts a torque on the top, but along with it the changing angular momentum exerts a restoring torque which tends to keep the top upright. This is seen as wobbling of the top which results from the spinning motion of the top. When particles enter a magnetic field they too wobble(even uncharged particles like neutrons) and the scientists say that the reason for this wobble is the magnetic spin of the particle, however no one knows what spin actually is, people define it just by the wobble.

Rotating objects undergo precession which depends on their speed. Look precession up on KZfaq, the amount of things you'll learn about rotating objects and how unintuitive they are initially, will blow your mind.

@@AKHAN-no1bz I think Vsauce made a video about that a while ago.

Ikr!

I can listen to her talk all day.

It's weird that the team seems so disinterested in physics. Hopefully that's just the editing.

@@JosephDavies they're a film crew that probably had a physics class in high school and that's all.

@@amehak1922 Given some of the questions, I assumed they hadn't taken one.

I had a professor in college for a concepts in cosmology class and his passion was infectious. It was such a treat to take his class; it was the only class I always wanted to be at. If every teacher was like that learning would be easy.

This is always one of the top comments on all of her videos, and I totally agree!!

Peanut butter makes me happy 😌 and socks too

Especially this video. Sometimes you see science videos where its clear that they really did not get someone where this was there area of interest. Science girl usually acts excited anyway but this one felt so much more genuine. Like you could tell it was actually related to one of the her areas of research.

That's very cool.

🤯

Can you explain what you mean by “your experiment”?

@@k1ng401 I'm a PhD student, currently working for the Muon g-2 experiment since 2017.

@@giro9414 how amazing! Cutting edge. Please discover antigravity or a warp drive next! I want starships dammit! 😀

Undeniably true.

Known unknowns is where true knowledge begins.

and yet some of the same scientists think having faith in the existence of God is odd. These particles are even stranger than anything you could make up :-), and quantum physics is even stranger...

@@nickyork8901 yes, its absolute arrogance

Explain Like I'm Physics Girl's Editor

it's the sixty symbols format. i love it

This feels like Numberphile

The best analogy I've heard for this, was David Eagleman using a pier as the analogy for the entire mass of scientific data we have, with the ocean it's sticking into, as the things we don't know. Everything we can see from the pier, are the things we *know* that we don't know yet. While everything beyond that, are the things we aren't even aware that we don't know, we don't even know which questions to ask. As you move out along the pier, i.e. learn more, you become able to see more of the ocean(become aware of more things we *know* that we don't know yet).

Totally agree, that's why beginners usually think they are pretty great at what they are doing until they understand and realise that there is so much more to learn.

@@dem4xed Isaiah chapter 40 verses 22 onwards 'There is One who dwells above the circle of the earth, And its inhabitants are like grasshoppers. He is stretching out the heavens like a fine gauze, And he spreads them out like a tent to dwell in.... 25 “To whom can you liken me to make me his equal?” says the Holy One.He calls them all by name. Because of his vast dynamic energy and his awe-inspiring power, Not one of them is missing. 27 Why do you say, O Jacob, and why do you declare, O Israel, ‘My way is hidden from Jehovah, And I receive no justice from God’? 28 Do you not know? Have you not heard? Jehovah, the Creator of the ends of the earth, is a God for all eternity. He never tires out or grows weary. His understanding is unsearchable. (footnote CANNOT BE FATHOMED) 29 He gives power to the tired one And full might to those lacking strength. ( Bible) this is why you will not understand. It will take someone millions of years to understand even a little of creation but Jehovah has promised unending life on a healed planet to those who look to him for the answers Revelation 21 v 3&4 not convinced? For more info without cost www.jw.org but you must be willing to learn x

NEVER UNDERESTIMATE the simple caveman building a fire. For that is just the beginning. The tip of an iceberg. We were here once many thousands of years ago and look at where we are now. History will repeat itself and before too long even the cosmological constants shall bow before the might of the human species, as we develop and reshape the physics of this universe into what ever we want. We will teach the physics of this universe it should NEVER have underestimated the humble caveman and it will learn to bow, bend over backward and even break itself according to our will. Physics will be forced to learn new tricks to better serve us. It will become OUR STUDENT and SERVANT. Humanities RIGHTFUL place in this universe appropriately acknowledged.

@@jordanthomas2031 Calm down there bud, universe wins in the end.

Yeah don't feel bad, even the people studying it don't really understand it that well.. but thats the point. But something tells me we won't find the answers to how the universe works in our lifetime, or for many lifetimes after us.. if ever

I love her for that. She reminds me of myself trying to explain this stuff to my friends after a few too many drinks lol they see me as weird at time but idc! Her and I got passion in this stuff! 😄

wise people like her understand that they are not really smarter but just have information someone else doesnt. :) and unfortunately some people get cocky when they've learned more about a subject. but just like drawing everyone can learn it if they put their mind to it, in the end its all about how curious and interested you are in a topic.

If what your saying doesn't make sense to a 3 year old. It won't make sense to anyone older. Use common concepts and expand on it. "The law of electricity works for all of us. If we use it properly, we can light our homes by screwing a light bulb into a socket. If we stick our finger into it, then we get bit. You're going to get burned. We can burn your house down with electricity or you can light your home with it. You can cook with it. You can use refrigeration--all the great things that electricity will do for us! You do not have to be an electrical-minded person. You don't have to be a genius to do it. A child three years old can push a button and turn the lights on. And one of the greatest electrical engineers in the world, all he can do when he pushes that button is that he can turn the lights on, too. So basically, it does not matter. It will work for you." - Jim Rohn

That's what true passion looks like.

But she *is* smarter than us :think:

And She has a nice soothing voice too. She also looks adorable.

I learned nothing other than that there is something weird

I have thought about an issue that seems to be related to this for a thew months. It effectively dealt with gravity and the cause of the "attraction" this is similar.

It was an eye opening discussion

She said, the more you learn, the less you know....so in actuality, what you learned here is that you don't know as much as you thought....🤯

It's like he's been filming science content for years without ever paying any attention to the actual content. Do you even science bro?

Lmao there will always be stuff we don’t know 😂

Yeah but it's something we did not expect to know that we don't know.

Isn’t that the basis of science? As a materials scientist I love when I am wrong. It only means there is something that I didn’t account for

It sums up all of science in one sentence 😅

NEVER UNDERESTIMATE the simple caveman building a fire. For that is just the beginning. The tip of an iceberg. We were here once many thousands of years ago and look at where we are now. History will repeat itself and before too long even the cosmological constants shall bow before the might of the human species, as we develop and reshape the physics of this universe into what ever we want. We will teach the physics of this universe it should NEVER have underestimated the humble caveman and it will learn to bow, bend over backward and even break itself according to our will. Physics will be forced to learn new tricks to better serve us. It will become OUR STUDENT and SERVANT. Humanities RIGHTFUL place in this universe appropriately acknowledged.

@@jordanthomas2031 calm down Jordan.

@@enormousdinosaur.3103 yeah, that started reasonably passionate but went certainly creepy at the end

@@TheChzoronzon exactly. My man went from admiring physics & the laws of nature & stuff & ended up sounding like some supervillain planning to take over the world & all. 💀

Aliens: "oh how nice, we can cross the US border illegally and mooch off the US tax payer for the rest of our lives"

@@elgatofelix8917 lol

@@elgatofelix8917 okay lol bigot alert!

@@elgatofelix8917 how do you people always manage to bring politics into everything, so unnecessary

@@elgatofelix8917 Well, if they bring their creative potential to help increase US GDP while are regularized as legal citizens to contribute paying taxes as any normal american... I just think US wouldn't be the first place an specie would like to land on earth...

Me too!!

comfy room? There are so many weird contraptions and diagrams. Apart from the lighting it looks like doctor Frankenstein's office.

@@1112viggo 😂😂😂

Same😪

For sure! Being interested in something i cant comprehend is torture

That's straight exactly how these researchers felt, it was enlightening! It's the most exciting thing since the rare compound we found in Venus's atmosphere.

I know something about the subject. But I have the sense that laymen would feel exactly that. I try to consider that, when trying to explain something. I suggested Feynman diagrams to help with the explanation -- they are visually good for laymen.

Don’t worry, anybody that isn’t a theoretical physicist will feel the same way. The math involved in even predicting this would melt most no scientific person’s mind. Predicting what is causing it will melt most physicists minds in the coming future. This answer will a Nobel prise, for sure.

We must try to reduce ignorance to a minimum. Therefore I'm going to play computer games instead of studying. I don't want the perimeter of ignorance to increase by me studying things.

If ignorance is a bounded region outside the circle of knowledge, then growing knowledge shrinks the area of ignorance without changing its perimeter. If ignorance has no bounds, then it has no perimeter to grow.

@@JB52520 the perimeter is on the edge of our knowledge, the more things we know, the more things we know we don’t know. Anything past that are questions we haven’t even asked yet.

Well it would, wouldn't it? It's the same damned circle.

Rolling my eyes... 🙄 Cliche comments are so annoying... I bet when people write them they’re like... “I’m so smart” 🤓 The more we know... The more we don’t know... blah blah blah... Oh just spare us please... 🤦🏽‍♂️

it would help if the producer actually had some physics background

@@0623kaboom but that's the charm of it

@@0623kaboom Who would it help?

And all the photos (framed) put on those walls.

its all words. its all good none of it will make any difference to any of us.

i think physics is not complicated because it is but because is a mess of entenglement between so many theories, phenomenon aand so on if you know what i mean

@@Maradnus you're joking right? If it wasn't for quantum physics, GR and SR you wouldn't have your smartphone or GPS.

@@JJs_playground bro fr and i don't get people who don't have a want to expand their consciousness, like why not know more about what's around us, maybe you'll even gain enough understanding to make something new.

I was searching my words to say exactly that :)

THIS is the most relevant joke to a KZfaq channel ever. Well done.

Wow 😂

@@physicsgirl yup

The last commenter will probably be a moment just before the Big Crunch.

​@@fallinginthed33p not if dark energy has anything to say about it.

Great work!

Congratulations!

I-L-L

Have fun :D

Goodluck bud

Good luck man.

Specifically, a difference in calculation of 1 in 199,203,187.25099601593625498007

@@kalahatze The level of precision we can achieve in physics is crazy.

Me, a nerd

I suggest that she maybe misspoke, leaving out the word _detected_.

kzfaq.info/get/bejne/prmWdrR_vJaUlJ8.html

^Some neutrino music from my teen years.

@@rodchallis8031 Klaatu barada nikto!

Not as commonly talked about by the average person. Not as commonly observed. I’m sure there are more interpretations where what she said is still true.

so THAT'S my issue

A lot of my electrons have swapped with muons over the course of quarantine...

Cuz you HAAVE to be at the frontier of physics, man! Hahaha. Unless you're doing research and your colleague determines you're wrong (which often happens in physics research, actually lolol)

Welcome to the club, buddy. The more we learn about some of the more unknowable concepts, the more we realise just *how much* we don't know.

You can be happy despite that because there is so much more to learn, it is like an adventure!

I wonder how physicists feel

Knowing nothing is exciting. Every day is a new adventure.

Thats the Dunning-Krüger effect for you..

does that make you an applied exceptional human?

Simone, you are a rockstar and a personal hero. USSOCOM deployed fan here.

♥️

As are you! @Simone Giertz

Exceptional enough for your tree house?

That's where the physics adventure begins, finding out more about the way you want to know more about this, how does it works the way it works and the why of it.

It's kinda like jazz. The notes you don't play can be really important. Plus, it's the not knowing things that can be the real motivation. Cesar weeping and all that.

@@shawnhartmann4581 Taoism. The bowl is made of stuff, but the emptiness is useful."

@@majacovic5141 Whoa. I like that!

@@shawnhartmann4581 Lao Tze had some good ideas. Tao Te Ching is a short book.

Thank You! very informative! Well done on your placement there too, 👌👍

😯

Thank you. So interesting.

Muon tomography** super interesting stuff

Makes one wonder about those dense solid stone boxes with lids in the Sarrapeum. What were they trying to keep out? Or let in?

why , where is your friend now? :(

I know EXACTLY what you're talking about, and I feel your pain. I used to have a best friend who was on the same level as me when it came to science and metaphysical subjects (I've always devoured any book about them I could get my hands on). No one except him could keep up with me. He was a bright chap who was great to talk to. We had the same sense of humour, too, and found each other absolutely hilarious. But then he moved away one day when an auntie of his died. His mum inherited the house, and said he could live in it, but it was moles away from where he and I lived (he lived right across the road from me). I was gutted. Totally and utterly gutted. Since then we've lost contact, and I've never being able to talk to anyone in the same way. I miss him.

Lets tslk

😞

@@winningjubbly9712 Of all the living beings on this planet nobody and unknown you and your boyfriend sure were uniquely exceptional!! I feel pretty bad for you too, curse of the super duper special unaccomplished and unknown genius! Wishing my body had but the water for all the tears. Yours is the REAL tragedy.

Agreed!

Mannnn that would be the best thing ever

But Reality is often Disappointing!

Haha. Poor girl being called aunt

I think that would get annoying after a while. Me: Aunt Di, can I have a soda D: So do you know that soda fizzes the way it does when you just open it is bec... Me: Never mind Aunt Di, I'll just have a glass of water...

@@Mike__B that's your aunt Di not mine!