We made quiz questions to help you review the content in this episode! Find them on the free Crash Course App! Download it here for Apple Devices: apple.co/3d4eyZo Download it here for Android Devices: bit.ly/3TW06aP
Sardar jaiveer singh sidhu my class mate always said "everyone is smart in their own way" even if the thing you are good at/ intelligent with doesn't help you in school in can help you in life.
I am no Physicist or Engineer, but i gotta say that Physicist have to be some of the smartest minds on this planet, even smarter than Doctors, and other Scientists They have to have knowledge and deep understanding of Mathematics, and apply it to nature, and be able to think abstractly, Physics literally means, knowledge of nature. Thanks to all the great minds studying nature, and helping Engineers build a better future so our human civilization can advance as a whole for the best.
Being a medical doctor does not make you a scientist automatically. You have to actually work on theories and disproving things. That said, it doesn't mean anyone is less intelligent than anyone else. And as a budding physicist I love that people appreciate how difficult it is.
I completely understand you guys are trying to make videos less than 10 min, but I wish there was a way to slow down these explanations. Great video nonetheless
Starks Review well, these are concepts that have taken entire careers and lifetimes to gain an understanding of.. this is a very brief overview of quantum mechanical concepts
For anyone looking to do reading on the subject but in layman's terms that won't overwhelm you, I highly recommend Quantum Physics What Everyone Needs to Know by Michael G. Raymer. Everything she has discussed in this video is explained in the first chapter of the book, so after reading that chapter and then coming to watch this video, I feel like I understand and can keep up with what she is talking about. Also, I highly recommend you take notes as you read. This will help the information stick in your head as you read, and you won't feel as lost because when you don't understand something fully, you will know as you are trying to take notes on it. This sort of comprehension check is crucial to those of you serious about understanding these topics!
I wish youtubers would slow down their delivery. Especially when trying to absorb complex information like this. It makes it hard to follow when there is just a constant stream of words.
Agree. I’m pretty sure that anybody who genuinely wants to learn something about quantum theory is a mature person used to doing things slowly and methodically. The speed of these videos is more adapted to ADD teens.
You had a point? Was it that too many people 'like' videos before watching them because if it is you might as well save yourself the time and effort of explaining yourself because nobody cares
yomamapoops maybe these people already know a lot about physics and just want to state their opinion on this topic while the video plays in the background
@@nikhileshwar4475 you sir yes you must actually be the very reason for enjoyment of the hearts of the people, of course metaphorically, present at a location of party.
PLEASE PLEASE LET QUANTUM PHYSICS SUB SERIES BE AS LONG AS POSSIBLE! Hopefully they can cover schrodinger's equation also, and the function thingy that looks like a pitch fork.
I am back on board this series! (I lost interest awhile back because I'd already taken physics in high school. *This* is the stuff I'm really interested in. Classical physics is just... not my cup of tea)
very excited about the rest of the series! This video is so content rich. I would suggest to add some levity into the video and perhaps scientists' personal stories. That's what attracted me to the original CC videos with J Green. The pauses for comedy or bits like the "thought bubble" or "open letter" broke up the content quite nicely and allowed my brain to digest the info. Something to consider for future videos. thank you for making these great videos!
This is just perfect in my opinion! Very well explained, not too fast and well understandable. Then again, i have this at Uni right now. But I'd have loved to see the actual blackbody laws pre-planck and planck. Guess i gotta Google away :)
I just don't understand how Physicists are able to come up with Equations describing real world phenomenons. Math itself get very complex very fast, and applying it to the real world has to take some real genius brains. I am always amazed at how intelligent some people can get, and the way they can describe all the real world events mathematically.
I like how you point out that light behaves like a wave. People often claim quantum mechanics is not intuitive. Actually, it is rather surprising we found a tool, namely math, to describe the world outside our commonly observable length, time and energy scale. Let us acknowledge that having intuition of the later might as well be an illusion. It took us a long time to understand Newton's laws.
Samy Hacker In fact it's not the case... the only wavy thing in quantum mechanics is the behavior of the probability of observing a particle at a certain location. The ONLY wavy thing is the "mathematical tool" you use to describe this probability of being somewhere or somewhere else. Particle dont move together to form a wave (unlike water molecules). Be careful when you hear words like "particle is a wave" or "behaves like a wave", its a misuse of language (due to historical reasons... the guys at the beginning of 20th century had some difficulties to find appropriate words to tell quantum effects, so they used pictures from classical physics... and these words stayed in spite of the new perspective gained the last 50 years). So what is important to understand is that a physical theory only gives us a way to view a specific part of the world (quantum mechanics cares about small things isolated from the rest of the world and observed with a big apparatus). The main lesson of quantum mechanics is that IT DOESN'T MEAN ANYTHING to say things like "photon are like this or like that" and to imagine these particle as small balls that behave weirdly sometimes. The quantum way to see the world is only about the INFORMATION you can acquire about the world, given the tools you're going to use to look at it. If you use a certain tool in a certain way (light or electrical current or a magnet etc...) then you will only be able to acquire a certain type of information about the particle you're "looking at" with these objects. This vision may seem disappointing or too restrictive to give a good description of the world... and in fact not at all ! It gives the most precise description of the world we've ever had and more than that, it's the only way to understand the microscopic world ! Are you giddy ? I hope so because I am 😉
you guys really need to simplify these crash courses even further than you already do. I feel as though you are speaking to your contemporaries instead of us out here in the peanut gallery. I'm fairly "educated" -- even got an A in physics 101 in college. but I swear to God I am totally lost when I watch these videos. and I LOVE watching these! the equations are especially difficult to understand, even just on a general level. then again, I'm an artist and I am right-brained. so...
Bucky Barnes you cant really remove the equations. science is about why things happen, not just how they happen. and you need equations to demonstrate all the weird scenarios and other things.
Techically speaking, your brain hemispheres have nothing to do with it, however, the idea of 'right/left' brain, while not anything to do with the right or left of the brain, does help catagorize how people think. Some people are more logically or artistically inclined, it's just that the common term is a misnomer.
At what level, and what in particular are you interested in learning? Physics is a very broad subject, with textbooks covering a huge spectrum of content and mathematical rigor. If you're looking to learn more about quantum mechanics, I would suggest David Griffith's text; it's a good first foray into quantum mechanics, typically used for mid/upper level undergraduates. You'll want a solid understanding of elementary calculus and linear algebra though; you won't get very far into QM without it. If you haven't had any formal physics instruction, you should probably take the typical route, starting with classical Newtonian mechanics and working your way up to the good stuff.
I feel every single physics course should start with the fact that many fields encompass the entire universe, and particles are just epiphenomena of said fields. An excitation of higher energy in comparison to the vacuum state, if you will. And time is the rate of permeation of said excitations. I could never understand physics until I understand this simple fact. I feel that people need to understand how things truly work at the most basic of levels to ever hope to grasp reality. If you don't explain this, you are explaining it wrong. All analogies give you a misconstrued viewpoint of reality that is hard to overcome. Example: the double slit experiment is solved if you realize that the photon IS the field, not the particle. So when the excitation of the field travels through the slit (which, in of itself, is composed of excitations), a piece of the field itself is traveling through both slits, as the field is everywhere. The only thing separating space is the rate of permeation. Particles are higher energy in said field, and this energy is NOT constant. It is spread out through all the universe, but focused into a 'point' that is not purely localized. This is why we think of particles in probabilities. It all makes sense. Perfect sense. But you have to change how you think about physics. I am myself a laymen, but starting with the classic explanation instead of going straight to the quantum field explanation only confuses things for everyone. Not only that, but it feeds into anti-intellectual pseudoscience about quantum woo woo. All because of the misunderstanding of what quantum mechanics actually is.
You were a bit all over the place there in the third paragraph, but I got the gist of it. Anyway, I agree with you on this, man. At least when it comes to understanding how reality actually functions. This stuff is just old. I overwhelming support the more modern ideas of Quantum Field theory for understanding the universe. Though as I said, "at least". The older ways of looking at the universe still have practical applications.
Ummm...no, no it shouldn't. The mathematics required from quantum field theory is immense, and isn't really even something necessary to study most areas of physics (not all of course, obviously). Also, there is currently no verified model of quantum gravity, meaning that it cannot even be used to understand gravity in its current form in any rigorous manner.
Felt like she had a train to catch after this presentation...thereby she was in such a rush. A question to her.... Could you finally catch the train???
But surely it would not be the same photon leaving the electron as entering. The characteristic of what makes one photon that photon would surely have to do with it maintaining identical characteristics to when it first was emitted by a particle and not interacting with any particles for it to be the same photon. Else you might as well say everything is everything aside from potentially dark matter and energy which could exist simultaneously to pre-existing laws but independent from them. This seems less like a physics question and more like a philosophical one.
quantum annihilation is more or less destroying the particles. the anti particle negates the standard particle leaving nothing behind, it's like adding -1 to 1, you don't loose anything but you don't gain anything either.
The idea of light sometimes behaving like a particle and sometimes like a wave is, at best, a misleading oversimplification. I can't really blame Crash Course in particular, as it's a very common explanation, but it's wrong. Light is _always_ a wave _and_ it's _always_ a particle. The thing to realize is that it's _never_ a _classical_ particle. In quantum mechanics, the word "particle" has a very specific meaning -- it's just shorthand for "localized wave function." Essentially, a quantum particle is just a tiny wave. A _very_ tiny wave, which is why it often acts like what we think of classical particles. But it's never actually a classical particle. It's _always_ a wave. What the photo-electric effect proved is that light was quantized -- that means it's a particle in the quantum mechanics sense of the word, but honestly, sometimes it's just easier to forget about particles altogether, because the word has such a strong connotation of "tiny solid sphere", at least for me.
Trying to understand quantum mechanics makes me so angry like if I think about it for more than 1 minute I start getting irrationally angry at all quantum mechanics and wanting to actualy blow them up
A black hole should be an almost but not quite perfect black body. I've seen several different deviations from the ideal in the theory of black holes. The most obvious one is Hawking radiation, an ideal black body only emits radiation based on its temperature, black holes however, are predicted to emit a certain amount of radiation based on their mass in addition to their temperature. Another source of non-idealness is rotation, while a non-rotating black hole without Hawking radiation should be an ideal black body, in reality it's very unlikely for a black hole to form without at least some rotation, the rotational effects of a black hole would interact with the radiation it absorbed and emits in such a way as to not quite match up with the way an ideal black body emit radiation. Finally, and this is one I'm the least confident in, I've seen at least one theory that predicts that for a low mass, and thus low radius black hole some extremely long wavelength radiation might be able to 'miss' the black hole as it passes the region of space it occupies. This is because the region of space the black hole occupies may be too small to actually absorb the entirety of the energy spread out through the wave.
I wished crash course uploaded an extended version instead of simplified so that mortals like me could comprehend this without having to replay several times. But this kind of video is also good for speed studying :D
We made quiz questions to help you review the content in this episode! Find them on the free Crash Course App!
Download it here for Apple Devices: apple.co/3d4eyZo
Download it here for Android Devices: bit.ly/3TW06aP
My mind to me: Did you understand?
Me: Yesn't
Thanks Planck.
Thancks.
You're so high
thats why you shouldnt blaze it before studying
brilliant
You’re right and if Planck never died in his early 40s he would’ve been in Einstein s place in history, that’s shifty.
So good
"Ultraviolet Catastrophe" is what I call it when I get a really bad sunburn.
what is that sign on your profile ? what does is mean...
Lol, that’s hilarious
Erick Xerda unicursal hexagram
Master Therion "breaking your bone" is what doctors call and ouchie bang bang.
Master Therion really stupid is what it is called, clinically
A FAMOUS SAYING: NEVER ASK A WOMAN HER AGE, A MAN HIS SALARY AND WARNER HEISENBERG ABOUT THE VELOCITY AND POSITION OF A PARTICLE.
GOSH!!
I just got cringed }:=)😆
WHY ARE YOU TYPING IN ALL CAPS
*momentum and position for only microscopic particles
gross
OH MY GOD REALLY? WOW
Why am I stupid.
you are not alone
Sardar jaiveer singh sidhu my class mate always said "everyone is smart in their own way" even if the thing you are good at/ intelligent with doesn't help you in school in can help you in life.
Yeah, I'm dumb.
If it's any consolation, you're in the majority.
not even a physicist can figure that out
Brain is offline.
Nap is required.
Yes sooo true i can bearly understand her shes talking so fast which makes it hard to learn which makes me very sleepy
@@denzmageone8711 Welcome to Crash Course
@@denzmageone8711 you can slow it down. But anyway her accent is amazing.
If Quantum mechanics hasn't profoundly shocked you, then haven't understood it yet....! -- Neils Bohr
I am no Physicist or Engineer, but i gotta say that Physicist have to be some of the smartest minds on this planet, even smarter than Doctors, and other Scientists
They have to have knowledge and deep understanding of Mathematics, and apply it to nature, and be able to think abstractly,
Physics literally means, knowledge of nature.
Thanks to all the great minds studying nature, and helping Engineers build a better future so our human civilization can advance as a whole for the best.
As a fellow Physicist, reading this comment made me smile. Thank you for your appreciation of what we do!
Being a medical doctor does not make you a scientist automatically. You have to actually work on theories and disproving things. That said, it doesn't mean anyone is less intelligent than anyone else. And as a budding physicist I love that people appreciate how difficult it is.
that was so corny
If you are smart, then dont be lazy. Then you are useful.
You don’t have to look long to find a idiot doctor, lol.
I completely understand you guys are trying to make videos less than 10 min, but I wish there was a way to slow down these explanations. Great video nonetheless
You could always go back to the parts you don't understand
You have to set the speed factor at "2", then it is ok ...
Starks Review well, these are concepts that have taken entire careers and lifetimes to gain an understanding of.. this is a very brief overview of quantum mechanical concepts
Starks Review go to playback speed and slow it down
You literally can slow it down lol
Time to cook my brain and spend the next 5 hours reading about particle physics, black holes, string theory etc.
CielOuvert try allan adams at the mit open coursewear channel here on youtube
I'd heavily recommend the PBS Spacetime channel for the black hole portion
+
Enjoy your vector calculus and PDEs.
Have fun learning about renormalization group
For anyone looking to do reading on the subject but in layman's terms that won't overwhelm you, I highly recommend Quantum Physics What Everyone Needs to Know by Michael G. Raymer. Everything she has discussed in this video is explained in the first chapter of the book, so after reading that chapter and then coming to watch this video, I feel like I understand and can keep up with what she is talking about. Also, I highly recommend you take notes as you read. This will help the information stick in your head as you read, and you won't feel as lost because when you don't understand something fully, you will know as you are trying to take notes on it. This sort of comprehension check is crucial to those of you serious about understanding these topics!
I felt smart until i read the comments, There goes 2 IQ
intruiging how im currently failing normal physics but watching videos on quantum physics
Einstein is like everywhere in Physics.. !!
Hehehe, he is!
HE IS THE PHYSICS
Am I the 14 year old here?
People: She talks too fast
Me: Watches video at 1.25x speed
I wish youtubers would slow down their delivery. Especially when trying to absorb complex information like this. It makes it hard to follow when there is just a constant stream of words.
replay it then, with a basic organic chemistry / physics background I thought this video had a good pace to it.
Agree. I’m pretty sure that anybody who genuinely wants to learn something about quantum theory is a mature person used to doing things slowly and methodically. The speed of these videos is more adapted to ADD teens.
watch it at 0.75 speed, bruh
@@millieristic Its called evolution lol sorry.
.25x
She's explaining Quantum Mechanics in a simple manner; I'm just like "I like turtles."
Not. Funny.
@@crimsonnite9291 Didn't. Laugh.
This isn't gonna be bohring!
Why? Just why
@@5567-s7s Lot of puns in this comment section.
🤦🏾♀️
41 likes 15 comments within 2 minutes of upload? so many people don't even watch the video before reacting lol
Random people bitching and moaning only a few minutes after upload. Lol!
Random people proving my point
You had a point? Was it that too many people 'like' videos before watching them because if it is you might as well save yourself the time and effort of explaining yourself because nobody cares
Joey Gee you obviously care since you keep posting replies. You assume too much from a simple stated fact I posted, go outside and cool off
yomamapoops maybe these people already know a lot about physics and just want to state their opinion on this topic while the video plays in the background
Everyone waved, so i took part(icle).
Possibly the worst joke I've ever heard. Hats off to you, good sir!
@@carloshoratio5100 laughing out loudly
U must be very fun at parties
@@nikhileshwar4475 you sir yes you must actually be the very reason for enjoyment of the hearts of the people, of course metaphorically, present at a location of party.
VWLZ lol
i had to slow the speed of this video, the particles in this video was acting overly excited...
PLEASE PLEASE LET QUANTUM PHYSICS SUB SERIES BE AS LONG AS POSSIBLE!
Hopefully they can cover schrodinger's equation also, and the function thingy that looks like a pitch fork.
I'm happy that I found this channel though. It never hurts to learn... after all knowledge is power. Remember that friends.
First I want to address that if she was my quants professor. I would be an A student.
I am too young for this but i want to understand :'( xD
bennani mohamed I understood I am 12yr old
Same here
So who spotted Ant-Man?
What is love?
hole - 1st drill press channel
Vladislav?
hole - 1st drill press channel
Baby don't hurt me!
baby don't hurt me
Baby don't hurt me
No more
woah, you're rapping it so fast that I have to slow down the video to be able to think and get this information into my brain😶
very interesting stuff
*hits blunt*
ayy
Bananadine Llanwnda
Lmao this was the same thing Elon musk did 😂😂
I love your profile picture. Iz your sub!
Hey are you planning on doing an episode on Particle physics? (Gluons,muons etc) would really help thanks
Kate 17 she should that'll simplify stuff
Kate 17 - I'm curious too
I think it's there NOW
I am back on board this series!
(I lost interest awhile back because I'd already taken physics in high school. *This* is the stuff I'm really interested in. Classical physics is just... not my cup of tea)
woh ,woh ,woh reduce the speed , you are explaining , your not catching any bullet train
this was too fast, I could not grasp and digest it. It just drove me crazy.
I couldn't understand a word. She was speaking too slowly 🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣
a level physics exam sorted
very excited about the rest of the series! This video is so content rich. I would suggest to add some levity into the video and perhaps scientists' personal stories. That's what attracted me to the original CC videos with J Green. The pauses for comedy or bits like the "thought bubble" or "open letter" broke up the content quite nicely and allowed my brain to digest the info. Something to consider for future videos. thank you for making these great videos!
I have these videos in my search history so the CIA thinks I'm too smart for their mind control.
To know more buy Griffiths Introduction to Quantum Mechanics and Arfken's Mathematical Methods for Physicists.
This is just perfect in my opinion! Very well explained, not too fast and well understandable. Then again, i have this at Uni right now. But I'd have loved to see the actual blackbody laws pre-planck and planck. Guess i gotta Google away :)
Try to slow down at the parts where the viewer requires some comprehension.
Pausing doesn't feel good.
I feel like if I understood this, I'd be a genius.
I just don't understand how Physicists are able to come up with Equations describing real world phenomenons. Math itself get very complex very fast, and applying it to the real world has to take some real genius brains. I am always amazed at how intelligent some people can get, and the way they can describe all the real world events mathematically.
Step by step. First a linear 1D motion, statistics, vectors, ..., fourier transformat, ... diffusion equation, ... wave functions, ...
I like how you point out that light behaves like a wave. People often claim quantum mechanics is not intuitive. Actually, it is rather surprising we found a tool, namely math, to describe the world outside our commonly observable length, time and energy scale. Let us acknowledge that having intuition of the later might as well be an illusion. It took us a long time to understand Newton's laws.
Pretty Much Physics
You can blame Aristotle for the last point.
Can you guys stop breaking my mind..
Then don't watch the video
Çeviren kardeşimin emeğine sağlık, Türkiye'de bilimin gelişmesi adına böyle insanlara ihtiyacımız var :*
Teşekkür ederim kardeşim sizin gibilerin takdirini kazanmaya değer
Never noticed her pronunciation of the letter "h" until it was brought up. 😆🤣
But hank explains much better
Who is Hank?
Hank Green. He’s another guy from Crash Course.
That guy from astrophysics did it better
Yeah, Hank is better by far. This new woman I can't seem to take in what she's saying.
Hi Vsauce, Michael here
3:23 I'm cursed at quantum level😅😅😅
It’s hard keep up. Slower please.
light is a wave of particles simple. i don't get why is it so hard to understand.
Samy Hacker In fact it's not the case... the only wavy thing in quantum mechanics is the behavior of the probability of observing a particle at a certain location. The ONLY wavy thing is the "mathematical tool" you use to describe this probability of being somewhere or somewhere else. Particle dont move together to form a wave (unlike water molecules).
Be careful when you hear words like "particle is a wave" or "behaves like a wave", its a misuse of language (due to historical reasons... the guys at the beginning of 20th century had some difficulties to find appropriate words to tell quantum effects, so they used pictures from classical physics... and these words stayed in spite of the new perspective gained the last 50 years).
So what is important to understand is that a physical theory only gives us a way to view a specific part of the world (quantum mechanics cares about small things isolated from the rest of the world and observed with a big apparatus).
The main lesson of quantum mechanics is that IT DOESN'T MEAN ANYTHING to say things like "photon are like this or like that" and to imagine these particle as small balls that behave weirdly sometimes.
The quantum way to see the world is only about the INFORMATION you can acquire about the world, given the tools you're going to use to look at it. If you use a certain tool in a certain way (light or electrical current or a magnet etc...) then you will only be able to acquire a certain type of information about the particle you're "looking at" with these objects. This vision may seem disappointing or too restrictive to give a good description of the world... and in fact not at all ! It gives the most precise description of the world we've ever had and more than that, it's the only way to understand the microscopic world ! Are you giddy ? I hope so because I am 😉
can you plase tell me which university will be good for doing MS in quantum mechanics in germany
you guys really need to simplify these crash courses even further than you already do. I feel as though you are speaking to your contemporaries instead of us out here in the peanut gallery. I'm fairly "educated" -- even got an A in physics 101 in college. but I swear to God I am totally lost when I watch these videos. and I LOVE watching these! the equations are especially difficult to understand, even just on a general level. then again, I'm an artist and I am right-brained. so...
Bucky Barnes you cant really remove the equations. science is about why things happen, not just how they happen. and you need equations to demonstrate all the weird scenarios and other things.
Bucky Barnes I agree! they need to simplify.. or maybe it's just the way she speaks. :)
Bucky Barnes I'm in the seventh grade. I was like....... uuuhhhh huh.... some of the time. Mostly when names and stuff got thrown around,
there is no such thing as being right/left brain dominant.
Techically speaking, your brain hemispheres have nothing to do with it, however, the idea of 'right/left' brain, while not anything to do with the right or left of the brain, does help catagorize how people think. Some people are more logically or artistically inclined, it's just that the common term is a misnomer.
Reddit trying to teach me Quantum mechanics
That unsolved Rubik's Cube bothered me.
Hello I believe I have met someone else who likes rubik's cubes (do you) and can you solve any?
@@kennybruh3133 I can only solve the 3x3 cube in 2.33 minutes. It's a difficult puzzle.
@@kennybruh3133 Not OP, my best is around 55 second for 3X3.
@@Megasterik yeah in the last year or so I dropped my pb to around 16 seconds or so on a lucky scramble
@@kennybruh3133 That's great.
not sure how i ended up here, but im enjoying this
hello can you recommend me a good textbook i can learn physics? anything that works good for you guys. thanks 😃😃
At what level, and what in particular are you interested in learning? Physics is a very broad subject, with textbooks covering a huge spectrum of content and mathematical rigor. If you're looking to learn more about quantum mechanics, I would suggest David Griffith's text; it's a good first foray into quantum mechanics, typically used for mid/upper level undergraduates. You'll want a solid understanding of elementary calculus and linear algebra though; you won't get very far into QM without it. If you haven't had any formal physics instruction, you should probably take the typical route, starting with classical Newtonian mechanics and working your way up to the good stuff.
Charlie Harris thanks for the great recommendation! 👍🏻👍🏻
The Nelson Physics Texts are really good as well
r/iamverysmart
I feel every single physics course should start with the fact that many fields encompass the entire universe, and particles are just epiphenomena of said fields. An excitation of higher energy in comparison to the vacuum state, if you will. And time is the rate of permeation of said excitations.
I could never understand physics until I understand this simple fact. I feel that people need to understand how things truly work at the most basic of levels to ever hope to grasp reality. If you don't explain this, you are explaining it wrong. All analogies give you a misconstrued viewpoint of reality that is hard to overcome.
Example: the double slit experiment is solved if you realize that the photon IS the field, not the particle. So when the excitation of the field travels through the slit (which, in of itself, is composed of excitations), a piece of the field itself is traveling through both slits, as the field is everywhere. The only thing separating space is the rate of permeation. Particles are higher energy in said field, and this energy is NOT constant. It is spread out through all the universe, but focused into a 'point' that is not purely localized. This is why we think of particles in probabilities. It all makes sense. Perfect sense. But you have to change how you think about physics.
I am myself a laymen, but starting with the classic explanation instead of going straight to the quantum field explanation only confuses things for everyone. Not only that, but it feeds into anti-intellectual pseudoscience about quantum woo woo. All because of the misunderstanding of what quantum mechanics actually is.
You were a bit all over the place there in the third paragraph, but I got the gist of it.
Anyway, I agree with you on this, man. At least when it comes to understanding how reality actually functions. This stuff is just old. I overwhelming support the more modern ideas of Quantum Field theory for understanding the universe.
Though as I said, "at least". The older ways of looking at the universe still have practical applications.
Ummm...no, no it shouldn't. The mathematics required from quantum field theory is immense, and isn't really even something necessary to study most areas of physics (not all of course, obviously). Also, there is currently no verified model of quantum gravity, meaning that it cannot even be used to understand gravity in its current form in any rigorous manner.
Felt like she had a train to catch after this presentation...thereby she was in such a rush.
A question to her.... Could you finally catch the train???
Excuse me my fine lady, I believe that you mean absorbed not destroyed when you mentioned that photons are destroyed...
unknown one Cardantagonist the photons transfer their energy to the electrons so they are destroyed in terms of possession of energy
unknown one Cardantagonist She is talking about the energy.
Sebastian Benz energy cannot be created or destroyed only transferred. The photon is absorbed by the electron and will be re-emitted after.
But surely it would not be the same photon leaving the electron as entering. The characteristic of what makes one photon that photon would surely have to do with it maintaining identical characteristics to when it first was emitted by a particle and not interacting with any particles for it to be the same photon. Else you might as well say everything is everything aside from potentially dark matter and energy which could exist simultaneously to pre-existing laws but independent from them. This seems less like a physics question and more like a philosophical one.
quantum annihilation is more or less destroying the particles. the anti particle negates the standard particle leaving nothing behind, it's like adding -1 to 1, you don't loose anything but you don't gain anything either.
Are You Indian....?
What's wrong with the way she says H?
Americans pronounce some letters differently (to the UK at least, not sure about pronunciations from other countries ) such as 'Z' and apparently 'H'.
Brits pronounce it "haitch," Americans pronounce it "aitch."
I live in England and I've never heard anyone pronounce 'H' as 'haitch'.
I've heard Irish people say haitch, and probably some English dialects, as well (though not RP).
I've never heard it either, but if you think about it it makes a lot more sense this way.
The idea of light sometimes behaving like a particle and sometimes like a wave is, at best, a misleading oversimplification. I can't really blame Crash Course in particular, as it's a very common explanation, but it's wrong. Light is _always_ a wave _and_ it's _always_ a particle. The thing to realize is that it's _never_ a _classical_ particle. In quantum mechanics, the word "particle" has a very specific meaning -- it's just shorthand for "localized wave function." Essentially, a quantum particle is just a tiny wave. A _very_ tiny wave, which is why it often acts like what we think of classical particles. But it's never actually a classical particle. It's _always_ a wave. What the photo-electric effect proved is that light was quantized -- that means it's a particle in the quantum mechanics sense of the word, but honestly, sometimes it's just easier to forget about particles altogether, because the word has such a strong connotation of "tiny solid sphere", at least for me.
She speaks too fast.
Probably because her brain thinks rather quickly.
Stellarskyane or probably because she rehearsed it well.
It's some new age fad to speak fast.
Use a slower playback then🙄
this lady explains really well...a bit too fast but it was fine as am familiar with this theory
great video. if you had done this series 6 months ago. i would have surely done better at physical chemistry
I don't know I just like Wave Theory better than Particle theory nothing against Einstein though.
please upload part 2 asap!!
If any person hear it fast then try it on 0.75x speed
completely random youtube comments sing along!
WHEN I WAS
YOUNG
@@bearlivesmatter6336 I thought that I..
Trying to understand quantum mechanics makes me so angry like if I think about it for more than 1 minute I start getting irrationally angry at all quantum mechanics and wanting to actualy blow them up
Brains and Beauty. Two words...Admiration,Respect
she is sooo beautiful💕💕💕
I'm watching from iraq
Einstein did not win the Nobel peace prize for general relativity...
Why am I not understanding this clearly?
quantum mechanics: the nastiest and dirtiest part of physics
Bae*
Haich
*cursed on a quantum level* Sorry, can't do anything about it. Them's the rules. Don't hate the playa hate the game.
that's how we pronounce it in my country as well. Former British Colony btw
Thanks Mr. James Clerk Maxwell... It's because of you, we are able to taste quantum mechanics..!
I am shocked by QM, and I do not understand it.
Someone should call it quantum NONmechanics. 'wait. what?'
Bohr-ing jokes
Wait, what? Can you start over again? #feelingstupid
thanks God we have pause button because this girl speaks very fast. Good video btw.
my teacher told me to write down the points, do you guys have any?
At 6:09, shouldn't it be "Planck's constant" rather than "Plank's constant"?
Hi dear, amazing narration about quantum mechanics. little slow speach will be helpful to all. thank you. keep it up.
Finnaly.
there should be a separate playlist for quantum mechanics as it is completely different to classical physics.
I know she said black bodies don't exist but isn't a black hole a black body ?
Phantom Darkus
no, it doesn't radiate energy.
It does radiate energy, but not in the way of an ideal black body
Phantom Darkus a black hole isn't an object its a manifestation of messed up space time
A black hole should be an almost but not quite perfect black body. I've seen several different deviations from the ideal in the theory of black holes.
The most obvious one is Hawking radiation, an ideal black body only emits radiation based on its temperature, black holes however, are predicted to emit a certain amount of radiation based on their mass in addition to their temperature.
Another source of non-idealness is rotation, while a non-rotating black hole without Hawking radiation should be an ideal black body, in reality it's very unlikely for a black hole to form without at least some rotation, the rotational effects of a black hole would interact with the radiation it absorbed and emits in such a way as to not quite match up with the way an ideal black body emit radiation.
Finally, and this is one I'm the least confident in, I've seen at least one theory that predicts that for a low mass, and thus low radius black hole some extremely long wavelength radiation might be able to 'miss' the black hole as it passes the region of space it occupies. This is because the region of space the black hole occupies may be too small to actually absorb the entirety of the energy spread out through the wave.
It's as close as you can get, but it's not quite a perfect black body.
is it wierd im trying to understand this even tho im only 15 yr
I am a ten year old, I don’t know why I am watching this !!! LOL 😝
We been friends almost 20 years I don't know how u went back to 10 I think there is some kind of catastrophe u need to figure out
I am more confused than when I started watching.
You must have paid attention, then.
Can we stop using "won a Nobel Prize" as a unit of emphasis... Thanks, History
I wished crash course uploaded an extended version instead of simplified so that mortals like me could comprehend this without having to replay several times. But this kind of video is also good for speed studying :D
It's hard to concentrate when teacher is gorgeous 😂
Today really feels that quantum physics is really fundamental as it connected our everyday experiences:))))
let's iron that shirt better next time okay? :D