Considering the highlighted course was about making bread, it seems more than mere coincidence that today's show should have an oven holding a prominent role. One for meauring how hot things inside might get. I can practically smell the experiments getting conducted.
Please - never pronounce Kirchhoff like that again. www.howtopronounce.com/gustav-robert-kirchhoff/ Keer-kof or the Anglicized Kirk-off if you must, but never what was done here.
German scientist have contributed so much to modern science, that would have probably been the one thing we were most famous for in the world if it weren't for .... well, the other thing...
I know equations can be "scary" but you should include them in your shows. Dont need to elaborate on them or anything. Just like pop them up so we can see what they look like.
Well, it would not make any sense really. He gave you a name for them so you can look them up if you want but there is no use for them to show up here - that's just extra work for no reason. And if you can't be bothered to look them up, then you are not really interested, so we go back to the start and the futility of the extra work required. It is actually a teaching technique - you tell people a very good story, make them interested, then the will go and learn something themselves, which is a more efficient and healthy way of learning. That is one of the reasons why people arguing with Flatearthers are just wasting their time. A flatearther came up with his "knowledge" by "looking for it", he "investigated" and so on. So, psychologically, it is accepted more than if someone else comes along and tries to teach you something, like Earth being a globe. The first part is you "discovering", the second is you being told something. All good teachers actually just aim to get you interested - and then the magic happens, you start learning yourself because you WANT to know, you WANT to learn... not because you have to and some bloke is forcing you to read a book or something. That is why SciShow and many other like them give you a general story, an interesting story, and give you some key names and terms so that you could CONTINUE your search and learning, if they managed to get you interested. Them just giving you everything on the plate is classic school format that is proven to be bad actually.
@@Wustenfuchs109 I suppose, i already know most of the equations as a physics major, I just like seeing them in the video, it makes it more entertaining to me. Though your argument doesnt really make sense if you think about it. You say if people are interested they will look it up themselves and learn it better that way. Isn't looking it up exactly the same as someone telling you what it is, assuming you're interested? Unless you do the work yourself of many centuries of physicists building from the ground up to what we know now then everything you learn will be because someone told it to you. What difference does it make if it's from a sci show episode or from a textbook?
@@foreverofthestars4718 It makes a lot of sense and that is why modern presenters do it. I am a physicist too but I also learned a bit about presenting to a crowd (or simply, teaching mechanisms), that is why I know what it is that these people, and many more channels like them (who get prizes for their educational work). Their job is to get you interested, to dip your toes into the water. Formulas and deeper understanding is for you to uncover. Slapping a formula, without explaining it, is not only a waste of work (people who don't know it, it would not mean a damn thing to them, those who know, for them it is pointless) it can actually repel people who'd feed intimidated by them. But if you don't understand the psychological difference it makes between you looking something up yourself and someone telling you, then what ever I say would fall on def ears. If you want to understand, go and learn about teaching techniques. Just telling people information for them to memorize is actually the worst way of teaching. Telling them just enough for them to get interested and then letting them dig themselves is, so far, the most effective. It is being used from primary school up to the elite colleges where your professor just gives you the basics then gives you a shitload of homework that you CANNOT do with a basic class but he makes story basic but very interesting so you are willing to spend time and get to the details so that you could work out a homework problem. Knowledge gained in that was is by far that of the greatest quality. Doesn't make sense to you? Fine, not everything has to. The fact is, it works.
Planck saved physics from ovens And now a century later Planck's constant has saved the kilogram and other SI units. Planck had saved physics yet again.
@@martinglendrange996 It's semi possible if there's a way you can have negative gravity. I wouldn't be surprised if it was possible, as the equations work fine either way, but math doesn't always match reality.
As an old physicist, I was recently thinking about the black body problem, and I was about to go dig into its origins - I recall some of it but not all the details. This video fit the bill perfectly! Thanks for making it.
Einstein threw a constant into his equations of relativity because otherwise gravity would lead to a nonstatic universe. He threw it out when Hubble's work showed the universe was expanding, and called it his greatest failure. When it was discovered that the expansion of the universe was accelerating, the equation still holds as long as the constant is positive instead of negative.
Physicists: We discovered all new types of particles by smashing subatomic matter together at near light speed, mapped out a gravitational highway in our solar system, and discovered a relationship between space and time. Me: (Pulls out an oven) Physicists: Confused, terrified screeching
@@fevre_dream8542 basically Einstein sobbing in his death bed because he wanted to prove that the probabilistic theory of quantum mechanics was false after he got burned by Niels Bohr.
Finally! Thank you, Hank. I've been wondering about the details of this for so long. I was especially stuck trying to understand the "black body radiation" term. Much appreciated.
Wow, I was so engulfed by the Wien - Rayleigh problem, that I totally forgot the video was about quantum mechanics. When Max Planck came into the picture and made the leap to discretized packets, I had a real M. Night Shyamalan moment. One of this best SciShow episodes I've ever seen!
"Einstein" is one of the most German surnames I've ever heard. He's always depicted in cartoons as having a very heavy German accent. How does anyone not know this?
@@lordgarion514 This is old, but he did actually have German citizenship until 1896 (age 17). He only acquired American citizenship when he was 61. While you can be 'from' multiple places, living in a country until adulthood does normally mean that is the nationality you are perceived as, even if you don't hold citizenship.
@@Chris-rg6nm I don't think that's how citizenship works. Someone trying to kill you doesn't change your nationality, but I can see how someone would want to reject it as a result. I don't think he's either of those two nationalities now, cuz I think he's dead. He held German citizenship one point and then Swiss citizenship at another. Later he acquired US citizenship. These things are time-sensitive, in case you didn't know.
The point is: German education and cultural development was excellent at the time. The amount of smart and wise brains that country produced was insane. Now it's a shithole though.
@@lordgarion514 So, if you are born in America and grew up there, then get citizenship in Canada as an adult and later when you are in your 60s get a citizenship in Germany. Would you say that you are American or Canadian-German ?
I guess sometimes engineers have something common with scientists. A broken miracle that somehow works optimally, you have no idea how it works and why did you do the way you did it.
I guess sometimes engineers have something common with scientists. A broken miracle that somehow works optimally, you have no idea how it works and why did you do the way you did it.
I literally watched The Action Lab the other day talking about a black body, but he used a box with a hole painted in Black 2 paint. I prefer your video 😀
Fortunately they're not degenerate energy states, and after solving the schrödinger equation for this video, the like outweighs dislike by a factor of h-bar divided by the inter-molecular distance between two molecular hydrogens in the ground state.
Watching this was a mistake. I'm getting thousand-yard-stare type flashbacks to my Physical Chemistry class in college! Most interesting class I've ever had by far, but.... *THE MATH!* Oh, the math!
I still have my book and like to reread the first chapters on the basics of quantum mechanics, but I really had a new respect for quantum physicists after that class!
Literally Studying for a quantum mechanics test right now.....I can assure you, the only thing that makes sense is that nothing makes sense and just accept it. :-)
@zztop3000 anyone saying quantum mechanics makes sense or that they understand it... doesn't actually understand quantum mechanics. That's the thing about it. It doesn't make sense. But it works for what it's used for, so they keep using it until something better comes along.
@@Sanquinity Theoretical physicist Sean Carroll makes a good case for the many worlds interpretation of quantum mechanics by Everett which does make sense, actually (some implications sill have to be worked out though). But as far as I understand it, it's the most plain reading of quantum mechanics that states that there are no uncertainties but all possibilities described by the equations are actually real (the cat is dead and it's alive and there are two separate universes for each... universes branch out with every possibility which means there'd be a lot of new universes all the time) but only when you observe the outcome you find out in which universe you ended up which has a certain probability. The Kopenhagen interpretation is just the standard for teaching students at the moment and has kind of dogma status. The formula works, so they don't care about interpretation. It states that the act of observation makes the probability "collapse" into a concrete outcome. Before you observe, the cat is in a superposition of being alive and dead, whatever that means. If you are working on other interpretations of quantum mechanics because you want it to make sense, you won't be taken seriously, apparently (editors of physics journals have even publicly stated that papers which attempt to interpret quantum mechanics don't have to be read but instantly go to the trash can).
Paulo Marques Dude I don’t like or dislike the theory. Personally I couldn’t really care less, my area of interest is pure math, but I look into quantum mechanics on a surface level sometimes to fill my spare time, and I made my comment because I’ve seen articles fairly recently talking about some research that has shown pilot wave theory to be wrong in one specific aspect.
11:14 who thought Einstein wasnt German?? where else did ppl think he was from lol? ok he had Swiss citizenship but he was obviously German to any sensible person
10:27 *That moment when you realize the name Quantum Physics is derived from the quantized energy of particles and suddenly the world makes too much sense.* Well, just read up on some quantum theories, the world will lose all sense in short order!
dev02ify Best off just reading The Elegant Universe by Brian Greene. That’s the closest you’re going to get to understanding quantum mechanics without an actual education on it
The Action Lab did a neat video about a hole in a box capturing light extremely well, like the oven they used in this video. Kind of neat to see a part of this video in practice (in another video).
And we're asssuming that there can be a Unifying Field Theory, and not that either or both theories are wrong. Instead, both theories are treated with a reverence normally assigned to saint's bones and the Ka'aba.
You know after all this time this presentor is still the funniest and most interesting to watch. I love it when he says "basically ... broke physics/science" its a personal favorite. Please dont let him find something else to do, pay the man well. Keep it up Hank
Well, this barely scratched the surface of quantum mechanics. All he really said is that things are quantized, and that "all the things about quantum theory arise from that." That's true - but it's not a description of any of those things. Not that I don't think the video is good - I don't think it set out to explain quantum theory.
I'm from Germany and Einsteins achievements are such a proud history of Germany that it baffled me anyone could think differently. Wikipedia says he lived the first around 55 of his 76 live years in Germany.
Then, how many degrees of separation are there between quantum tunnelling and the Kardashians' You Tube channel? No, I don't really want to know it. Leave me innocent of this last murder.
I asked different people, watches different shows, looked up half of the internet and noone could explain it good enough 😪 and then comes SciShow 🥰 it took only 12 minutes to explain my first semester of chemistry/physics 🥳 thank you guys 😊
As always, I greatly enjoy your videos Hank. FYI: Albert Einstein was born in Ulm Germany, the same place I was stationed in the US military. It's a nice place.
This story is fascinating :-o ... brings me back to the days when I was bending over an equation for prime numbers. Strangely the only conclusion I could draw given the mathematical tools I had at my disposal was to conclude that prime numbers are an identity and by extension ''one'' and ''zero'' had to be included into this group , which in a way goes against the basic definition of primes ... or the underlying logic of mathematics we take for granted. Maybe someone else will read this , get some inspiration and be able to pick from there or simply figure a better explanation.
0 is indivisible to all because interpretation of said divison without context is hopeless. 1 should be a prime. Aside from -1 there should be no prime in the negative. Yeah rules are rules can't really do anything 0,1,-1 are avoided entirely.
Zero is the antiprime since with zero as the top number in a fraction (I think that's the numerator) you can put any other number on the bottom and it will equal the whole number zero.
I don't think he "despised" it - I think he just thought it needed more work. He thought we'd find more down there under the hood, and that in the end it would all be deterministic. And he passed on before Bell and the experiments based on Bell's work conclusively proved that not to be the case.
What bothers me most is that this theory is more than 100yrs old and when I discuss the weird nature of it with my friends (engineers and science grads) they look at me like i am a crackpot. problem is the education system where they mug up the theory to pass in exam and not even profs seems to care about it. same goes for Theory of relativity. I explained twin paradox and they all dismissed it as a joke but when Nolan's Interstellar came out they came to me to understand what happened in the movie.
@@ogungou9 - Any country. Engineers think in terms Newtonian... unless they are electronic engineers maybe or specialized in space exploration. Engineer is a technical career.
@@LuisAldamiz : @Luis Aldamiz : in France, any engineers and science grads are taught at various levels some notions in quantum mechanics too depending on the course/cursus (since their first years after high school, generally in the courses/cursus named Math sup and Math spé, to begin with ...) In fact in France the first notions of quantum physics begin in the last year of high school in Physics when you have chosen a field of science and/or technology at the end of the first year of high school (for the seconde and last year) ... as well as at the first years of university, if you continue in science and technology through university. At least it was like that when I was in high school (I'm 49 now), and I don't think it's any different now. So yes, I'm really baffled by what I'm learning from gthakur17, skeptical even. In France most engineers would not react like what gthakur17 says, unless they are crackpots of some sort talking about electric universe and other poppycocks.
@@ogungou9 - I don't know which is the curriculum now in Spain but I have several engineer relatives, incl. my dad and a brother, and I'm pretty sure they know only very generic concepts about quantum mechanics, at least from studies (they surely learned more from private readings and watching TV/YT). You don't need to know the Schrödinger equation to build a bridge or an engine. It may be more useful in electronics but otherwise...
@@LuisAldamiz In France when you want to become a physicist, most of the time, you start above all by entering an engineering school for at least 5 years, but after t (some time it's through university) ... So I guess we prefer that our students have a solid general culture, solid foundations in the scientific field as soon as possible ... But now I understand why there is debates in France about how there is too much too soon to learn, for exemple in the two first years after high school (in math sup & math spé for exemple), compare to other countries (let's say Sweden, randomly) that produce scientists and engineers at least as good as ours. We call this burden 'bourrage de crâne' ...
That title stopped me dead in my tracks for a full five seconds. It's not even a click bait title, it's a word salad title of madness and despair. Love it.
Not dumb! You just haven’t gotten a full foundation yet. You may not know all the terms. That isn’t you being dumb. That’s you not knowing something. It’s okay!
Watch the crash course astronomy video for light. It will explain fairly well. Something explaining spectroscopy would work too probably. I will briefly try to summarize what you need to know to understand this video though: Basically, light is composed of particles called photons. When photons hit an atom, they cause electrons to jump an orbit. Larger orbits are more energetic, after all, and light is energy. Anyway, those electrons that took in the light energy and jumped orbits are now "excited." Eventually the electrons will lose that energy again, or become "grounded" and they will emit it back as light. They will then go down an orbit level. You can think of the electron orbit levels as a staircase. You can't go up or down half a stair. You can go up two stairs, or down one stair, but you can't go up partial steps. Anyway, the more energy an atom has, the more excited the electrons get, so they jump up to more higher orbits (aka go up more stairs.) That means when they go back down to ground level they will emit more energetic light since they will be losing more energy. More energetic light has a smaller frequency, hence it is "bluer." That is because the long wavelength end of the visible light spectrum is red and the short end is blue and purple. Every atom has a different "staircase," so they can only emit certain wavelengths of light, and which wavelengths they emit depends on how many "stairs" they went down. You can actually use the wavelengths of light matter emits to identify what atoms it is made of as a result, since different atoms have different "staircases," so they emit light in different spots on the spectrum. This video was basically just scientists accidentally discovering that atoms had "staircases" through math, as opposed to say atoms having a ramp of energy where the electrons could just go up and down an energy amount. So yeah, they discovered atoms can only absorb or emit certain exact packets of energy. These packets are the quanta in quantum mechanics.
*_...quantum physics, always was, obviously, (in elementary school), the effect of quantum atomic electron orbitals-(it's what keeps atoms from collapsing; and also gives rise to a theory of subatomicals)-it's only when you get to college that quantum fields, gets fun..._*
You should have shown the equations (maybe even explained them shortly) cause they are really not that complicated and would’ve illustrated the issue further. Apart from that, really well narrated!
@@JonesP77 Yes, there are always many scientists involved in anything. And they always are from multiple countries. Quantum mechanics also needed DeBroglie, Dirac, von Neumann.. and Schrödinger was also not technically German, but from Wien. Yes, there are many amazing German scientists. As a student of the KIT I of course know that. But no one country can claim a field of science. And I think thats part of the beauty of it all
Why must the Universe be 'weird'? Humans are the only ones (that we know of) that thinks that Quantum Mechanics makes the Universe weird. The entire observable Universe seems to be just fine with Quantum Mechanics, so maybe it is our primitive and naïve notions of normal that actually are what are weird.
While i generally agree with you, weirdness is subjective To (most) humans it *is* weird, because it's not like the everyday classical mechanics we all know and usually love
You see that's exactly what the use of the word "weird" suggests in the first place. It says a lot more about our understanding than it does about the state of the universe.
Interesting position. I feel obscurely it must have to do with the anthropic principle, but my horrible flu prevents me from thinking clearly. I mean, of course it is weird TO US. We tend to interpret the world starting from what we perceive. To understand quantum physics, we need to jump to the abstract understanding of a reality that contradicts all our perceptions. And we arrived to do it way before being neurologically ready to grasp any of it smoothly (if we ever will develop that way before extinction, which I doubt). This is what makes it weird. Then, since the concept of weirdness is a construct internal to the human species (until someone finds a way to ask the dolphins or the tarantulas) and we are studying the universe for our own understanding of it, nor for the Pizzikatelzians' from Ceti Alpha 5, nor for the pandas', I guess we are authorised to call it weird for our own purposes. Aren't we cute, though? Squeezing our limited minds to the last drop to get a glimpse of what we will never be able to experience without resorting to the religious shortcut? I love us. Except when we use the glimpse to make nuclear bombs. Maybe we are not that cute. Edit: I don't own any of the planets named above, which are intellectual property of a Mr Roddenberry. Plus, no brain-tunnelling armadillos were harmed in the making of this comment.
Germans and ovens? 😬 You're treading on thin ice, man. Careful! j/k! (Geez! I know it's a horrible reference and a terrible joke, but come on, it was so obvious. ... Somebody had to say it. 😅🙄)
That explanation of charges vibrating and giving off radiation makes so much sense to me now. So many things make sense now. I'm a 5th year phd in chem focusing on spectroscopy and the simple movement of electrons causing light never occurred to me. Wish I'd found this video when it came out, but thank you nonetheless.
A relative of mine is a professor of chemistry, and I asked him how much quantum physics they studied and employed regularly. His answer was "none." I wish more people would realize that chemistry is basically applied quantum physics.
@@jimmylin7233 You can have a long successful career as a chemist, without ever using quantum mechanics..... In fact, almost no chemists even have access to the equipment needed to do chemistry at the quantum level. Most likely your neighbor didn't have any of that equipment, so no, he wasn't doing applied quantum mechanics. Chemistry itself will tell you what does what when mixed with that. Quantum mechanics tells you *WHY* it happens.
@@lordgarion514 No, no, I agree, it's not necessary to know quantum to be good at chemistry. My point about chemistry being applied quantum is more about how quantum physicists figured out atomic structure, electron orbitals, charge balance, valence electrons, VSEPR theory, and energy levels, and that served as the basis for a lot of theoretical chemistry work that came along, including basically all sorts of spectroscopic analytical technique, that then evolved into experimental and then practical chemistry. For example, I view the Lewis theory of acids and bases as applied quantum theory, rather than a "just chemistry." But again, you're right - a background in quantum isn't necessary to be a good chemist. However, I contend that it can help.
@@jimmylin7233 Of course it can help, depending on what you're doing. More knowledge is always better. But just because Lewis figured out how things worked, using quantum mechanics, doesn't mean you need to know how it works to use it. Just like we don't know how our medications do what they do. We understand a few levels, but when you start looking deeper, we don't even know how our OTC meds work.
My circuits teacher called Kirchhoff the king of obvious, he kind of created the sphere cow in circutis as well, he put into laws conservation of energy, all current that goes into a node, has to exit the node, kind of the perfect emitter
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Um Prity shore stars are perfect black body's or at least that's how all of astronomy treats them
6:47 was it intentional?
(when Hank waved his hand and moved text away)
It was a nice edit !
Considering the highlighted course was about making bread, it seems more than mere coincidence that today's show should have an oven holding a prominent role. One for meauring how hot things inside might get. I can practically smell the experiments getting conducted.
Please - never pronounce Kirchhoff like that again.
www.howtopronounce.com/gustav-robert-kirchhoff/
Keer-kof or the Anglicized Kirk-off if you must, but never what was done here.
@@anthonyyates9003 Pretty sure astronomy depends on stars *_not_* being perfect black bodies. Ever heard of spectral analysis?
German scientist have contributed so much to modern science, that would have probably been the one thing we were most famous for in the world if it weren't for .... well, the other thing...
Well, as it goes, with the best, there also comes the worse.
They'll never live down the invention of sauerkraut. I understand, dude.
@Alexander Also involving ovens, so there's that.
Germans are the best at everything, even at being bad.
They were Poets and Thinkers before they were Judges and Hangmen.
I know equations can be "scary" but you should include them in your shows. Dont need to elaborate on them or anything. Just like pop them up so we can see what they look like.
+
Well, it would not make any sense really. He gave you a name for them so you can look them up if you want but there is no use for them to show up here - that's just extra work for no reason. And if you can't be bothered to look them up, then you are not really interested, so we go back to the start and the futility of the extra work required. It is actually a teaching technique - you tell people a very good story, make them interested, then the will go and learn something themselves, which is a more efficient and healthy way of learning.
That is one of the reasons why people arguing with Flatearthers are just wasting their time. A flatearther came up with his "knowledge" by "looking for it", he "investigated" and so on. So, psychologically, it is accepted more than if someone else comes along and tries to teach you something, like Earth being a globe. The first part is you "discovering", the second is you being told something.
All good teachers actually just aim to get you interested - and then the magic happens, you start learning yourself because you WANT to know, you WANT to learn... not because you have to and some bloke is forcing you to read a book or something.
That is why SciShow and many other like them give you a general story, an interesting story, and give you some key names and terms so that you could CONTINUE your search and learning, if they managed to get you interested. Them just giving you everything on the plate is classic school format that is proven to be bad actually.
@@Wustenfuchs109 I suppose, i already know most of the equations as a physics major, I just like seeing them in the video, it makes it more entertaining to me.
Though your argument doesnt really make sense if you think about it. You say if people are interested they will look it up themselves and learn it better that way. Isn't looking it up exactly the same as someone telling you what it is, assuming you're interested? Unless you do the work yourself of many centuries of physicists building from the ground up to what we know now then everything you learn will be because someone told it to you. What difference does it make if it's from a sci show episode or from a textbook?
@@foreverofthestars4718 It makes a lot of sense and that is why modern presenters do it. I am a physicist too but I also learned a bit about presenting to a crowd (or simply, teaching mechanisms), that is why I know what it is that these people, and many more channels like them (who get prizes for their educational work). Their job is to get you interested, to dip your toes into the water. Formulas and deeper understanding is for you to uncover.
Slapping a formula, without explaining it, is not only a waste of work (people who don't know it, it would not mean a damn thing to them, those who know, for them it is pointless) it can actually repel people who'd feed intimidated by them.
But if you don't understand the psychological difference it makes between you looking something up yourself and someone telling you, then what ever I say would fall on def ears.
If you want to understand, go and learn about teaching techniques. Just telling people information for them to memorize is actually the worst way of teaching. Telling them just enough for them to get interested and then letting them dig themselves is, so far, the most effective.
It is being used from primary school up to the elite colleges where your professor just gives you the basics then gives you a shitload of homework that you CANNOT do with a basic class but he makes story basic but very interesting so you are willing to spend time and get to the details so that you could work out a homework problem. Knowledge gained in that was is by far that of the greatest quality.
Doesn't make sense to you? Fine, not everything has to. The fact is, it works.
Agreed. It's not difficult to display some mathematical text. Even if not explained, it still looks cool.
2:13 Small correction: Assume a spherical _frictionless_ cow. In a vacuum.
With perfect density placement (balanced)
You do realize since there isn't any air... ukwidc
Assume ideal cow
@@patrickwilliams7496 spherical frictionless beef
"frictionless in a vacuum" is a redundancy, you can't have friction in a vacuum
Planck saved physics from ovens
And now a century later Planck's constant has saved the kilogram and other SI units.
Planck had saved physics yet again.
and if humanity plays it's cards right, we might save the universe if it starts to collapse
@@MrDoboz The universe does what the universe does, there is absolutely no way humanity can change that.
Planck saved physics from Oven, But he had no idea how many Physicist(or their braincells) he killed by doing so.
@@martinglendrange996 It's semi possible if there's a way you can have negative gravity. I wouldn't be surprised if it was possible, as the equations work fine either way, but math doesn't always match reality.
The formula. \
#////
As an old physicist, I was recently thinking about the black body problem, and I was about to go dig into its origins - I recall some of it but not all the details. This video fit the bill perfectly! Thanks for making it.
It saved physics from ovens, but it exposed them to the torture of quantum mechanics
no quantum mechanics, no world.
"I don't like it and I'm sorry I ever had anything to do with it"
-Schrödinger
Nah, we just need a modern day Planck to show up to fix another big piece. Get rid of the silly nonsense of superposition and such.
@@Vexas345 How is that silly nonsense? Elaborate please
You win some, you lose some.
You just don't know which outcome you get until you observe your results.
"Tossed in an extra -1" Damn, Planck won the lottery of guess and test apparently 😂😂😂👏
It wasn't a lottery, it was an educated guess. You can match an equation to a set of data without knowing the reason behind it.
Einstein threw a constant into his equations of relativity because otherwise gravity would lead to a nonstatic universe. He threw it out when Hubble's work showed the universe was expanding, and called it his greatest failure. When it was discovered that the expansion of the universe was accelerating, the equation still holds as long as the constant is positive instead of negative.
@@moosemaimer Fascinating. How can I learn more?
@@woodfur00 en.wikipedia.org/wiki/Cosmological_constant
@@moosemaimer Thank you!
Physicists: ‘We’ve get physics nailed down!’
Oven: “I’m about to end this man’s whole career.”
*Start
Physicists: We discovered all new types of particles by smashing subatomic matter together at near light speed, mapped out a gravitational highway in our solar system, and discovered a relationship between space and time.
Me: (Pulls out an oven)
Physicists: Confused, terrified screeching
Oh, I assure you that 90% of the scientific process involved in physics is confused, terrified screaming. And hysterical sobbing.
Good job
@@fevre_dream8542 basically Einstein sobbing in his death bed because he wanted to prove that the probabilistic theory of quantum mechanics was false after he got burned by Niels Bohr.
@@fevre_dream8542 And becoming insane
lol
Finally! Thank you, Hank. I've been wondering about the details of this for so long. I was especially stuck trying to understand the "black body radiation" term. Much appreciated.
Dr. Kevin King, Psy.D. Why didn’t you look it up yourself if you were wondering for so long?
Wow, I was so engulfed by the Wien - Rayleigh problem, that I totally forgot the video was about quantum mechanics. When Max Planck came into the picture and made the leap to discretized packets, I had a real M. Night Shyamalan moment. One of this best SciShow episodes I've ever seen!
Could you imagine that conversation... "I added a minus 1, idk why "
11:16 who the Hell doesn't think Einstein is German?
Edit: how did this get 28 responses
Laser Panda he did most of his work, and spend most of his life in the USA so some assume that he was born here
@@Mitch_Rogoff Not true. He was 54 when he moved to America.
Laser Panda I know right? I hope he was making a joke.
"Einstein" is one of the most German surnames I've ever heard. He's always depicted in cartoons as having a very heavy German accent. How does anyone not know this?
He was German at birth but have up his citizenship in order to avoid compulsory military service
Cat doesn't decide if it's alive or dead when you look at it. It decides if you're alive or dead when you look at it.
Nobody decides that's the point and the joke you apparently missed, or maybe I missed yours?!
*Dramatic piano*
@@lasarousi Beethoven's fourth?
I hope it's alive because I want to live a full life
Only in Germany, err wait, Russia?
@@0mchen221 A "Whole" life u mean :P
Einstein wasn’t only German born, that’s where he received his primary and secondary education.
Going to college in a country doesn't make you "more" from a place.
And while he was born in Germany, his citizenship was dual Swiss and American.
@@lordgarion514 This is old, but he did actually have German citizenship until 1896 (age 17). He only acquired American citizenship when he was 61. While you can be 'from' multiple places, living in a country until adulthood does normally mean that is the nationality you are perceived as, even if you don't hold citizenship.
@@Chris-rg6nm I don't think that's how citizenship works. Someone trying to kill you doesn't change your nationality, but I can see how someone would want to reject it as a result.
I don't think he's either of those two nationalities now, cuz I think he's dead. He held German citizenship one point and then Swiss citizenship at another. Later he acquired US citizenship. These things are time-sensitive, in case you didn't know.
The point is: German education and cultural development was excellent at the time. The amount of smart and wise brains that country produced was insane. Now it's a shithole though.
@@lordgarion514 So, if you are born in America and grew up there, then get citizenship in Canada as an adult and later when you are in your 60s get a citizenship in Germany. Would you say that you are American or Canadian-German ?
Even to this retired former physicist, hearing this story in many different formats and "tastes" never gets old. Good work, SciShow crowd!
I was disappointed, he didn't explain in southern, hillbilly terms that Donna Douglass could understand.
"everyone in this story is German" is hilarious for some reason.
"It worked, but he had no idea why." The cynic in me loves this .
I guess sometimes engineers have something common with scientists.
A broken miracle that somehow works optimally, you have no idea how it works and why did you do the way you did it.
I guess sometimes engineers have something common with scientists.
A broken miracle that somehow works optimally, you have no idea how it works and why did you do the way you did it.
Hank hosting SciShow is so unfair to the other hosts, he's so captivating and entertaining at the same time. Truly built different
I literally watched The Action Lab the other day talking about a black body, but he used a box with a hole painted in Black 2 paint. I prefer your video 😀
me too
TheOnePath Same! He used it to show a black body's perfect absorption, not it's radiation I think.
Still educational nonetheless
That actually was a black body, or at least how we build th
@Scriptminer A perfect absorber is also a perfect emmiter, he explains that in the video
"... assume a spherical cow in a vacuum and stuff like that..."
LMAO 😂😂😂
Well, it's true, for electricity and magnetism we had to assume spherical doves made of conductor sitting on a power cable.
I've seen t-shirts that say "Assume a Spherical Bear in Simple Harmonic Motion...".
"You might be a physicist if you'll approximate a horse to be a sphere to make the math work out easier" -My physics professor in high school.
I've heard it as "assume a spherical chicken of uniform density"...
You never heard that one before? It's been around...
I love SciShow, but this episode is specially well written, congratulations to all!
this story and the dirac equation always astounds me. they came up with mathematics, and in investigating the maths, they made discoveries.
Planck was actually inspired by the logarithmic equal-tempered music scale - see Peter Pesic's book for details. thanks
I superposed a 'like' and a 'dislike' on this video.
With all the germans in this episode, ich superposed ein 'mag' und 'mag nicht' on this Bewegtbildfernübertragung
Mine collapsed into a like...
@@James_Haskell It's probably because someone looked at it.
I gave it a .5 like
Fortunately they're not degenerate energy states, and after solving the schrödinger equation for this video, the like outweighs dislike by a factor of h-bar divided by the inter-molecular distance between two molecular hydrogens in the ground state.
Watching this was a mistake. I'm getting thousand-yard-stare type flashbacks to my Physical Chemistry class in college!
Most interesting class I've ever had by far, but.... *THE MATH!* Oh, the math!
I still have my book and like to reread the first chapters on the basics of quantum mechanics, but I really had a new respect for quantum physicists after that class!
Hahahaha im watching this video procrastinating studying for my physical chemistry exam tomorow morning 😂😂
Filip, good luck!
Seriously, though, good luck! You need all the luck you can get!
Literally Studying for a quantum mechanics test right now.....I can assure you, the only thing that makes sense is that nothing makes sense and just accept it. :-)
dev02ify Pilot Wave Theory has been shown to be wrong.
@zztop3000 anyone saying quantum mechanics makes sense or that they understand it... doesn't actually understand quantum mechanics. That's the thing about it. It doesn't make sense. But it works for what it's used for, so they keep using it until something better comes along.
@@Sanquinity Theoretical physicist Sean Carroll makes a good case for the many worlds interpretation of quantum mechanics by Everett which does make sense, actually (some implications sill have to be worked out though). But as far as I understand it, it's the most plain reading of quantum mechanics that states that there are no uncertainties but all possibilities described by the equations are actually real (the cat is dead and it's alive and there are two separate universes for each... universes branch out with every possibility which means there'd be a lot of new universes all the time) but only when you observe the outcome you find out in which universe you ended up which has a certain probability.
The Kopenhagen interpretation is just the standard for teaching students at the moment and has kind of dogma status. The formula works, so they don't care about interpretation. It states that the act of observation makes the probability "collapse" into a concrete outcome. Before you observe, the cat is in a superposition of being alive and dead, whatever that means. If you are working on other interpretations of quantum mechanics because you want it to make sense, you won't be taken seriously, apparently (editors of physics journals have even publicly stated that papers which attempt to interpret quantum mechanics don't have to be read but instantly go to the trash can).
Ah, the "shut up and calculate" approach
Paulo Marques Dude I don’t like or dislike the theory. Personally I couldn’t really care less, my area of interest is pure math, but I look into quantum mechanics on a surface level sometimes to fill my spare time, and I made my comment because I’ve seen articles fairly recently talking about some research that has shown pilot wave theory to be wrong in one specific aspect.
11:14 who thought Einstein wasnt German?? where else did ppl think he was from lol? ok he had Swiss citizenship but he was obviously German to any sensible person
I don't know. He moved to America during WWII, but he was already famous by then.
I went to the comments to ask the exact same question :)
He renounced his German citizenship when he was 17 and probably would have said he was Swiss.
@@mastod0n1 It was understandable as hist time was during the World War .
@@velutluna6026, can't you Google?
I love it when Science gets discovered in weird and interesting ways! Who's with me?
It actually makes me wonder, if this was a lucky guess, how many did we miss? How would the world look to us if we had a bit more luck?
Science is never discovered in "Normal ways"!
“So, physicists were stuck. ...which, happens every once in awhile!”
Haha... ah... *whimpering tears*
"Assume a spherical cow in a vacuum" .. Made me think of my ex
Did you blast her into space or just ram a dyson cylinder on her head?
@@helphelpimbeingrepressed9347 got rid of them either way
10:27 *That moment when you realize the name Quantum Physics is derived from the quantized energy of particles and suddenly the world makes too much sense.*
Well, just read up on some quantum theories, the world will lose all sense in short order!
Huh. I didn't notice that. Good catch.
_Brainsplosion gif_
Micah Philson !!!
dev02ify
Best off just reading The Elegant Universe by Brian Greene. That’s the closest you’re going to get to understanding quantum mechanics without an actual education on it
Well... As they say, 'if you think you understand quantum mechanics... You don't understand quantum mechanics'
I'd wish my teachers would have being some more like you guys back then in high school. keep the good work!
The Action Lab did a neat video about a hole in a box capturing light extremely well, like the oven they used in this video. Kind of neat to see a part of this video in practice (in another video).
I think this video would be better if you added a few more graphs.
And formulas! You can't have physics without formulas 0_0
true, the Wien & Rayleigh's interpretation lack graph, it's just a wall of text.
en.wikipedia.org/wiki/Planck%27s_law#/media/File:RWP-comparison.svg
@@alexc6105 Yep these would be useful here. I don't know why they didn't show them.
Or perhaps more giraffes
I love how excited you get about science
And now we have the same deal with General Relativity and the Standard Model.
That's the first thing that came to mind.
Hassan Tahan let's toss a -1 to the equations and let's see if it works. haha
And we're asssuming that there can be a Unifying Field Theory, and not that either or both theories are wrong. Instead, both theories are treated with a reverence normally assigned to saint's bones and the Ka'aba.
This video helped to explain things in a way that I understood. Thanks, Hank.
More on the history of quantum mechanics!!!
You know after all this time this presentor is still the funniest and most interesting to watch.
I love it when he says "basically ... broke physics/science" its a personal favorite.
Please dont let him find something else to do, pay the man well.
Keep it up Hank
What an amazing episode! Thank you so much to all the writers!
This is one of the best explanations of quantum mechanics that I have ever seen.
Well, this barely scratched the surface of quantum mechanics. All he really said is that things are quantized, and that "all the things about quantum theory arise from that." That's true - but it's not a description of any of those things. Not that I don't think the video is good - I don't think it set out to explain quantum theory.
@@KipIngram It's the best explanation of the origins of quantum physics for sure.
"Quantum mechanics saved physics from ovens." Can I get that on a T-shirt?
chuckle, the background gives angelic wings on the wide shot, and a low halo on the close shot. nice editing.
I'm from Germany and Einsteins achievements are such a proud history of Germany that it baffled me anyone could think differently. Wikipedia says he lived the first around 55 of his 76 live years in Germany.
Wow, that transition to commercial was smooooooooth. Classical mechanics smooth.
Without quantum tunnelling, I wouldn't be able to post this.
Especially when using a LED screen
Then, how many degrees of separation are there between quantum tunnelling and the Kardashians' You Tube channel? No, I don't really want to know it. Leave me innocent of this last murder.
This is a wonderful history lesson of the quanta! Thank you SciShow. Never disappointed!
How many theoretical physicist does it take to turn on an oven?
None, that is an Applied physicists job.
lol...
@@wildbill4476 - Experimental physicists! Also they need a woman "calculator" to do all the job, then steal the credit from her.
One of the best videos on the internet, even the 2nd time through
I asked different people, watches different shows, looked up half of the internet and noone could explain it good enough 😪 and then comes SciShow 🥰 it took only 12 minutes to explain my first semester of chemistry/physics 🥳 thank you guys 😊
Awesome. One of the best episodes of this channel I have ever seen.
Wish I had a professor like you in college. That was just perfect!
Loved the story/narrative way this was made! Great jobs writers and Hank for pulling it off!
As always, I greatly enjoy your videos Hank. FYI: Albert Einstein was born in Ulm Germany, the same place I was stationed in the US military. It's a nice place.
Thank you, this is a really cool video. Kept me watching it until the end which does not happen often with this kind of videos.
Those Germans might have been born and bread geniuses, but they still kneaded inspiration from somewhere. I guess anything is better than muffin.
You got me! At thirst, I was like "it's bred Sebastian", but at last I kept going, and got a good laugh! Nice one!
wow need some juice with all that oven cooking? I'll show myself out. sorru guys.
batter than muffin
Where's Master Thereon and what have you done with him?
Potato.
I hoped to see some more graphs showing how exactly the equations disagreed, and the equations themselves and the correction terms added by plank.
It's pronounced /plɑːŋk/ (as in the a in father) not "Plank" as in the wood.
he got kirchhoff wrong also, it's kirk-cough
Also Rayleigh (rah-lay) assuming it's the same as the bloke for whom Rayleigh scattering is named.
well, it's spelled plank; so people are going to say plank. That's what happens with a mixed up language/alphabet.
What? That's not true at all. It's pronounced with "a" like in "wooden plank". Edit: or like "a" in apple, in British English.
Damn it’s nice to see IPA in the wild
11:46 Nice transition.
This story is fascinating :-o ... brings me back to the days when I was bending over an equation for prime numbers. Strangely the only conclusion I could draw given the mathematical tools I had at my disposal was to conclude that prime numbers are an identity and by extension ''one'' and ''zero'' had to be included into this group , which in a way goes against the basic definition of primes ... or the underlying logic of mathematics we take for granted. Maybe someone else will read this , get some inspiration and be able to pick from there or simply figure a better explanation.
0 is indivisible to all because interpretation of said divison without context is hopeless.
1 should be a prime.
Aside from -1 there should be no prime in the negative.
Yeah rules are rules can't really do anything
0,1,-1 are avoided entirely.
Zero is the antiprime since with zero as the top number in a fraction (I think that's the numerator) you can put any other number on the bottom and it will equal the whole number zero.
Planck looks so badass in spite of being bald and wearing glasses. You know that he had to be right just by looking at that photo.
I’m disappointed that this video ended with Einstein & not Bohr, Einstein despised quantum physics.
I don't think he "despised" it - I think he just thought it needed more work. He thought we'd find more down there under the hood, and that in the end it would all be deterministic. And he passed on before Bell and the experiments based on Bell's work conclusively proved that not to be the case.
Thank you SciShow! You guys rock!
my highschool teacher taught us it is read as “Kir-Kof”
What an incredible transition to the ad copy
Of course Einstein was a german... A german who later fled from germany to the US, but still.
His annus mirabilis papers were also written when he was living in Bern, Switzerland, I believe.
@@HistoryNerd808 might be, he moved around quite a bit during his life.
I think Einstein actually fled Germany because of the ovens, if I remember correctly.
Einstein was special though, he learned a lot on his own time as a hobby, years ahead of his pears.
He was born German, gained Swiss citizenship in 1901, then American citizenship in 1940. But his main citizenship was Science, I guess.
Fantastic final segue there. Well done!!
Because Quantum Mechanics is a great person who loves to saves the lives of ovens.
Up
By far one of the most entertaining and informative episodes I've watched!!! Thanks!
11:20 "By extension, all the atoms and electrons and other stuff were born in Germany "
Great episode! I do love this kind of longer format videos.
What bothers me most is that this theory is more than 100yrs old and when I discuss the weird nature of it with my friends (engineers and science grads) they look at me like i am a crackpot. problem is the education system where they mug up the theory to pass in exam and not even profs seems to care about it. same goes for Theory of relativity. I explained twin paradox and they all dismissed it as a joke but when Nolan's Interstellar came out they came to me to understand what happened in the movie.
gthakur17: ... Pardon me, in which country do you live?
@@ogungou9 - Any country. Engineers think in terms Newtonian... unless they are electronic engineers maybe or specialized in space exploration. Engineer is a technical career.
@@LuisAldamiz : @Luis Aldamiz : in France, any engineers and science grads are taught at various levels some notions in quantum mechanics too depending on the course/cursus (since their first years after high school, generally in the courses/cursus named Math sup and Math spé, to begin with ...)
In fact in France the first notions of quantum physics begin in the last year of high school in Physics when you have chosen a field of science and/or technology at the end of the first year of high school (for the seconde and last year) ... as well as at the first years of university, if you continue in science and technology through university.
At least it was like that when I was in high school (I'm 49 now), and I don't think it's any different now.
So yes, I'm really baffled by what I'm learning from gthakur17, skeptical even.
In France most engineers would not react like what gthakur17 says, unless they are crackpots of some sort talking about electric universe and other poppycocks.
@@ogungou9 - I don't know which is the curriculum now in Spain but I have several engineer relatives, incl. my dad and a brother, and I'm pretty sure they know only very generic concepts about quantum mechanics, at least from studies (they surely learned more from private readings and watching TV/YT). You don't need to know the Schrödinger equation to build a bridge or an engine. It may be more useful in electronics but otherwise...
@@LuisAldamiz In France when you want to become a physicist, most of the time, you start above all by entering an engineering school for at least 5 years, but after t (some time it's through university) ... So
I guess we prefer that our students have a solid general culture, solid foundations in the scientific field as soon as possible ...
But now I understand why there is debates in France about how there is too much too soon to learn, for exemple in the two first years after high school (in math sup & math spé for exemple), compare to other countries (let's say
Sweden, randomly) that produce scientists and engineers at least as good as ours. We call this burden 'bourrage de crâne' ...
That title stopped me dead in my tracks for a full five seconds. It's not even a click bait title, it's a word salad title of madness and despair. Love it.
The comment section is full of german oven jokes. I guess old habits die hard.
No offense.
Ugh ikr it sucks :(
@@lazergurka-smerlin6561 Omg you had to
@@Nancy-uo9hk yes
Even Hank was making German oven jokes.
didn't notice until you pointed it out
I love watching these videos - the way you pressnt them is awesome!!!! Thanks for these really interesting and enjoyable videos :)
I'm too dumb for this video
I like to watch these videos and pretend to be smart
We’re all too dumb for scishow
Simple version: Reality gets screwy around the edges, and Max Plank spent his whole life detailing how screwy and in what ways.
Not dumb! You just haven’t gotten a full foundation yet. You may not know all the terms. That isn’t you being dumb. That’s you not knowing something. It’s okay!
Watch the crash course astronomy video for light. It will explain fairly well. Something explaining spectroscopy would work too probably. I will briefly try to summarize what you need to know to understand this video though:
Basically, light is composed of particles called photons. When photons hit an atom, they cause electrons to jump an orbit. Larger orbits are more energetic, after all, and light is energy. Anyway, those electrons that took in the light energy and jumped orbits are now "excited." Eventually the electrons will lose that energy again, or become "grounded" and they will emit it back as light. They will then go down an orbit level.
You can think of the electron orbit levels as a staircase. You can't go up or down half a stair. You can go up two stairs, or down one stair, but you can't go up partial steps.
Anyway, the more energy an atom has, the more excited the electrons get, so they jump up to more higher orbits (aka go up more stairs.) That means when they go back down to ground level they will emit more energetic light since they will be losing more energy.
More energetic light has a smaller frequency, hence it is "bluer." That is because the long wavelength end of the visible light spectrum is red and the short end is blue and purple.
Every atom has a different "staircase," so they can only emit certain wavelengths of light, and which wavelengths they emit depends on how many "stairs" they went down. You can actually use the wavelengths of light matter emits to identify what atoms it is made of as a result, since different atoms have different "staircases," so they emit light in different spots on the spectrum.
This video was basically just scientists accidentally discovering that atoms had "staircases" through math, as opposed to say atoms having a ramp of energy where the electrons could just go up and down an energy amount.
So yeah, they discovered atoms can only absorb or emit certain exact packets of energy. These packets are the quanta in quantum mechanics.
"How ovens broke physics" has "how tweezers broke Wii security" energy to it lmao
*_...quantum physics, always was, obviously, (in elementary school), the effect of quantum atomic electron orbitals-(it's what keeps atoms from collapsing; and also gives rise to a theory of subatomicals)-it's only when you get to college that quantum fields, gets fun..._*
You should have shown the equations (maybe even explained them shortly) cause they are really not that complicated and would’ve illustrated the issue further. Apart from that, really well narrated!
Get spooked
Great episode, Hank! Thanks!
I think its safe to say that germans invented science and physic altogether ^^
Archimedes and Newton would like to have a few words with you.
@@HermanVonPetri Oh great, im happy to see them!
Maybe if we say modern physic?
As well as Faraday, Maxwell, Kelvin, Carnot, Henry, Orsted.. I'd really recommend crash courses "history of science", if you really think that way.
@@miriam7872 Dude, there are really many scientist back then.
Ok, last try: Quantum Mechanics?
@@JonesP77 Yes, there are always many scientists involved in anything. And they always are from multiple countries. Quantum mechanics also needed DeBroglie, Dirac, von Neumann.. and Schrödinger was also not technically German, but from Wien.
Yes, there are many amazing German scientists. As a student of the KIT I of course know that. But no one country can claim a field of science. And I think thats part of the beauty of it all
I took classes about this, but now it makes sense!
I liked this longer and more comprehensive format of video. I would like to see more.
Ovens are where I keep all my cold items.
So how does boiling beer taste?
@Kiflaam in an apoclypse perhaps
This is one of the simplest, and clearest, explanations of the beginnings of quantum mechanics that I've ever seen. Nice work!
Why must the Universe be 'weird'? Humans are the only ones (that we know of) that thinks that Quantum Mechanics makes the Universe weird. The entire observable Universe seems to be just fine with Quantum Mechanics, so maybe it is our primitive and naïve notions of normal that actually are what are weird.
While i generally agree with you, weirdness is subjective
To (most) humans it *is* weird, because it's not like the everyday classical mechanics we all know and usually love
th-cam.com/video/zcwkOFSrLFI/w-d-xo.html
You see that's exactly what the use of the word "weird" suggests in the first place. It says a lot more about our understanding than it does about the state of the universe.
Interesting position. I feel obscurely it must have to do with the anthropic principle, but my horrible flu prevents me from thinking clearly.
I mean, of course it is weird TO US. We tend to interpret the world starting from what we perceive. To understand quantum physics, we need to jump to the abstract understanding of a reality that contradicts all our perceptions. And we arrived to do it way before being neurologically ready to grasp any of it smoothly (if we ever will develop that way before extinction, which I doubt). This is what makes it weird. Then, since the concept of weirdness is a construct internal to the human species (until someone finds a way to ask the dolphins or the tarantulas) and we are studying the universe for our own understanding of it, nor for the Pizzikatelzians' from Ceti Alpha 5, nor for the pandas', I guess we are authorised to call it weird for our own purposes.
Aren't we cute, though? Squeezing our limited minds to the last drop to get a glimpse of what we will never be able to experience without resorting to the religious shortcut? I love us. Except when we use the glimpse to make nuclear bombs. Maybe we are not that cute.
Edit: I don't own any of the planets named above, which are intellectual property of a Mr Roddenberry. Plus, no brain-tunnelling armadillos were harmed in the making of this comment.
Until you remember that humans observing the universe is actually the universe observing itself
I love this type of historical perspective videos of science. Thank you!
Germans and ovens? 😬 You're treading on thin ice, man. Careful!
j/k! (Geez! I know it's a horrible reference and a terrible joke, but come on, it was so obvious. ... Somebody had to say it. 😅🙄)
It's not like 90% of the comment section is making jokes about it...
I don't get it.
I don't get plz some help :"(
I get it. It's messed up, tho.
Seriously? Google "Germans Ovens"
Awesome episode! Thanks a lot!
Great video! I did my dissertation on quantum error correction, and I've never heard this story. Science is so weird sometimes.
This is one of my favorite stories in physics
This was one of the best mixes of science and humor...
That explanation of charges vibrating and giving off radiation makes so much sense to me now. So many things make sense now. I'm a 5th year phd in chem focusing on spectroscopy and the simple movement of electrons causing light never occurred to me. Wish I'd found this video when it came out, but thank you nonetheless.
A relative of mine is a professor of chemistry, and I asked him how much quantum physics they studied and employed regularly. His answer was "none." I wish more people would realize that chemistry is basically applied quantum physics.
@@jimmylin7233
You can have a long successful career as a chemist, without ever using quantum mechanics.....
In fact, almost no chemists even have access to the equipment needed to do chemistry at the quantum level.
Most likely your neighbor didn't have any of that equipment, so no, he wasn't doing applied quantum mechanics.
Chemistry itself will tell you what does what when mixed with that.
Quantum mechanics tells you *WHY* it happens.
@@lordgarion514 No, no, I agree, it's not necessary to know quantum to be good at chemistry.
My point about chemistry being applied quantum is more about how quantum physicists figured out atomic structure, electron orbitals, charge balance, valence electrons, VSEPR theory, and energy levels, and that served as the basis for a lot of theoretical chemistry work that came along, including basically all sorts of spectroscopic analytical technique, that then evolved into experimental and then practical chemistry. For example, I view the Lewis theory of acids and bases as applied quantum theory, rather than a "just chemistry."
But again, you're right - a background in quantum isn't necessary to be a good chemist. However, I contend that it can help.
@@jimmylin7233
Of course it can help, depending on what you're doing. More knowledge is always better.
But just because Lewis figured out how things worked, using quantum mechanics, doesn't mean you need to know how it works to use it.
Just like we don't know how our medications do what they do. We understand a few levels, but when you start looking deeper, we don't even know how our OTC meds work.
Thank you for this video. I had never heard this tale, and greatly appreciate the background. Please do more like this. BRAVO!!!
P
never in my life did i think the _oven_ of all things had ANY RELATION to quantum mechanics, but here i am, learning just that
Physicists knew putting their heads in the oven was bad, but they fell into this rabbit hole anyway. Thanks for all this great science!
My circuits teacher called Kirchhoff the king of obvious, he kind of created the sphere cow in circutis as well, he put into laws conservation of energy, all current that goes into a node, has to exit the node, kind of the perfect emitter
This was fascinating. Thanks!