Getting that MIT education without life crushing loans

Prof Adams is a great Lecturer! Very enthusiastic, very knowledgeable, with a sense of humor.

I've been to 3 universities in the past 15 minutes: MIT, Harvard, and Stanford. You could say I'm something of a genius.

Class begins at 10:30.

This guy fucking loves what he knows, and he wants you to love it too, which is incredibly refreshing.

32:56 "The miracle is not that electrons behave oddly. The miracle ist that when you take 10^27 electrons, they behave like cheese."

This is an absolutely great professor. I wish I had professors like him.

Took a quantum mechanics course from a desi guru who happens to be among the toppers and I gave up thinking I'm not good enough..this guy made me go over 6 lectures in a week and still hungry to go over again....inspiration is the key to make passionate innovators or scientists or teachers...I wish I had them...good luck to all of you lucky ones who gets to be inspired in early days..inspire your little ones too...

Heisenberg and Schrodinger are speeding down the highway when a state cop pulls them over. The cop walks up to the window and asks Heisenberg, "Do you know how fast you were going?" Heisenberg replies, "No, but I knew where I was." The cop says, "You were going over 90 miles per hour!" To which Heisenberg replies, "Fine. Now we're lost." Thinking this answer is a little strange, the cop decides to investigate the vehicle. He begins by opening the trunk. Shocked by what he finds, he shouts, "You have a dead cat in here!" Schrodinger answers, "Well I do now!"

When he turns to the crowd and asks „Questions?“ Me: Yes, why am I here at 2am?

I'm a 40 year old man, passionate about the understanding of how the universe works and when he said "except you're all wrong" i've got emotional for a moment because it was a kind of illumination giving me an instantaneous sense of awareness to the existence.

I was quite sucky at physics in high school, but I've always been really fascinated by QM, even though I never really got a full grasp of it. Now having found this video, I'm starting to get the basics and that honestly feels amazing! I've never seen such an enthusiastic and fun prof. as Prof. Adams & am really glad I have the opportunity to listen to him teach! :)

I'm almost as amazed at MIT's complex blackboard system than the quantum superposition of subatomic molecules.

MIT, thank you for having courses such as "Quantum Physics" uploaded to KZfaq for people to learn. As a person that has autism, it is much easier for me to learn in a relaxing environment where there are little to no distractions, and at the pace I want. Keep up the great work!

The most nourishing bit of information in this lecture is at the very end. Our intuition is formed from experience in the macroscopic world, which is totally different from the microscopic quantum world. This explains our frustration with counter intuitive results when trying to understand quantum experiments, since our intuition is not adapted to the quantum domain. Its like learning a new language. Thank you MIT for sharing.

I am so very grateful that i have stumbled across this channel. As a person who is only watching these videos for the curiosity that i have towards quantum physics, this has helped me understand the topic and it makes me feel that i am physically sat in the lecture room!. thank you

Damn these students are lucky to have such a passionate professor

he's so passionate about the topic. Really a great professor

00:00 🎓 El profesor Allan Adams da la bienvenida al curso de mecánica cuántica (804) de MIT para la primavera de 2013, destacando su entusiasmo por la materia y presentando al equipo docente. 02:51 🧠 El objetivo del curso es que los estudiantes no solo realicen cálculos en mecánica cuántica, sino que desarrollen intuición para entender los fenómenos cuánticos. 05:42 📚 Se recomiendan varios libros de texto para el curso, destacando la importancia de elegir según el enfoque (mecánica de ondas o mecánica matricial) y las preferencias del estudiante. 08:05 ⏰ La política de tardanzas es estricta, pero se permitirá la eliminación de la nota más baja en las tareas para contrarrestar eventos imprevistos. 13:56 📦 Descripción de cajas (color y dureza) para medir propiedades de electrones, destacando la repetibilidad de las mediciones y su independencia. 19:55 🔗 La correlación entre el color y la dureza de los electrones se demuestra mediante experimentos, mostrando que conocer una propiedad no predice la otra. 21:46 🤔 La expectativa natural sería que todos los electrones blancos salieran blancos del segundo cuadro, pero sorprendentemente, el 50% sale negro. 23:11 🧐 Aunque un electrón se mide como blanco inicialmente, al medirlo nuevamente, puede salir blanco o negro, indicando una naturaleza no determinista y aleatoria. 25:05 🎲 Existe una intrínseca imprevisibilidad y no determinismo en los procesos físicos observados en el laboratorio, revelando que la probabilidad es forzada por las observaciones. 27:54 📦 Es imposible construir una caja que indique tanto el color como la dureza de un electrón simultáneamente debido al principio de incertidumbre. 30:21 🔄 La propiedad fundamental del mundo cuántico es que ciertas propiedades observables son inherentemente incompatibles entre sí, como la dureza y el color simultáneos. 33:41 🔄 Presentación de un dispositivo experimental más complejo con cajas de dureza y espejos, y la introducción de un principio de invariancia: cambiar la dirección no altera las propiedades medidas. 37:28 🤔 Predicción de resultados en un experimento donde electrones blancos se envían a través de un dispositivo con espejos y cajas de dureza, resultando en una probabilidad del 50% para la dureza al final. 43:11 📊 La clase aborda una serie de experimentos relacionados con la superposición cuántica. 45:31 🎓 Experimento: Electrones duros se envían a una caja de dureza y luego a una caja de color, prediciendo una salida 50-50. 46:56 🔍 Experimento complicado: Electrones blancos se envían a una caja de dureza, con una salida sorprendente del 100% blanco y 0% negro. 57:10 🧐 Se introduce una barrera móvil en el camino suave del experimento anterior, reduciendo la salida en un 50%, pero sorprendentemente, no todos los electrones salen blancos, sino 50-50. 01:04:18 🤔 En experimentos cuánticos más complejos, como con cajas de colores en lugar de espejos, los resultados pueden variar, y es crucial abordarlos caso por caso. 01:05:44 🌈 Una "caja de color" en la mecánica cuántica no se verifica directamente, pero su propiedad de ser "blanca" se deduce al observar el electrón que sale de ella. 01:06:14 🇫🇷 Experimentos similares han sido realizados por Alain Aspect, un físico francés, demostrando que la presencia del experimentador no afecta los resultados. 01:06:43 🤯 Al analizar un electrón en una superposición de caminos, surge la pregunta de qué ruta tomó, y ninguna opción (duro, suave, ambos, ninguno) parece adecuada. 01:10:36 🤔 La superposición cuántica plantea un dilema: los electrones no siguen las categorías clásicas de camino duro o suave, ambos o ninguno, desafiando la intuición clásica. 01:11:34 🔄 La superposición cuántica sugiere que los electrones adoptan un modo de ser único y no convencional, llevando a la necesidad de un nuevo lenguaje, la mecánica cuántica. 01:13:28 🔄 La superposición implica que un electrón no es ni duro ni suave, sino una combinación superpuesta de ambas, desafiando la idea de una propiedad definida antes de medir.

Prof Adams makes a difficult and ambiguous subject easy to understand. I watched several videos on this subject to no avail but this clearly is the way it should be explained. Thanks.

I can't stress enough how much I love the fact that MIT is providing those courses online for free for anyone to watch. Who knew, that a 17 year old German law student like me could get his hands on quantum mechanics lectures of MIT ^^

the content starts at 10:33.

Dude im basically a house pet when it comes to academics but Dr.Adams' enthusiasm made me watch 3 hours so far. Thanks to MIT for making this available to us lower common denominators!

I just learned Dr. Adams was born in my same city (Bogotá, Colombia). What a pleasant surprise, professor :)

His passion for his job is adorable.

As an educator, what I enjoyed most in this presentation was the "buzz" of learning. From the passion and enthusiasm of the lecturer to the engagement of the students, this shows a really awesome lecture. Well done. Very well done.

MIT has the most chill and exciting professors. I’m so happy this is on the internet 😁

This is the type of professors we need to heal our academic traumas

It really strikes me that I've never really had a teacher that's this pumped up just before a lecture. What a great guy!

What a great line - "the miracle is not that electrons behave oddly, the miracle is that when you take 10^27 electrons, they behave like cheese!" Awesome!

so sad you don't do this anymore, you're so good at it. 10:50 the experiments are so unsettling you have to tell the class that you're not lying to them. I love it.

Thank you MIT!! ❤ Love from Hawaii. Lifelong learners around the world appreciate OCW!

conlusion : definition of superposition is "I don't know what's going on"

This is how a teacher should be. The content, even if rigorous, was still so engaging. I wish my professors were this passionate about physics.

wow.... we need more professors like him. Most physics and math professors laugh at questions. Like "what are you talking about. That's just a bad question. STFU and let me move on" instead of "what do you mean by that so I can correct your misunderstanding that like 8 other people in the class probably also have" which is clearly how this guy teaches. In other words, he actually teaches.

At this point in my life I can't even sit through a movie and watch them in parts. I just sat through a 1 hr + university lecture on Quantum Physics, of all things and I am a Computer Science student.

I wish stuff like this was aired on public tv.

Gotta admit. I’m in bed watching stuff to try to dose off (sleepy but can’t sleep), and I figured this should do the trick. I ended up watching the whole lecture and now feel wide awake. More professors need his enthusiasm. I’ve never seen a classroom applaud following the conclusion of a lecture, but this man earned it.

A few professors in India has the same level of enthusiasm and potential to deliver the knowledge to their students. The rest are busy in destroying the potential of millions of students. Education is a money game in India. Respect for MIT and such professors in India who are giving their best efforts.

I don't know what the hell Prof. Adams is trying to teach me, but I'm here for it.

I went to a very well-known university and in 4 years I only had one professor who was as engaging and passionate about his subject as this guy. Kudos to MIT!

My goodness. If I had a teacher like this guy in high school maybe I wouldve been so inspired to work hard and go to a great university. He did a phenomenal job, hard to believe this is all live almost.

It's incredible to think that everyone in that room has now graduated and is incredibly accomplished in their own right. That's beautiful. I wonder where they all are...

Determinism is reliable on the condition that the quality we rely on is known. This is why it is still a reliable approach to the world as we know it-*as we know it.* It does however invalidate absolute inviolability of determinism under specific conditions.

9:40 is where the actual lecture starts, for those who want to skip through the part where he's going over logistics for the students in the actual class.

Had me locked in the entire way. I'm taking away much more than just knowledge, but also how to share ideas in a way people will listen, and enjoy. Give that man a raise!

Unconsciousness goes downwards, consciousness goes upwards. And one thing more: upwards is synonymous with inwards, and downwards is synonymous with outwards. Consciousness goes inwards, unconsciousness goes outwards. Unconsciousness makes you interested in others things, people, but it is always the others. Unconsciousness keeps you completely in darkness; your eyes go on being focused on others. It creates a kind of exteriority, it makes you extroverts. Consciousness creates interiority, it makes you introverts; it takes you inward, deeper and deeper. A child is not conscious. A child lives in a deep unconsciousness. By becoming conscious you are becoming adult, mature, so all that was clinging in your unconsciousness will disappear. Just as you bring light in a room and the darkness disappears; bring consciousness deep in your heart. Witness that you are not the seven subtle bodies behind the body, layer upon layer. Witness that you are only a witness, and nothing else a pure consciousness. Religion is basically the science of creating consciousness in you. Become more meditative, become more conscious. Out of that consciousness a very flexible, spontaneous character is born, which changes every day with the situation, which is not attached to the past, which is not like something ready-made. On the contrary, it is a responsibility - a moment-to-moment capacity to respond to reality. It is mirrorlike; it reflects whatsoever is the case, and out of that reflection, action is born. That action is religious action. Conscience means all the knowledge that you have. And consciousness means being empty, being utterly empty, and moving into life with that emptiness, seeing through that emptiness and acting out of that emptiness then action has tremendous grace. And then whatsoever you do is right. It is not a question of what is right and what is wrong, because something that is right today may be wrong tomorrow. And borrowed knowledge never helps. Reaction is unconscious. You do not know exactly that you are being manipulated. You are not aware that you are behaving like a slave, not like a master. Action out of consciousness is response. Heaven means consciousness, hell means unconsciousness. You carry your hell in your unconsciousness and you carry your heaven in consciousness. These are not geographical places, these are states of your being. Asleep, you are in hell and suffering from nightmares. Awake, you are in heaven and all suffering has ceased. Man is unconscious; he understands the language of unconsciousness And whenever somebody talks from the peaks of consciousness it becomes utterly ununderstandable, unintelligible. He is so far away! By the time his words reach the dark valleys of our unconscious we have distorted them to such an extent that they have no reference at all to the origin any more. Problems exist through your ignorance, through your unconsciousness. Consciousness is the solution. Remember, I call it the SOLUTION. It has nothing to do with any particular problem. Every and all problems disappear through it - it is THE SOLUTION.

I’ve always been fascinated by physics. This is my FIRST video ever in my intent to learn about quantum physics. And I LOVED this

it's crazy how excited I'm watching a frickin' MIT lecture

Boy oh boy if I had a professor of this class back in my university times here in Finland. Now at the age of 36 I thought that I'm getting stupid and old engineer when I tried to wrap my head around quantum physics, but it seems that reading literature isn't just enough if you don't have great professors like Adams to guide you through the basic concept of something complete new. Thank you for these videos MIT!

I love how much passion and energy he has

I don't know about you, but this lecture was like a movie to me. A movie that takes you along a drama and teaches you a lesson you didn't know before. The end was such a confusing and embarrassing poetry, but beautiful at the same time. That's reality.

Allan Adams is a fantastic lecturer - he has a real gift for teaching. This is BY FAR the clearest presentation of quantum mechanics you will find on the internet. Wonderfully coherent - thanks MIT. (I took a QM course at the University of Illinois ~35 years ago. Unfortunately I did not appreciate the beauty and richness of this subject. Had I - I may have switched majors from Nuclear Engineering to Physics!)

Skip to 10:29 to start the actual physics of the lecture

I want to find something in my life that I am as passionate about as this teacher is about Quantum Physics

I knew instantly what experiment he was describing in the first part of the lecture and then he said silver atoms and confirmed it for me. The stern-gerlach experiment is one of the cooler ones I’ve ever studied.

The lecture starts at 9:42

The applause at the end truly shows how amazing of a professor Adams is. Thank you MIT OCW for allowing the rest of the world to experience a professor whose lectures cause students to applaud.

I graduated from college in 1994. Watching this lecture on a completely unfamiliar topic to me, brought back "that feeling" of being a college student, which is hard to describe. Excitement? Mystery? It just invigorates me like a good mystery. I had to watch this at 25% slower speed, I and I re-watched it all, especially the segment where that damn barrier enters the stage. I got completely lost there and still am. But I know there's something amazing at play that is yet to reveal itself that will blow me away. I also wonder, looking at this class, have the demographics of students changed with more women taking this course? Just a curiosity on the heels of some great, deep conversations with my BFF since 83. We talk about how we came to be teachers and the pivotal moments that led us there. We discussed this bc we both regret we did not take a science path. We both love science, love research, love data and discoveries and explanations. But somehow we were unconsciously doing what society suggested we should. In subtle and not so subtle ways. (We have decided that if we ever win the lottery, we will both, at 55, return to college and obtain a degree in science. )

Wow this professor is brilliant. I feel privileged to have virtually "sat in" on this course for free.

Prof Adams passion is what kept the students and audience glued

MIT, thank you so much for releasing these material on the internet. I'm a brazillian chemistry student and we have a big lack of good material to study around here. We need to spend a giant amount of money for a good book, and theese video classes really help me to improve my knowledge and i'm certain that it helps a bounch of others students that can't get a good material to study so easily.

Awesome introduction to a course, especially a course in Quantum Mechanics. I'm sure this lecture will enlighten and motivate those students as they struggle to understand the complex mathematics and details of the course. They'll remember what it's all about.

Thank you MIT, I'm 14 and I'm really fascinated about this, although I may not understand some of it, thank you for making these lectures public for all to learn.

26:50 When he said "This should hurt. This should feel wrong. But it's a property of the real world and our job is gonna be to deal with it." I really felt that.

The Uncertainty Principle of Physics: There are some observable, measurable properties of a system which are incompatible with each other….It doesn’t mean anything to say ‘it is hard and white simultaneously. That is uncertainty.”

I dropped out of high school, never graduated college, and was able to follow this lecture and understand the explanation. Such an interesting lecturer with a tremendous ability to translate complicated theory into lamens terms. I'm an idiot but I really appreciated his approach to explain something in terms that I could understand. I wish I was as smart as all the people he teaches.

When I was an engineering student not once did we applaud a lecturer like that, but we never got such a clear and engaging presentation either.

he's so passionate just great! I wish every teacher would be like this

This presentation style contrasted to my state university experience where almost every chemistry course started with an adversarial rant about us all being a waste of the professor time is incredible to me. I would have paid 4x more to be taught by people who believed i loved learning, but was ignorant. Love of a subject is infectious to even mildly interested listeners.

This is a Boss Professor, his enthusiasm just makes you want to listen and learn.

Allan Adams is a great professor. As a business student w no interest in physics, i am chocked to find myself passionately watching this video. The way in which he engages students is indeed a talent.

Just finished watching this lecture and it has confirmed once again that I made the correct choice going into medicine. Professor Adams is excellent.

The enthusiasm of students with the questions is an indicative of the quality and theoretical bases of the conjunct of students present in the class.

My 10 yr old son and I just watched this entire thing.

I watched this lecture and was like “hey I might understand this” then I watched the second lecture and realized I’m not a physics major.

I’m stuck on this wave of high quality math lectures from high quality learning institutions. I just wish I wasn’t finding them at 11:30pm.

Tank you for uploading this classes for all of us students around the world. Professor Adam is full of energy and pasion, is so inspiring.

This is awesome. Very good presentation. It's like someone showing you how a circle can be created by straight lines.

Thank you for making this available! It's a fascinating topic, and while I'm an engineer I definitely approach QM from a philosophical perspective. I love the energy that Professor Adams conveys during the lecture.

I'm a physics graduate student watching for kicks. He really does an impeccable job of introducing each concept and showing how it is forced by experiment. The lecture actually made me rethink the arguments I was taught in undergrad and sharpen them whereas before I didn't think about them as much. For example, when he introduces the boxes, he does not say that they individually show QM is fundamentally random. A lesser teacher would say, "hey look, each time I send a soft electron through a color box it comes out 50/50 black or white, so that shows QM is fundamentally random", but that'd be a bad argument. A student could just say that half of soft electrons in the world are black and half are white, and you just don't know which ahead of time. It would be impossible for the teacher to adequately answer this student's complaint, because there's no operational way to tell which is right by measuring color. Fundamental randomness in color and randomness due to ignorance both result in a 50/50 split. By introducing the sequence of three boxes at 20:00 he circumvents this argument by instead examining which electrons flip color and which ones don't. If this were not truly random, then we could tell which electrons flip by some additional property, and Bells' inequality shows that no such property exists. Furthermore, this shows that electrons cannot have both definite color and definite hardness, but I just wanted to focus on the randomness aspect because it's often taught poorly in my experience. People don't often present scenarios that force randomness, they merely assert that things are random.

Thanks to MIT for uploading these lectures. I understood at the beginning that basically it means that electrons have 2 binary properties

the hardness and the color box is by far the best way to explain Heisenbergs Uncertainty principle

I do wish my Quantum Mechanics lectures had been like this. Its a blast learning all over again but with the added enthusiasm.

Man I wish I had teachers this passionate about physics and teaching like Prof. Adams.

TWO bottom lines: 1) DO NOT LABEL AN ELECTRON HARD and WHITE , for example. DO NOT ever put both hardness and color labels at the same time on one (or more) electron. 2) If you join the two outputs of a hardness or color box, it is as good as not passing electrons through that box (and subsequently joining the outputs). Interference? Degenerate? Degradation? Deference? What is the exact terminology? Someone? Point (1) explains experiment I, II and IV. Point (2) explains experiment III. Then your head will stop spinning and get every answer / prediction correct. An example for point (1): Once some WHITE electrons (that come out of the WHITE port of a color box) are subsequently passed through a hardness box (no matter what mirrors / splitters / walls are in place; disregard how far are the mirrors/joiners apart), they are suddenly 50-50 black and white. THEY HAVE TO. BECAUSE point (1). STOP / REFUSE the idea or possibility or situation that allow you to call some electrons HARD and WHITE, for example.

I watch these videos sometimes just to see what the professor is like. I'm trying to get my undergrad degree in a less than stellar school where one of the most difficult things is simply dealing with the professors. These videos help me keep working hard to get into grad school elsewhere without feeling like I'm going to be trapped with awful professors for the rest of my life

Prof. Allan, stumbled on his video lectures. Looking to test my capacity. His lectures are smooth, easy to understand. Then found open courseware. Prof. Allen's teaching is a diverse style which is needed much. Thank you for dedication to reach many that want to learn.

This is how teachers should teach. Make education fun. I’m no physics major but this professor makes it interesting to want to learn it.

One thing that really helps to understand this: Imagine that these electrons can only contain one bit of information. Once a new bit (black, white, hard, soft) has been assigned, on observation, the other information is lost.

OMG! I have never seen such a passionate and amazing teacher. I had a constant smile throughout and some good laughs during the lecture. Professor Allan Adams, you rock. Every student deserves a teacher like you. That's how to create curiosity and thrill for the subject among students.

What a professor... i wish i had a professor like this that enjoys his job... great video.. need more

Holy Shit!! Season 4 is finally out!!! I've honestly been waiting for 5 years for this lecture series. Bah I think I need to go back and watch all the previous Seasons to familiarise myself with the plot again. Thanks MIT!

Hi sir .this is me Naveed khan from pakistan and really i learn much things from your lecture .and I have only one sentence for you which is { I LOVE YOUR WAY OF TEACHING 😍🥰}

This is my favorite first lecture to any class.

This is really awesome what MIT is doing, especially for those who already completed school or who are currently working full time jobs with an interest in studying QM. Thank you so much! :D

That was beautiful. It pains me to hear people say that they "hate math" or "hate physics" or hate any subject. Hopefully, we can all eventually develop into knowledgeable and passionate educators such as Professor Adams, even if not in professional teaching capacities.

This literally blew my mind. Adams is a great teacher.

It takes a great teacher like this for to learn that this topic is not for me. Thank you!

The man who made me fall in love with QM ! This isn’t just a class , this is an experience ! The best part : His illustrations and visualisations ! Thank you Prof.Adams