yeah that's probably close enough for physics.

Big if true

True

Less than 2

well, fairly small. it depends on if you're looking.

this guy sounds like a riot, i kind of miss university

😂

What a king

He was a legend among the undergrads as well when I was there. He taught freshman physics to the advanced students for a number of years and was much loved by his pupils.

I mean, his greatest discovery, according to Shankar, is "a small parameter that justifies most calculations performed in physics: 1/ego, where ego is the author’s ego." I want to email him a love note.

Go get him "quantum physics for babies"!

Same here

If you are secretly in love with Angela, join the queue ❤❤❤

I particularly enjoyed "a Bohr walks into a bar". Got a good chuckle out of me!

I thought she is an engineer now, I am confused

​@@Skukkix23She's a theoretical physicist researching dark matter, I think.

you havent seen the video, huh?@@jss1328

engineers are practical physicists@@Skukkix23

We are the faithful.

Only the best numbers for our queen!

All numbers are good. Some might be negative or square or even irrational but they are all good. 🙂

​@@imaginaryuniverse632specifically in atomic physics, not all numbers are good. Only time-constant eigenvalues are good quantum numbers.

​@@emilyrlnwhy simping? value yourself.

I assisted Dr Kielkopf in spectroscopy at U of Louisville in 1987, and we made good use of exactly that kind of kit augmented with a pretty fancy laser. I saw Helium ionized enough to form He2, and then watched as Dr. K. tuned the laser until the molecular bond of the He2 itself became an excimer laser (the gaussian hump on the PC turned into a razor sharp peak). I was just a Freshman but being the only undergrad physics major in the entire University but one, I was snapped up as the department's favorite pet. Working in a real life physics lab is one of the most memorable experiences I ever had, even though I didn't go all the way. Channels like these help me catch up, now that I'm in my 50s, and ready to go back and learn PDEs and tensors, etc., just for the pure intellectual enjoyment of it.

I remember sitting down for a midterm when my lab partner asks me "What's the square root of four?" I immediately pulled out my slide rule and told him, "Looks like about 1.98."

When i an astronomy undergrad 23 years ago, we also made the measurement by hand not because there weren't new digitally assisted ways to do it, but in order to teach us that it could be done by hand and the problem solving it took to figure it out. It was kind of fun since it was a one time lab and mostly we were doing the measuring.

@@joseapar Same in my astronomy undergrad we looked at the hydrogen alpha absorption line with a prism (or a slit, IDK it was 15 years ago). Just needed a good sunny day

Wait... "steam stream" is one of the possible translations and you didn't go with that?! The size of a hydrogen atom is about half a steam stream. That's awesome! Is that true, or are you just blowing hot air?

I'm not fully awake so I was like "huh, what a weird coincidence that their name contains "name"" before I realized you were making an example 😅

W O R M S T R O M !!!!

@@Sam_on_KZfaq it was very tempting, I have to admit. But "rapid", as in a smaller river, is more correct. 🥲

Language is neat!

Almost word for word what I was going to write 😂

“Misty river” or “foggy river” (:

I thought it was from the word for 'meadow'.

Hey! There was another video on that!

By someone...

wow, i'm sure this is a career defining moment for her!

I can't tell if this comment is a joke, based on the other video... but it ends well, so I appreciate it either way. :)

He can tell you exactly how much it will cost to fix or exactly when it will be ready, but not both at the same time.

Replace mechanic with doctor and this conversation definitively happened. Quantum mechanic is a quack magnet, and not in the electromagnetic way

As a Chem Student trying to get into quantum/theoretical chemistry, but feeling ever increasingly lost due to all the maths & physics knowledge that we lack and yet are presumed and expected to have by our teachers: Thank you for this, it's very reassuring!

i haven’t taken nearly as much stuff as you, but i still get lost when my professors start talking about special functions and spherical harmonics and stuff. this is probably because our mathematical methods for physicists course is given after our first quantum course (for some weird reason). being a math double major sure helps tho

I more learned how to pass my physical chem exam than to understand it intimately. I've forgotten most of it by now but I do know I had a more conceptual understanding of it back then than a mathematical one

I had the exact opposite problem! I knew how the math worked, what the answer needed to look like at the end, and a probably autistic professor who could never figure out how to verbalize a connection between the math and a conceptual framework ​@@johnsober

When I was struggling in Quantum Mechanics, my Hotel Management suitemate complained about having to write a menu. I told him I was trying to work out how many times I'd have to bang my head against the wall before I could expect it to quantum tunnel through to the other side (we were literally assigned that question for homework). The answer is... a lot more than the number of seconds in the age of the universe. It is so unlikely that events like that should be expected never to be observed no matter how much you look. But it isn't impossible...

@@Sam_on_KZfaq So what you're saying, is there's a chance...

This is so wholesome

You can just sense the tension. I bet there's gonna be some backstabbing in season 2.

My favorite thing is when numbers completely beyond comprehension cancel out and leave something bizarrely comprehensible. My favorite example is the Hubble-barn. The Hubble length is the radius of the visible universe, and the barn is a unit of area used in nuclear physics that's equal to about the cross-sectional area of a uranium nucleus. If you multiply these two absurd numbers together you get the Hubble-barn, a unit of volume which is equivalent to the volume of a cylinder with a cross section the size of a uranium nucleus and a height the size of the visible universe, and you get.. about 13 liters or 3.5 gallons, a volume which sounds like you're describing the amount of gas left in your car.

​@@oliviapgwow never heard of that, kind of hilarious 😂, just imagining a near infintely tall miniscule pole whose volume is 13 liters lol

Thats a great fun fact, thanks for sharing@@oliviapg

Lol if I was an engineering student I’d need to take PEDs not PDEs

As near as I can tell, any time you’re solving PDEs, it’s “let’s use separation of variables.”

​@@TIO540S1it's either that or *shudder* Green's functions

As a math major I swear, Engineers be getting all the nicest looking functions to deal with. 😔

@@primenumberbuster404 Bro Lmfao ikr! All we get is an insane function that's continuous "almost everywhere" and then they ask you to integrate it! then I have to learn measure theory

High school eachers are punished by forcing them to teach math and physics resulting in the physics teachers being angry thus giving physics a bad reputation.

@@davedsilvamy high school physics teacher pointed out you can sort of tell who has primarily a math background and who doesn’t when they’re doing physics by how they do problems- if they leave variables in that could be substituted earlier on till the very end then substitute all at once they’re probably math people, and if they substitute as they go they’re probably not. I wouldn’t be surprised if when people are getting taught it can also be really hard to follow the work and keep up if the teacher just runs with the long ass equations full of variables then substitutes in when the student isn’t a math minded person. Some people prefer it that way, but for some people it gets hard to keep the equations straight and if that’s the way your taught and that’s the way you try to do it and you’re not a big math person I could see that really turning a lot of people off. Overall I’d assume it also has the same problem with Econ/finance where there just isn’t really any qualified people who actually got their education in the subject who want to teach (because there either just aren’t that many people period and they can get far better paying jobs elsewhere) so all the people teaching it are half self taught and so they’re just not as great as teachers in other subjects who formally studies the subject through undergrad and possibly grad school before going into teaching it.

When I reached that point I immediately scrolled down the comments specifically to find this comment 😂

The "squishing your head" interval

Where are you finding students that have heard of electrons but not angular momentum. Not trying to diss anyone, it's just wild to me because I've had the ice-skater/angular momentum thing in my head for as long as I can remember. :D

Nice. Yeah, the electron orbit stuff always made me think too much... wait why doesn't it just fall in? (empty looks and whispers) he knows...

@@andrewfleenor7459 curriculum. Not much to be done about that..... The students usually know about the ice skater piroutte effect, but there's not math, derivation or formula going with it.

I heard this too and the idea was even in my 13th grade textbook, but it cannot really be historically accurate, can it? DeBroglie formulated his idea of matter wave quite some time after Bohr.

@@AndDiracisHisProphet Afaik this idea came up much later, even much later than deBroglie thesis in 1924; and I do tell my students that this is not what actually happened. I like the approach, and you could have discovered and constructed it this way.

Matt Parker, is that you?

AND??? Where's the rest of the story?!? 😂

Did you pass and graduate with a philosophy degree? What did you do after that? What do you do now? I'm incredibly invested in this short KZfaq comment!!!

Please post more information on this. I'm interested in knowing more.

have you read sean carroll’s paper on quantum mereology? it’s been on my list to get around to but i imagine it would be a good read if you’re interested in these things!

@@hattielankford4775 With my degree in philosophy... I went to law school. I do Constitutional Law now, still spending a lot of time on first principles and theories. I work with groups trying to amend the Constitution. But the stuff I study now is a little more consequential than what I studied in college. I still find metaphysics fascinating, but it isn't as important in the real world.

me when i answer true false questions on the quantum final. to be and/or not to be? that is the uncertainty principle

Yes, but only between a finite number of possibilities. And yes, I'm fun at parties

​@@alonskii You underestimate my ability to find wrong answers.

😂😂

i collapsed with laughter. you comply with humdinger's equations.

Your teachers sound very weird. Their job is to help people learn. If they assume some people have the capacity to learn and some don't, then they may as well not even be there. You could just hand out textbooks instead and wait for some students to learn and some to not.

​@@volblaI completed a mathematics undergraduate degree in the USA. I assure you, this is not an unusual attitude. The graduate mathematics students are selected for their potential to be mathematicians.They teach math to be paid a stipend by the school and to have their tuition fees waived. Their priority is their own math classes, not teaching. Below the university level, teaching is poorly paid compared to technical jobs. This means talented people often choose more lucrative professions over teaching. The better students will receive better teachers. I was fortunate that I was placed in advanced classes in my lower grades with the better teachers. Even with this advantage, I had many bad teachers. These issues reinforce the idea that math requires a natural talent. Also, since math builds so quickly upon itself and much of the early subjects are a linear path, a student falling behind often cannot catch up. There are also issues with classroom discipline, uninvolved parents, violence in the schools which cause talented people to leave the profession. Every year I went to a public high school, I would miss school because of a teacher's strike during contract negotiations. The teacher's union made it difficult to fire incompetent teachers. This was in the 1970's. I don't think anything has improved.

Fun tangential fact: "ånger" also translates to "regret".

Ström is _not_ the origin for the English word "stream", rather they are cognates with a shared origin. They are both derived from Proto-Germanic *strauma-, ultimately from the Proto Indo European root *sreu- "to flow."

​@@verditelabs6550couldn't have said it better myself!

These days, pchem and QM are pretty well the same. I have a physics degree, and I'm now reading up on physical/quantum chemistry. The boundaries between materials science, solid state physics, and physical chemistry are pretty nebulous. It's really interesting to see how many people jump between departments.

Jokes aside that's the one with Morgan Freeman and Keanu Reeves right?

@@12pentaborane Yeah, don't think any sort of explanation is given as to why a cutting edge university physic project is using external blue collar machinists to engineer their experimental prototypes.

A good lab tech is almost as good as a glass blower.

btw, It is a fun exercise to do the whole calculation step-by-step; however, it quickly ceases to be enjoyable when you start working with the polynomials and normalization 😩

I'm an Air Force pilot with an EE degree and I use physics to anticipate what control inputs are needed for landing. But so do all the pilots who don't know physics; they can land the plane perfectly as well, they just aren't aware of math describing why it works.

I found those comments truly disturbing. Engineering at its peak is something like the light bulb, the WD40, the DRAM, the cheap quartz watches. Basically bringing out top notch lab equipment from the ivory tower of science into the desolate life of everyday men. That list would not even close to Angela's list. I know great engineers, but they are not like "electrical resistance is always positive and why is it, could it be zero, could it be negative? Let's just spend the next 20 years to figure it out". If you are like that they despise you. How can they think the world is revolving around them? Anyway, hearing "engineering is important" sounded a lot like when your dog huffs at you because you were unjust and then you two are sitting down together and you say to him he is a very important part of the family and you respect his feelings.

@@richardv.2475respectfully every engineering project is a physics experiment in the laboratory of the universe. Will this structure support its own weight? Yep....pbysical laws continue to hold, what is important? I only say engineering is the application of physics. I am an engineer who considers himself a physicist albeit not licensed and any physicist could be a great engineer. And any engineer worth his degree would love to push the boundaries of what we understand about the physics. Its engineering that got us to a transistor consisting a single atom of each material in the transistor, that didnt happen without some understanding of quantum level effects. Its physics. When you can use it as a tool we call it engineering when its just academic its called Physics. But its all physics. All the time. But what is important? That is a philisophical question that you get to make up your own answer to. I'm just talking about physics.

@@TheGarmisch no doubt. I am sure thst properly trained any person could also perform physics experiments and collect data while having no grasp of the material. I am only discussing the underlying nature of the work. How it is performed is up to the performer. I would rather be in the plane with you in an extreme emergency. Your knowledge of physics IS an edge. Would you rather the guy who buolt your plane had a working knowledge of physics? Or is it ok if he just looks up what equatioms to apply and copy pastes old designs? Both people are applying physics, just because one of them doesnt know it doesnt make that false.

@@TheJDanley that's a good point, I think you changed my mind on that a bit