Відео

Every time you say something like "it's just a beautiful little theory" I can't tell if you're a fan of our former President, or just oblivious to the way he's ruined "beautiful (complicated thing)" for half of us.

Thanks, actually good advice. 🙂

I think I understand that life the universe and everything is far more complex then I will ever totally comprehend and I’m okay with that. You do have a remarkable ability to explain complex topics and leaving one feeling they came away with a lot. That’s real a cool ability I wish I had.😊

Quod confundit demonstratum.

If anybody ever wonders what teaching is like, it's like this. The infinite Sisyphean struggle of saying the same thing and people being like "you never said that, why didn't you say that why didn't you explain it like [insert the way I did here]" And then that happening on exams where they are like "WE NEVER DID THIS" and I'm like you're right, we never did THIS projectile motion, we did 27 others just like it, through active learning methods, which maybe the ultimate proof that lecture alone doesn't work is that I lectured on how lecture doesn't work and it didn't help.

"But what if there is just one electron, zigzagging back and forth through time?"

This is an extremely nerdy nit pick of a thing people say to highlight the importance of conveyance in deeply abstract works. So pretty much my favorite kind of media.

Around 16:00 -- the magnets emit photons when you push them together: so if you put a camera between them you'd see it getting brighter?

"this video aged like milk" - Albert Einstein

“I’m watching this video instead of listening to my lecture” -Albert Einstein (probably)

By the way, I live in Mexico, so purified water is a necessity. No one drinks tap water unless they filter it well. But even the bottled water places offer "alkaline water".

i feel like i understand basically what qcd is about, and why it's so hard, so I think you succeeded! fun fact: the wikipedia article for lattice qcd says basically that "analytic solutions in QCD are extremely hard or impossible to obtain because of the nonlinear nature of the strong force" qed does sound like a fun thing to learn about in college

I wonder what's inside the Halo and can i cook some of it up on my kitchen stove?

It's not a theory but the level of physics you would have to learn to understand the concept is insane. Im still waiting on my picture of the dark portion.lol

I really wish you could see *how much* of the video a commenter had watched when they left the comment. It would answer so much.

People want to believe scams. They don't know how to evaluate sources. Alkaline water is a scam that takes advantage of undereducated marks. Lemons aren't alkaline in the body. As a person who took classes like physiology, chemistry, biochemistry, organic chemistry, anatomy, etc., please, please listen to facts, not nonsensical hype. Alkaline water won't hurt you, but other health scams you fall for might. Take care.

yeah I'm into it

I was born with a debilitating birth defect - high intelligence. My brother was worse, he was Mensa. It took a lot of discipline for me to learn to dumb down to cope with normal society. I’ve been happy ever since. I still ponder things I don’t need to understand like if the earth is spinning at 1,000 miles an hour why doesn’t the centrical force fling me into outer space? My 220 pounds of mass + 1 G is not enough to keep me grounded.

Time travel was only ever ment as a philosophical tool.

Was trying to learn a bunch of stuff about atoms recently so this is very topical.

I understand from a chatbot conversation, (for what it's worth), that the magnetic repulsion you explained with the Feynman diagram is caused by an exchange of VIRTUAL photons. What are those? Maybe.. someday. We can't see them?

Angela Collier: Who cares about the protons anyway, all the good stuff is all is in the electrons. Me: Yess, YESSS. You are on step closer to embracing power of the dark side. Soon you will give up the self-entitled glory of 'fundamental' theory (which is all renormalized garbage anyway) and join us in condensed-matter physics.

I don't know about dark matter, but there's a problem with the model. We should call it "the problem of unknown galactic mass".

great, now i have an effing headache that's gonna last the rest of my life. i'm already tortured by things i was taught in college, but i was too behind in my work to sort out the basic confusion that apparently doesn't bother other people when they're told something that doesn't add up. and now i have to worry about the earth doing negative work on a body, but i'm not allowed to think about how obviously someone has to do positive work to pay for that negative work happening. and obviously i'm never gonna do the math to sort this out, and nobody is ever going to explain it to me while bothering to account for my own special sort of stupid that's causing the problem. i don't know which thing i'm more eagerly looking forward to ... death, or ai advancing so far beyond where it currently is that everybody gets a personal educational genius angelabot assistant to sort out every confusion that life throws at you

Right at the start you had me literally laughing out loud for several seconds as you repeated "alkaline water with a spritz of lemon". Thank you. I needed that. I'm still giggling.

“What we have here is a failure to communicate, if you’re gonna hate, might as well get your rumors straight about DOOM the great” - MF DOOM

Assuming antimatter lives up to the hype an antimatter spacecraft could take you on trips conventional rockets would never manage due to fuel constraints or it could be the difference between a motorbike with a storage compartment and a semi-truck. They make out it's all gonna be about anti-matter = fast when this is probably a pretty low priority in most contexts.

Dr. Collier: "...it'll be helpful for you to know that this (Euler) is pronounced "oiler" and not "Yuler" so when you're standing in front of all the physicists at Jefferson lab in 2010 and you say "yuler" no one will laugh because you know it's pronounced "oiler"... That has an autobiographical ring to it.

how you doing understand that concept is astounding. thanks for putting it at the beginning of the video, though, so we all know that you have no idea what you're talking about from the outset

I thought Eric Weinstein might be being hyperbolic until I saw this.

"I never said that." -Albert Einstein

I'll stick to Louis L' Amour. Practically no sex, little physics to get wrong, and I don't know the old west to spot any of those errors. Of course, the male/female relationships are dated--he died in the 1980's

ai is annoying and ai art generations being promoted as being art are fucking annoying. but I will be honest here, as someone who does do art ( I draw, have since I was in elementary school and am pretty decent) I definitely used an image generator last semeter for my art class for ideas. mostly because the class had me pumping out like 4 pieces a week and I was jsut so fuckign dry on ideas after like 4 weeks. using ai to help with writers block type situations is great. just to kick start you in a direction. but so many just push it as a complete product.

Yeah, if you're not into it why bother? If nuclear physics isn't your thing then why bother. The real idea is the "c" so when a conversation starts with "c" of the nucleus. So either you don't really care, not you don't really know... Einstein "says": you don't know.

How on earth do you integrate through all possible paths from point A to point B?

16:20 "The electromagnetic force is why mass takes up space" Isn't the Pauli Exclusion Principle mostly responsible for this? Even with electrostatic repulsion, electrons could still fall deep into the potential well of the atom and make a very dense atom. Since fermions can't occupy the same quantum state, orbitals exist and take up space, and nearby atoms must not occupy space too near each other or their orbitals will coincide and cause exclusion. Molecules' structure seems to also be linked to this by extension of bonds' shared orbitals. Is this correct? Other commenters, please correct me if I'm wrong.

Underestimating how hard-up people were back then. There are all sorts of stories. Kennedy waltzing through European disaster. Ford rescuing the nazis with a million. Wittgenstein at Oxford. Also, the arrogance of wealth. Oppenheimer was another bastion of privilege. Ignoring fundamental kid logic. Tiny cute and cuddly becomes big ugly and mean, everyone knows that. Evolve is just a word that makes adults nervous.

I know this is an older video and there's already almost 4k comments, but: Have you read Delta-V and Critical Mass by Daniel Suarez? There's no space elevator, but it makes a fairly compelling case for how we *could* get to actually building large scale stuff in orbit, using materials mined in the solar system. It definitely grasps at some sci-fi straws - the idea of flawlessly "printing" out huge structures using chemical vapor deposition felt like a bit of a stretch - but I really enjoyed it! I'd happily listen to you - a proper scientist - break it down good or bad, for an hour or five.

The weird thing is there is no center of the cosmic inflation. Everywhere in the universe sees everything else moving away with more distant things moving away faster than nearer things. The surface of a sphere behaves in the same way. An expanding sphere sees every point on the surface to move away from every other point, and more distant points seem to move relatively faster. Is the universe actually an expanding 4 dimensional sphere?

Notice that when you look back to the beginning of Cosmic Inflation (also called the "Big Bang"), you are looking at matter that became the Earth and the Solar System. How did that matter get here when we can see it back then? The answer is that Cosmic Inflation expanded space faster than the speed of light. *Everything that we see is at the center of Cosmic Inflation.*

Gravity cannot be quantized because gravity is not a force, and there is no such thing as a singularity. Nobody has physically demonstrated singularities to exist. There is no reason to believe that singularities exist, not even in black holes, because curvature of space is caused by the non-zero presence of matter. Gravity is merely and ONLY curvature of space; gravity is not a force but merely redirection or reflection of kinetic energy. NOTHING is inside a black hole, not even existence of space or spatial dimensions; all of its matter that cause curvature of space is contained in its event horizon surface. Time stops at the event horizon surface, so nothing can "fall" inside the black hole. There is no loss of information, because all of the matter that causes curvature of space is contained in the event horizon surface. The event horizon surface of the black hole is an "edge" of the universe reality. Gravity is merely the curvature of space as it is "pushed out of the way" by matter. Gravity is not a force, but only the reflection or redirection of kinetic energy that is already in the matter. That's why objects of unequal mass will accelerate at the same rate under the influence of gravity. If gravity was a force that was imparting its energy into objects, then the objects of differing mass would not accelerate at the same rate. For objects of differing masses to fall at the same acceleration rate, they must be invested with differing kinetic energy relative to their masses by lifting the objects. Where did the original "lift" of kinetic energy come from? Cosmic inflation (also known as the "Big Bang") provided the original "lift" to invest the kinetic energy that is now in all matter in the universe. The question is whether cosmic inflation, which happened faster than the speed of light, was sufficient for the "escape velocity" to prevent future gravitational collapse of the universe? It seems to me that cosmic inflation was not an inertial frame of reference, so "escape velocity" has not happened, because it only applies to inertial frames of reference. The universe will ultimately collapse, causing an unending series of births and deaths. The universe is finite, unbounded, and eternal.

I did group theory and began to get the idea of how it would apply. But then dived into electron transport... I would like to pick up where i left off. Another great vid! Thank you!

08:43 do you earn money from your youtube videos? Maybe you are a professional science communicator?🤔

I do actually love how most of this video is talking about QED

4:54 I dont want to get my hopes up but i am really happy to see that the "!" Has a space before the 8. Avoiding factorials are we? Nerd overload.

General Relativity and the Equivalence Principle - extremely complex. Einstein's "happiest thought": "A man in a falling elevator does not feel his own weight." - pretty intuitive. At the core of most complicated things is a core concept. It doesn't provide the essential details, but it is the concept that all of the details hang off of. I believe Einstein was expressing that If you are so caught up in the details that you don't recognize the core concepts, then you don't truly understand the topic. The true test is whether you can explain the core concepts clearly and simply.

Great video! You almost lost me each time you mentioned the positive pole of a magnet. I recovered. I got to the end. It was worth it.

Cool Hand Angela... You're not trying to communicate with a Florida chain gang, but with people who consider themselves to be educated intellectuals. The mindset of these people is not to absorb information, but to come up with the most clever comments. Like this. You can't obsess about comments. They are made by people who have nothing better to do than watch UA-cam, and who imagine that they have something intelligent or clever to say. Like me. My milk has vintages. It doesn't go bad, it just changes.

I feel like this is 30 minutes of Angela telling us she doesn't like physics name. Okay, but like having watched to the end, if the conclusion is "We can't explain QCD, because it's a bunch of unsolvable math", isn't that technically compatible with the claim that "We don't understand QCD" (from "if you can't explain it, you don't understand it yourself"). Usually, in this sort of argument, I would expect one to say "We understand the math very well, but we can't just explain the math to a 6-year old", but in this case do we really understand the math? We understand the tricks and approximations perhaps, but not the unsolvable problems themselves.

Ah, the parameter space goes factorial. Yikes.