0:22 professors avoid talking about general relativity outside of a course dedicated to it at most schools iirc. It’s to tough to explain to undergraduates in a few days in a gen physics course, so they just give up
You need math tools beyond your basic vector calculus and linear algebra to really get into it, not super crazy advanced, but still beyond what engineerings and physics minors usually do. The argument of teaching general relativity over basic mechanics is equally nonsensical as saying we should use quantum mechanics to describe macroscopic phenomena because, if you can describe systems at tiny scales, you should also be able to do it at a bigger scale. Sure, it should be technically possible, also insane (not to mention the lack of a unifying theory). I could go on, but the point is that there are different tools for different scales and different cases because it makes sense, it's useful and getting into the minutiae doesn't always bring you a better understanding of the subject, but it can obfuscate the bigger picture instead.
Basically for systems on the scale we actually come into contact with it's a good-enough approximation, yeah. Systems of measurement break down completely on extremely small and large scales.
@@timeforamazingchest5271 also, 1 meter is measured at about the same acceleration and gravity pull, as well as time, so general relativity can't really be observed on earth with a naked eye. Honestly, I'm not quite sure how I ended up talking about GR on a Vtuber chat
Also the common form of his law taught in highschools (F=m.a) is not the _actual_ defined form of his law, which would be F=dp/dt. It's just that we generally assume mass to be constant, which the definition doesn't.
Okay, but imagine deriving the trajectory for a baseball from Einstein's equations. You can do it, but unless you're playing baseball on a neutron star, Newton is good enough.
@@Handleoriginal12 “Dating yourself” means revealing your age without saying it outright. For example, if I were to say that I spent my childhood playing PS1 games, I would date myself as someone likely in their late 20s to early 30s.
The funnel depiction is actually a representation of gravity in 2D. Keeps confusing people to the point where they end up reading it as space-time curving _away_ from objects - which is the opposite of what it's supposed to depict...
THIS is the reason why I subbed to Lemonleaf back then! ❤🥹 This is so nostalgic, I was watching Gura’s RedDead2 stream (that she never finished), and saw this Vtuber discussing photosynthesis, and stuffs like relativity, & I juz subbed to her or watch her clips. Then 2021 happened & watched HoloCouncil’s debut, managed to watch Fauna and Bae livestream. Watched Fauna on their first HoloCouncil collab, & still nothing clicked until Fauna’s first ASMR and I went like-WAIT THAT’S HER🍋🍃!!!!!! 😱😱😱🥹😭❤️
1:30 This rubber sheet analogy is actually a common misconception. The image makes it look like the space around the black hole is curved, but it's actually not the case, it's the *time* component of spacetime that is curved. Basically we experience gravity because our time axis gets bent towards massive objects, and the space curvature is almost negligible. The only reason we talk about "spacetime" curvature and not just "time bending" is because of close-to-light-speed shenanigans that transform time into space and so time curvature into space curvature.
There was this one video that explained light as the speed limit in a pretty intuitive way: if light is the fastest medium of exchange of energy between matter, then how can you make matter go in one specific direction faster than the light needed to go faster than light? As you approach light, it takes a lot more time for the medium of energy exchange (at most lightspeed) to reach the object you’re trying to accelerate since the object itself is moving near the speed of light.
...thank you for the sudden inspiration again, oshi. Now I need to finish that bet with my childhood classmate about disproving string theory. Even if that kind of...has very dire consequences for entropy.
She drew on the now-public members streams, which I don't think contradicts your theory. With her opening up about the imposter syndrome she felt at the start and her senpai and genmates including the likes of Ina and Sana, I don't think it's unlikely. She might just have lost her passion for it, though, similarly to how she described her situation with ASMR.
I loved taking physics. The thing that blew my mind was learning that space time also gets strange when you are traveling at speeds close to the speed of light. Person traveling faster will experience less time passage than the person staying still.
Do note that neither person is moving faster than the other. From the perspective of either person, it's the other one moving fast. The key isn't in which person is moving faster, it's that one of them makes a return trip by accelerating back towards the initial location, and that force of acceleration only applies to one of them.
Relativity is that things get wackier the greater the difference in speed between two objects are. What wacky effects you see depends on which viewpoint you're observing from. Object A, Object B, or Neutral Observer C. It's all relative, therefore, Relativity. Newton's Laws work for the most part but there's an extra "wackiness" bit tacked on, which scales with speed difference (with the speed of light being the max). At low speed differences, the "wacky value" is effectively non-existent. At high speed differences, the "wacky value" is huge. --- Disclaimer: My description is not totally accurate and is a gross simplification of the math that is happening. But basically, something go fast, crazy stuff happens. Draw conclusions on the nature of reality from that. Then something something, oh my god Black Holes.
The classical limit exists to show the continuity between more precise models and classical physics. Newton wasn't "wrong" inside of the context where his models are useful.
![Riona is Way Too Downbad for Niko While Talking to Subaru [Eng Subs/Hololive]](http://i.ytimg.com/vi/dNnBhtRiq-8/mqdefault.jpg)
Bro is spawncamping her lmao
also a necromancer
Gotta get in that grind early
She went from discussing twilight to Einstein
0:22 professors avoid talking about general relativity outside of a course dedicated to it at most schools iirc. It’s to tough to explain to undergraduates in a few days in a gen physics course, so they just give up
You need math tools beyond your basic vector calculus and linear algebra to really get into it, not super crazy advanced, but still beyond what engineerings and physics minors usually do. The argument of teaching general relativity over basic mechanics is equally nonsensical as saying we should use quantum mechanics to describe macroscopic phenomena because, if you can describe systems at tiny scales, you should also be able to do it at a bigger scale. Sure, it should be technically possible, also insane (not to mention the lack of a unifying theory). I could go on, but the point is that there are different tools for different scales and different cases because it makes sense, it's useful and getting into the minutiae doesn't always bring you a better understanding of the subject, but it can obfuscate the bigger picture instead.
As a physics major, Newton was right, but for things on the nakedness eye and on earth, once u go small/ outside earth, things start to get weird
Basically for systems on the scale we actually come into contact with it's a good-enough approximation, yeah. Systems of measurement break down completely on extremely small and large scales.
@@timeforamazingchest5271 also, 1 meter is measured at about the same acceleration and gravity pull, as well as time, so general relativity can't really be observed on earth with a naked eye.
Honestly, I'm not quite sure how I ended up talking about GR on a Vtuber chat
Also the common form of his law taught in highschools (F=m.a) is not the _actual_ defined form of his law, which would be F=dp/dt. It's just that we generally assume mass to be constant, which the definition doesn't.
Okay, but imagine deriving the trajectory for a baseball from Einstein's equations. You can do it, but unless you're playing baseball on a neutron star, Newton is good enough.
Baseball on a neutron star, sounds fun.
@@faq_is_love how about baseball on a world tree? 😁
This is one of the reason why i love her
I love this nerdy lady
The bango kazooie music 😂 shes definitely one of my age
Same lol, she's low key dated herself a few times and I think it's funny because it's the same things I did when I was a kid lol
@@starfan6299okay I don’t mean to judge but I’m just curious. How does dating oneself work?
@@Handleoriginal12 “Dating yourself” means revealing your age without saying it outright. For example, if I were to say that I spent my childhood playing PS1 games, I would date myself as someone likely in their late 20s to early 30s.
Oh my god she gives me chills when she talks about physics!!
1:22 GET THE COWKINI
that bgm makes it so funny
The funnel depiction is actually a representation of gravity in 2D. Keeps confusing people to the point where they end up reading it as space-time curving _away_ from objects - which is the opposite of what it's supposed to depict...
THIS is the reason why I subbed to Lemonleaf back then! ❤🥹
This is so nostalgic, I was watching Gura’s RedDead2 stream (that she never finished), and saw this Vtuber discussing photosynthesis, and stuffs like relativity, & I juz subbed to her or watch her clips.
Then 2021 happened & watched HoloCouncil’s debut, managed to watch Fauna and Bae livestream.
Watched Fauna on their first HoloCouncil collab, & still nothing clicked until Fauna’s first ASMR and I went like-WAIT THAT’S HER🍋🍃!!!!!! 😱😱😱🥹😭❤️
I love this yapping lady
Free chatting
1:30 This rubber sheet analogy is actually a common misconception. The image makes it look like the space around the black hole is curved, but it's actually not the case, it's the *time* component of spacetime that is curved. Basically we experience gravity because our time axis gets bent towards massive objects, and the space curvature is almost negligible. The only reason we talk about "spacetime" curvature and not just "time bending" is because of close-to-light-speed shenanigans that transform time into space and so time curvature into space curvature.
If you close your eyes it almost feels like she never left at all.
There was this one video that explained light as the speed limit in a pretty intuitive way: if light is the fastest medium of exchange of energy between matter, then how can you make matter go in one specific direction faster than the light needed to go faster than light? As you approach light, it takes a lot more time for the medium of energy exchange (at most lightspeed) to reach the object you’re trying to accelerate since the object itself is moving near the speed of light.
She is one of my people
God damn it, i thought i've missed the redebut!!! DAMN YOU for making me panic!!
That's my oshi right there, god she's such a nerd
Just ask a certain Australian space lady
To be fair, Einstein is pretty widely known to have either copied it wrong or copied a bunk theory.
Ahh playing with space and time... and I am talking to you Nimi Nightmare Clips.
...thank you for the sudden inspiration again, oshi. Now I need to finish that bet with my childhood classmate about disproving string theory. Even if that kind of...has very dire consequences for entropy.
Yo imagine her but in green! that would be awesome.
why did fauna never draw? did she felt inferior to the other members? here it felt like that she has a little bit of knack for art
@@kroanius8808 She did in members-only streams. They should all be public now if you want to check them out.
She drew on the now-public members streams, which I don't think contradicts your theory. With her opening up about the imposter syndrome she felt at the start and her senpai and genmates including the likes of Ina and Sana, I don't think it's unlikely. She might just have lost her passion for it, though, similarly to how she described her situation with ASMR.
I loved taking physics. The thing that blew my mind was learning that space time also gets strange when you are traveling at speeds close to the speed of light. Person traveling faster will experience less time passage than the person staying still.
You don't even have to get close to the speed of light, the original Hafele-Keating experiment had clocks aboard normal commercial flights.
@@timeforamazingchest5271 I know, which makes the whole thing even cooler!!!
Do note that neither person is moving faster than the other. From the perspective of either person, it's the other one moving fast. The key isn't in which person is moving faster, it's that one of them makes a return trip by accelerating back towards the initial location, and that force of acceleration only applies to one of them.
Relativity is that things get wackier the greater the difference in speed between two objects are. What wacky effects you see depends on which viewpoint you're observing from. Object A, Object B, or Neutral Observer C. It's all relative, therefore, Relativity.
Newton's Laws work for the most part but there's an extra "wackiness" bit tacked on, which scales with speed difference (with the speed of light being the max). At low speed differences, the "wacky value" is effectively non-existent. At high speed differences, the "wacky value" is huge.
---
Disclaimer: My description is not totally accurate and is a gross simplification of the math that is happening.
But basically, something go fast, crazy stuff happens. Draw conclusions on the nature of reality from that. Then something something, oh my god Black Holes.
As a nerdy guy myself.. man, nerdy women are EXTREMELY attractive.
*What a Yapper* lol
I wonder if we can get her started on Pi?
The classical limit exists to show the continuity between more precise models and classical physics. Newton wasn't "wrong" inside of the context where his models are useful.
Einstein would be so proud that anime girl on the internet thinks his theory is cool
Is Lemonleaf streaming now or anything like that? Or is this archived footage from years ago?
The latter, we're still waiting for her redebut.
what a nerd, amiright
Are these her old clips or has she started steaming again
Old clips from 2020, still waiting on her redebut.
@Hakudamashi ah thank you kind sir
She is Brian Cox daughter... Probably :')
What did she study?
Bro hoơ can you be so fast
wdym fast
@@Archimedes.5000 It's a joke..
hi fauna e🤣🤣🤣🤣
Matter tells space how to curve
Space tells matter how to move
Isn’t this the girl that can’t do gradeschool math???
That's gura (my wife)
@@rin0108_ Well she takes after her oshi
most vtubers cant