Several people have pointed out to me that there is a fake account posting here (and possibly elsewhere) under my name. This account has been reported (by me and several other people). But since this may happen again please be advised that the "real" me has a checkmark after the name.

@CAThompson

3 жыл бұрын

Danke.

@w0tch

3 жыл бұрын

You know you could tell us if a failed quantum experiment led to a duplicate Sabine trying to appropriate your life 😅

@rosalieroku3818

3 жыл бұрын

I knew you were having doppelganger problems.

@layton3503

3 жыл бұрын

I think the universe expands into itself

@CAThompson

3 жыл бұрын

@@w0tch Dupe Sabine is pretty ersatz. There is a short story called 'The Copy', where a boy duplicates himself then finds his clone taking over his life.

As I get older, I can confirm without any doubt that I am expanding.

@georgemrwilde2384

3 жыл бұрын

@Sand Fred Into dress.

@stant7122

3 жыл бұрын

Did you determine that internally or by observing yourself in the embedding space ie. mirror ?

@vhyles

2 жыл бұрын

Lmao 🤣🤣

@paulembleton1733

2 жыл бұрын

I’ve been contracting recently after expanding to fast.

@fjames208

2 жыл бұрын

To where

I'm just a 77 year old, who barely graduated high school. I've always enjoyed thinking and speculating about this subject. It's just SO fascinating. Thank you for your helping to understand space/time. I may never understand it all, but trying to is wonderful for the brain.👏👏

@fivish

3 жыл бұрын

Nothing here is fact, its all maths and speculation.

@NiToNi2002

3 жыл бұрын

@@fivish Not so. The expansion of the universe is based on observation, not maths. As a matter of fact, we can’t even agree on what rate it expands at, which we could if it was pure maths.

@ithinkthonkthunk5333

3 жыл бұрын

@@NiToNi2002 observations of phenomenon do not prove anything without experimentation. John King is correct - nothing here is fact...it’s all just pseudoscience.

@dks6983

3 жыл бұрын

77yr old eh? You got space, but less time..... some years later you will have no time and thus you wont even occupy any space. is that how Space and time are connected? MIND=BLOWN

@bibidibabidi7236

3 жыл бұрын

@@ithinkthonkthunk5333, incorrect. You do not always have to perform an experiment to prove something. Science is not always bounded within the human scale, in terms of time, space, energy, and other parameters. You do not have to experiment with internal solar activities to prove that it is powered by nuclear fusion. Observations can serve as proof, not every time, but they still can. The observation on the angle at which shadows of objects under the sun are casted would prove the sun's location in the sky, without necessarily looking at the sun itself. Most information in this video are facts, left for those clearly indicated by Sabine as speculations or the likes. The only thing 'pseudo' here is your belief that you understand anything about science. Perhaps, you should go back to watching conspiracy videos, where you may feel more intellectually comfortable.

I love watching Sabine for the following reasons: I'm Brazilian and Portuguese, I'm not a physicist, I love physics, my native language is Portuguese and my second language is English, but I can understand Sabine speaking in English very well!

Feynman would be proud of your efforts here. The physics is amazing, and I haven’t found a doorway into it until now. I’m probably not smart enough, given my teachers all seem to just turn their backs and start drawing equations. But you do a great job of showing what we’re trying to get at with the equations. The sphere inside a cube, plus the subsequent minute or so of explanation cleared a big chunk of confusion from my mind. (Well, I feel better anyway…) I have been trying to get to grips with curved spacetime… This at least helps me see what my question should have included but didn’t. Outstanding!❤

@SabineHossenfelder

7 ай бұрын

Thank you from the entire team!

"Cylinders are internally flat." I might have to think about that for a few years.

@eljcd

3 жыл бұрын

It's not so hard. Take a sheet of paper. It's flat. Now roll it. You have a cilinder now. In one direction it curves, following a circunference. But in the perpendicular direction, follows a straith line,is still flat.

@hexeddecimals

3 жыл бұрын

It has to do with a measure called gaussian curvature. It takes the curvature of perpendicular lines and multiplies them together. A straight non-curved line has curvature 0, a line curved up has curvature 1, and a line curved down has curvature -1. In one direction the cylinder is curved positively yes, but in the perpendicular direction it is completely straight. 1×0 is 0, so the cylinder is "flat"

@peterwexler5737

3 жыл бұрын

Drink enough cylinders of beer, and you will understand.

@peterd616

3 жыл бұрын

There are a lot of ways to think about curvature, the curvature mentioned in this video is the intrinsic (or Gaussian) curvature. In another sense of curvature, it is true that cylinders curve (in one direction). However, the statements in the video about the internal angles of triangles are really caring about the intrinsic curvature. What makes this curvature intrinsic? Intrinsic properties are properties that don't care about the embedding. If that sounds a little complicated, what it means in terms of the curvature is that you cant bend a "flat" thing like a piece of paper into a "curved" thing like a sphere. It's very easy to bend a piece of paper into a cylinder (we've all made little telescopes out of paper before!) but impossible to bend it into a sphere. This is also the reason you cannot flatten an orange peel (without crushing it) - the orange peel has positive curvature, but a flat thing has zero curvature. There is actually a third type of intrinsic curvature - negative curvature. The example normally given is "saddle shaped", but I prefer to think of it as shaped like a pringles crisp. In negatively curved space, triangles have less than 180 degrees! This space is sometimes called "hyperbolic" space. To go back to the piece of paper analogy, if you laid the piece of paper down in front of you, in order to make a cylinder, you bend two opposite sides towards each other. In order to make a sphere, you would have to somehow bend all four sides at the same time, and if you try this you'll find it is impossible. In order to make a pringles shape, you have to bend two opposite sides together like a cylinder, and the two remaining sides downwards at the same time. This is also not possible. The paper will not cooperate. Stupid paper.

@sleepingwarrior4618

3 жыл бұрын

@@eljcd it isn't flat you fool.

Sabine Hossenfelder opens doorways to understanding like no other instructor. Five Golden Stars for Dr. H!!

Love your no-nonsense approach to physic.

"The part about my job that bothers me most is the need to work on something that is popular or to work with people who are popular. I have always had, and still have, trouble funding my research because I tend to be interested in topics that few of my colleagues find relevant. I almost left academia because of this several times, and I still feel every other year that academia just isn’t for me. If I can only get funding to work on research I don’t consider promising, then what’s the point?" - Sabine 2020, physicsworld, "ask me anything" We recognize her.

@carnivoroussarah

2 жыл бұрын

I second that. I recognize her too. Very glad she's moved to yt. Maybe she'll get funding somehow through sponsors or such. I wish her the best! And am curious to see her conclusions! It'd also be nice if she'd be funded traditionally, but I'm super proud of her for getting on yt and thinking outside the box. I can tell she's a good lady.

@6023barath

2 жыл бұрын

This aspect of academia makes me question if I should go into it at all.

@TrilobitesRTasty

2 жыл бұрын

Sounds sorta like why I chose to pursue industry, instead of a academics after the masters. Forty years ago, I figured whether in industry or academics, I would have to put up with a lot of politics and b_____. So may as well choose the path that pays more.

@KibyNykraft

2 жыл бұрын

@@TrilobitesRTasty Industry has always paid. Of course a tech-ish related profession will although being important for society, ironically render a potentially narrow mind in the bigger more cosmological questions. If we think about the most innovative developers in the history of specific innovations, they usually had a good talent and more or less ok +degree of realism in both classical engineering and theoretical understanding of nature. The modern day scholar tend to be hyper theoretical in very speculative ways often involving abstracted maths used to just hide the limits or superstitions of their thinking. It is from these people we get diversions like virtual particles or time-aether-blob space concepts.

@KibyNykraft

2 жыл бұрын

(unfortunately, flat-earthing, babbling about little green men "from other solar systems", and the postmodernistic exaggeration of the Copenhagen interpretation that we see as a disease in mainstream physics now are all usually well paid activities, either by private or/and public money)

I love these videos, but generally get lost about halfway through. It's like a switch in my head and my brain goes "Welp, I'm out." But what encourages me is that there are people like Einstein/Sabine who really *do* understand this stuff, which gives me hope for the human race. Just think, roughly 3 pounds of physical brain can approach understanding the reality of the universe. That is just...magnificent.

@thomasashley-smith245

Жыл бұрын

Well… define “understand”? I don’t think even these greatest minds “understand” like we may think… they just look at the data and the evidence and in light of no alternative model, accept what it tells them…it’s just as hard to visualise or conceptualise as imagining infinity. Take for example that the universe is “not expanding into anything”… firstly I can’t “understand” that based on my empirical experience. But if I were to follow the math and after peer review found it sound, I would have no choice but to accept the evidence. Secondly when we think of the words “doesn’t expand into anything” we imagine “nothing”.. but it’s probably more like the concept of the question “what is south of the South Pole” - Since space time gives us the meaning of a thing, it is a nonsense to ask what does the universe expand into… Or summit like that….

@GTSN38

Жыл бұрын

They don't understand anything, half or most of this is speculation. I don't understand either, but I'm not bs people into thinking I know something they don't.

@deemika

Жыл бұрын

@@thomasashley-smith245 I agree with you 100%. Sabine is simply trying to explain something of which we still have limited knowledge of. As mankind learns more, it will change its explanation of this topic.

@yupok318

Жыл бұрын

That's your brain sounding the bullsht alarm. When things don't seem to make sense it's because THEY DON'T!!! None of this nonsense is in any way scientific. It's all mystical, religious, gibberish. You are being baffled with bullshit.

@dracs007

Жыл бұрын

@@thomasashley-smith245 using nonsensical analogies like what’s south of the South Pole is what these guys do to feed us nonsense. There is no data, no math that can definitely state that universe that is finite can expand without any sort of void outside its membrane( just a word I came up with the outer edges). Another one I love is how they say universe came from nothing, but if you ask them what this nothing is, they don’t know. I’m not a religious nut case who suggests God created us, but I will never accept this notion that emptiness is finite. If you really think about it with common sense, there are only two possibilities. 1) the universe is infinite. 2) our universe is not infinite but whatever gave rise to our universe is. To suggest there is only one universe and that one universe is also finite that expands into itself is not very different than suggesting God created the universe in 7 days.

Thank you so much Sabine, your insights and explanations have been testing my understanding of the universe in the most amazing way. I watch each of your videos intently and stop, watch, rewind and proceed until I am satisfied that I have unpacked and understood what you have said. I feel like I have my own personal lecturer. Thank you so much for your time and efforts in bringing these most amazing and interesting topics to the world in a wonderful and fun way.

@robertsavage8270

Жыл бұрын

The answer about what space is expanding into is so easy you have missed it. This much seems true. Everywhere you look into the sky, you are looking into the past! The farther you look, the farther in the past you see. Therefore, an expanding universe is actually expanding into the past.

You have blossomed in the past year! Love you. Are there respected cosmologists who aren't satisfied by this explanation? That is, are there competing explanations? Competing questions? A non-cosmologist can't rule out that this may be the wrong solution fork or simply begs the question.

My knowledge just expanded although it didn't expand into anything.

@kevindickson2178

3 жыл бұрын

i think your knowledge expanded into my mind bc i'm pretty sure my mind shrunk.

@guitarista666

3 жыл бұрын

Are you saying your skull is empty? :>)

@MarlonLuna

3 жыл бұрын

Or, you could say... The knowledge DENSITY increased within the context of the volume of your mind 😉

@Nola50

3 жыл бұрын

😂

@Nola50

3 жыл бұрын

@@MarlonLuna 🤯

The reason people ask you even though there are other videos is because you make it interesting! Even being a physicist myself, I love the way you explain things.

@eugenelamour1086

3 жыл бұрын

As a physicist you should be annoyed by all these clownish thesis?

@pseudonymousbeing987

3 жыл бұрын

@@eugenelamour1086 What do you refer to?

@eugenelamour1086

3 жыл бұрын

@@pseudonymousbeing987 Spooky action at a distance...what a joke. GRT and QM fundamentally disagree. One requires discontinuum and the other continuum. QM only works because you use a general Formula that needs a set of special factor for every occasion. And the space /time equation is a circular logic. E=mc2 violates math as it would need to be light velocity 1.41 times c. Because the derivative of velocity is V^2/2....Take a look at the Electron from Lesseirg Papers.Might be interesting.

@RandomPerson-iw3mw

3 жыл бұрын

@@eugenelamour1086 who are you

@pseudonymousbeing987

3 жыл бұрын

@@eugenelamour1086 Mainstream physicists believe all the currently accepted theories are the closest to the truth we have due to the theory's empirical grounding and accurate predictions. I am confused that you are surprised that a physicist agrees with modern physics. It doesn't matter that spooky action at a distance is spooky and weird. What matters is that we are very sure that it is real due to experimental evidence. Everyone really wants an explanation but they're not going to throw out data because it's counterintuitive. It doesn't matter that QM and GRT disagree in the way you think it does. It means that they're both missing something yes, but it's unlikely that they are outright wrong. They are simply accurate to an extent. Scientists know this. It is inevitable that incomplete explanations will contradict one another before they are refined (or even revolutionised). Special factors. Yeah so what? You are surprised that reality has certain parameters? Constants have been needed since before quantum physics. Space time equation? Equation *s* presumably? Circular logic? Haha is that one a little pun lol. I don't know what you're talking about with this bit but the jokes funny. That's the integral of velocity is it not? What's it got to do with anything? 1.41? What? Lesserieg papers? As of now I'm not inclined to look it up, you may yet convince me but sorry I can't really be bothered with big reading right now.

Fantastic video, Sabine. As a quick aside to (8:20-8:30), comoving coordinates that expand with the universe are used all the time in computational cosmology, as the basic framework of simulations of dark matter haloes and galaxies in a cosmological context. (I'm sure you know this.)

Sabine work has really helped me on my journey to understand physics. Great production values, info I can trust, and delivered in a way that a noob like me can mostly understand. Nice work. Thank you.

To simplify, a lot of it is convention. We could be expanding inside a higher dimensional construct, but since we by default cannot observe that construct we have no reason to think it's even there in the first place. So the convention is we don't expanding into anything, the distances between non-force bound objects just increases in a fixed universe construct we live in. I suppose that does sound a lot like shrinking, but that's not really what happens because force-bound matter reserves their dimensions so we aren't shrinking, but if you viewed our universe construct from a hypothetical outside (the mentioned embedded space) then yeah it would appear as if we were shrinking. However that would just be a perceived effect and not physical reality. It's because we are using the edges of a fixed universe as reference for measurement. It's similar to how we perceive the Moon with our eyes to determine its size. It appears smaller or bigger depending on what we use as a reference to see it and judge its size using our eyes, but the Moon never actually changes its dimensions. That's why GR is hard to wrap your head around at first because it throws absolute frames of reference out the window. The bit about do we expand with the universe is correct, at least in terms of General Relativity, since forces like gravity and the strong nuclear force hold us together and doesn't let particles drift apart from each other as the space underneath expands. General Relativity is not really intuitive so it's no wonder these conventions are confusing. One thing more important than conventions in a model though is the observations we have made. The most important one is the mentioned redshift of galaxies. It appears every galaxy outside our neighborhood is getting redshifted when we observe light coming from it and the dimmer it is (the farther away it is) the more redshifted it is. The only sound explanation for this phenomena that is consistent with our tested and proven models is the expansion of the universe, so that's why we believe this is what is physically happening. However there are other ideas such as that space doesn't expand at all and the universe is static, it's just that light "ages" with time and loses energy, so it makes sense things further away take longer to reach us and lose more energy on the way. The problem with this idea is that this process is not really explained by any model that we can test and since GR is so well tested in experiments, we tend to stick with the explanation within the GR model.

@klaustrumputin-trudeau4142

3 жыл бұрын

What if space itself is not a nothing but a something that is faster than light or any other force or particle?

@pedrolmlkzk

3 жыл бұрын

You complicated too much the explanation and so it became too hard for people to understand

@fzigunov

3 жыл бұрын

"To simplify, (...)" and then writes an essay longer than the original video script. Lol

@gravoc857

3 жыл бұрын

@@pedrolmlkzk I understood it just fine.

@pedrolmlkzk

3 жыл бұрын

@@gravoc857 good for you!

Thank you. The fact that so many view your videos explaining abstract "things" within one day, gives me confidence in the future.

I am not astro physicist but this video has answered my inner random thoughts which i didnt know what to search for. Very good

Thank you Sabine! My daughter & I love watching your videos.

"I could be bounded in a nutshell, and count myself a king of infinite space, were it not that I have bad dreams." (Hamlet II.ii)

@agimasoschandir

3 жыл бұрын

We are but finite guests hosted in the infinity of dreams (youTube comments)

@1SpudderR

3 жыл бұрын

Hmm? Somehow you can relieve the internal pressure.....in the Nut! Fart.....that will awaken you from a bad dream!

@biancabonet

3 жыл бұрын

Pinch yourself and rip the skin open and out will come the rationality.

@dallasswoveland4466

3 жыл бұрын

@@biancabonet It didn't work!!!

@biancabonet

3 жыл бұрын

@@dallasswoveland4466 I'm sad for you. Wake up and smell the roses!

Now for a compliment - I discovered your channel after an episode of PBS' Space Time (which I have been following for years). Since then, I have also been following your podcasts and really enjoy how you explain complicated matters in understandable ways for us non-physicists. I look forward to every podcast :-)

Hurray! That was a delightful explanation. I'm not sure I'm completely persuaded about some of the statements, but the explanation is coherent, and makes sense and can be rationalized with others. I really cheer for this video. Wonderful.

I love your common sense and incisive thinking. Thank you so much for your videos.

I was going to get an early night. But this is one of my favourite topics.

@BOBANDVEG

3 жыл бұрын

Comic books call the area outside of the expanding universe "manifestacia"

@randomblueguy

3 жыл бұрын

@@user-fe9fj4vw4y Why do you feel the need to scam others? Nobody is going to fall for that, it’s clear that this is not actually Sabine.

@_John_P

3 жыл бұрын

@@user-fe9fj4vw4y

@jus_sanguinis

3 жыл бұрын

Every time she says "curvature", I hear "Gorbachev". ))

@MyStarPeopleExperiences

3 жыл бұрын

@@BOBANDVEG You have a fake account posing as Dr Hossenfelder. Many have reported you.

7:01 damn and here I thought I found the reason I'm taking up a bigger volume with age

@Scootphoria

3 жыл бұрын

You're an anomaly ;)

@thesoundsmith

3 жыл бұрын

You're expanding into yourself...

@1curiocat

3 жыл бұрын

Yeah, I noticed that my clothes were shrinking relative to me. At first I thought it was my washing machine, but it turns out it was my fridge

@sparkey4293

3 жыл бұрын

Maybe Sabin can help with that shrinking trick used. I’m having a similar problem with my clothes with a slight variation my clothes are shrinking in the x and z axis the y axis is still holding steady.

@MrScrofulous

2 жыл бұрын

That would make a great cafe name ...."Einstein's Kitchen".....where universal expansion is not a choice. You can't blame me, blame Einstein.

Cool. I follow it to the General Limit of my Relative understanding. Thanks Sabine.

Love your taste in subject matter! I swear that every time I follow a line of logic and search for explanations that will help my process I ultimately end up here listening to your data driven approach. In this case amidst my reasoning over the question of embedding space dilation(ty for the term) I of course had to posit the distinct difference of whether the space between is lengthening or are galactic systems receding from each other? I understand the time dimension complicates any attempt to make a real differentiation, in fact I'm fairly certain most systems make just as much sense in either dimension of time.. I think. Anyway, yeah I guess it doesn't matter although it disturbs me greatly that I cannot perceive everything inside our embedding space from an outside perspective. It's possible that we are all but a mirage of extreme circumstances born of space dust and pure light. Thank you for the insight.

@robertahrens5906

Жыл бұрын

Yeah what he said

Sabine I really admire the way you think and explain things out. We're very lucky to have someone like you spending time on making these contents, it is much appreciated!

@thephuntastics2920

2 жыл бұрын

At the same time she has no clue whatsoever.

@radiowallofsound

2 жыл бұрын

@@thephuntastics2920 that's a bold statement, I'd suggest you to be more specific, and I mean, very very specific.

@d.jensen5153

Жыл бұрын

@@thephuntastics2920 Seems to me she understands - and can explain - General Relativity as well as anyone alive. Whether General Relativity is true and complete are separate matters. What do you have to offer? A she-wolf nursing some abandoned twins?

Dr. Sabine Hossenfelder, I am just binge-watching your videos because they are soo good. I know that as a Ph.D. student I am not supposed to waste so much time on youtube but I really cannot help it... they are just soo good. Thanks for making these.

If you construct a warp drive that folds the space in front of you, are both you and space traveling through embedding space while skipping time in timespace then?

Thanks Sabine. I really appreciate your insight and the clarity of your explanations. These are complex topics that you somehow manage to explain in a more understandable way. I love watching your material!!

@anubispatron

Жыл бұрын

Insight, I'm still confused AF. So many terms like 10 dimensions, WTF is that, 4 dimensions is insane enough to warp my mind, don't throw 6 more. The more an more I learn about this, the less convinced I become we have any answers.

@cifey

Жыл бұрын

@@anubispatron I feel like the universe itself must be much simpler than the math used to describe. How could something so complex come to exist with out any form of selection?

@anubispatron

Жыл бұрын

@@cifey It honestly feels like they are making the craziest sounding garbage up to fill in the missing knowledge. Its ok to say I don't know, at least its honest, and sounds far more plausible then these 10 dimension sci-fi excuses.

@fu6817

Жыл бұрын

@@anubispatron It's all bullshit to get funding for next year.

I've been trying to get my head round this concept for years -- brilliant explanation, I finally get it.

@somendrasharma4907

2 жыл бұрын

Really? Explain it to me maybe? What I understood was that they too don't know... Leonard's mom here says that we can have that 10 dimensional embedded space right? We are just not able to understand it. Also there can be a higher dimension....so what is that dimension and is all this sentient? I mean, is there a grand design? Also, can there beings or conscious things (don't need to be biological) existing in these higher dimensions? So many questions still?

@soapvar

2 жыл бұрын

@@somendrasharma4907 get some nice DMT, they'll explain when you get there

Do atoms and/or gravitationally-bound structures "feel" the expansion of space? ie. does the nuclear force fight against the expansion? And one more question: Does the time dimension also expand?

@Flomes

3 жыл бұрын

Yes to the first question. Since the expansion is accelerating, some think that one day galaxies won't be able to contain the stars, then solar systems won't be able to keep the planets orbiting and in the end molecules/atoms won't be possible.

@beurksman

3 жыл бұрын

Yes everything experiences the expansion of space but not time. Every other force is so much stronger that it is basically negligible except for gravity at very long distances.

@DoctorHomunculous

3 жыл бұрын

Thanks for the answers! Sabine's viewers are the best :)

@juzoli

3 жыл бұрын

@@Flomes It is more than “some think”. This concept is widely accepted by scientific community, and it depends on the rate of expansion.

@juzoli

3 жыл бұрын

@@user-fe9fj4vw4y Gtfo with your fake spam account.

I really enjoy Sabine explaining in a very interesting way. One thing that is confusing me that scientists are using the language “ It just happens that way” or “ That is the way it is” which is very analogous to the religious philosophers that also says the same, at some point of the argument.

You have a wonderful ability to explain extremely complex ideas in an understandable way. Thanks, Sabine

Dr, Hossenfelder - you should host an “ask me anything “ episode to your patreon supporters :)

@chrisgriffith1573

3 жыл бұрын

Frankly, I am not in a position to be a "patron" and see no benefit to fans like myself at all. Favoritism based on money is often required, but also is bad for many individuals, being exclusionary in nature.

@SabineHossenfelder

3 жыл бұрын

I am considering it but at the moment I don't have the time. Need to finish my next book.

@sundar6568

3 жыл бұрын

@@chrisgriffith1573 +++

@axl1002

3 жыл бұрын

Try OnlyFans ;)

@PetraKann

3 жыл бұрын

@@SabineHossenfelder Dont be afraid

I've been wondering for a long time if the universe was expanding or if the scale things operated on was shrinking. Nice to see smarter people have also thought of this.

@agimasoschandir

3 жыл бұрын

Lorentz contraction

@steveinkent9843

3 жыл бұрын

You're correct.

I would need a deeper explanation to how we can conclude we're not shrinking. I came up with the idea a couple of years ago, but held it to myself. Just recently I found out I'm not the only one thinking about it.

@robwest5142

Жыл бұрын

That's exactly why I'm here. I've been unable to shake it for 20 years.

@robertsavage8270

Жыл бұрын

look up Hubbles law, it proves the universe is expanding, but into what? think about it, the farther you look into the universe the farther back in time you are seeing. so, the universe must be expanding into the past.

@robertsavage8270

Жыл бұрын

@@robwest5142 look up Hubbles law, it proves the universe is expanding, but into what? think about it, the farther you look into the universe the farther back in time you are seeing. so, the universe must be expanding into the past.

@TheMisterSvensson

Жыл бұрын

@@robertsavage8270 I see no clear contradiction. I would imagine it looking just like that if we shrunk at a faster and faster rate. I guess I need a more concrete description to how the shrinking universe can't be the explanation. I know it sounds like I'm shifting the burden of proof, but I'm not pushing seriously for my view, I'm just curious; is there a clear refutation for the idea? Or maybe I just miss something the Hubble thing explanation.🤷‍♂️ I will look deeper in to it.

@juan_ta

9 ай бұрын

As Sabine said, there is no problem with the idea of us shrinking. It is a matter of choosing an appropriate coordinate system.

Embedding space! Thank you for your clear and concise explanations! Learn so much from this channel as someone that has no background studying this. Your teaching style enables people like me to grasp these complicated concepts. Even when you shrink and sound like a mouse. :)

7:43 🤣 Love this editing, Sabine!

You have a really great channel. Thank you for the lecture. Really quite fascinating.

Hi Sabine! I'm excited to be a new Member here, and to discover more of your work and this excellent video. It fits perfectly with an article presented at an international physics conference this September, clarifying how spacetime curvature explains gravity. I'm hoping the "priority reply to comments" member perk (and the germane answer to a frequently-requested topic) mean you'll see this comment soon and we can have a conversation about it. The core idea is, modern mobile accelerometers provide an excellent way to measure, explain and prove Einstein's spacetime curvature causes gravity. It's kind of perfect -- as you point out, the theory lets you pick the reference coordinate system. We can use the coordinates of the accelerometer sensor, and of course any observer looking at the display of the sensor's Proper Acceleration on an iPhone will see the same value. The accelerometer confirms what Einstein suspected on his famous elevator ride: that objects in free fall near a mass are NOT accelerating, that the apparent pull of terrestrial gravity is a Fictitious Force, and that the surface of the earth accelerates outward at 1 g -- without its radius in meters increasing. For observers on earth's surface, this creates the illusion that nearby free falling objects all accelerate downward at the same rate. The main idea is captured in a simple poster from the conference: (Since I'm not sure how my big poster will render on KZread comments, perhaps you can message me directly via @davidalevitt) I'm happy to share a short article that provides more detail. Here's a link to the conference abstract: indico.cern.ch/event/1229551/contributions/5526956/

You need to correct the part about "R < 2pi R" [sic] at 3:30-both in the VO, and in the graphic.

I have just woken up, and a Sabine video to start my day! Thankyou

@jonathancamp7190

3 жыл бұрын

My Saturdays start with a cup of coffee and Sabine's video.

You are awesome Sabine! 👍☀️

Thank You Sabine for another wonderful discussion on the subject of Space time and it's expansion. It's interesting to note that the Universe may have several extra dimensions other than the four that are utilized to describe Spacetime. Just how many extra dimensions ... who knows !!! 🤔🤔🤔

Thanks for one more of those awesome clips 🙌 👌

So interesting!! My mathematical ability ends at basic algebra. This was one of the most understandable explanations of general relativity I've ever seen. Thank you!!

@KibyNykraft

2 жыл бұрын

Just search for "corrected Einstein's mathematics" or "corrected equations physics Mathis" etc, and you'll see that it's not quite that simple. The more advanced the mathematics, the smarter and more skeptical the mind is needed for keeping focus on what is useful and science mathematics ,and what isn't or only partially or contradictorily is.

@azmard4865

2 жыл бұрын

@@KibyNykraft your comment burns my desire to excel at maths for the sake of understanding nature 😮

@frankdimeglio8216

2 жыл бұрын

Hossenfelder is not a genius.

@mikemondano3624

2 жыл бұрын

Some birds do math more complicated than that, and honeybees solve a problem quickly that humans have not figured out how to solve yet.

@KibyNykraft

2 жыл бұрын

@@mikemondano3624 All natural species except humans have neither superstitions nor mathematics among the purely mind-based activities not having a direct relation to adaptation itself or to scientific plausability. That should give us a hint that nature is physical and not divine and mathematical

To be honest, I am expanding. You just robbed me of my favorite explanation for it.

It is both impressive and daunting to listen to someone as smart as Sabine speak about the theories of someone who is *possibly* even smarter. Helpful, but still hard for an average mind to fully appreciate.

I have thoroughly enjoyed your talks, not only on physics, but also philosophy. While in college in the early 1970's at LSU, I was fortunate to meet Dr. William Hamilton and Dr. David Blair to assist in a small way on what became known as Allegro, a forerunner of LIGO. Whenever I think about the universe expanding, I wonder, could it be expanding because it is rotating? (Centrifugal force?) If so, I can imagine children playing Snap the Whip... gravity holding on until overcome by centrifugal force and the universe flies apart. Is there a rotational component to the model of the entire universe?

@3opaH

Жыл бұрын

In that case, wouldn't the universe expand in just one direction- perpendicular to the axis of rotation?

@markfabre7682

Жыл бұрын

@@3opaH If rotated in 3-dimensional space that would be true, but in 4-dimensional spacetime?

A video explaining what happened before the beginning would be great!

this video shows why time is relative, although it says that is barely 11 minutes long, it feels like a 2 hours magistral class. Awesome job

I love listening to you explain things,also I love the way you pronounce “Einstein “ awesome

@edholohan

2 жыл бұрын

EYE IN SCHTEIN

@moonzestate

2 жыл бұрын

What's so awesome with her pronunciation of Einstein? I see this comment a lot. The whole Europe pronounce it in the same way as she does. Are you from USA?

@zombiebiker5581

2 жыл бұрын

@@moonzestate Hello there, no I'm English, I just like the way she says it, it's my opinion and if you see this comment a lot obviously people like the way she says it, what is wrong with that? And the whole of Europe don't pronounce it this way, I work with up to 500 people from everywhere and a lot from Europe. And I do like the way she pronounces Einstein, but that's just me, just cheers me up. I love different accents and the way people talk. Hope that explains it and no offence given or taken.

@zombiebiker5581

2 жыл бұрын

@@moonzestate No problems, I find little things in life make me smile, and a little friendly debating is good. Have a happy ,stress free day.

@moonzestate

2 жыл бұрын

@@zombiebiker5581 My bad, I meant the majority of non-English speaking people in Europe pronounce it "ine - shtine". In my experience, only the American and British pronunciation of Einstein is "stine" instead of "SHtine". All Slavic languages pronounce it like Germans originally do. The same goes for French, Italian, Dutch, Greek, Hungarian, etc.

I like the idea were are shrinking instead. It made me think of a video on how high energy particles traveling at the speed of light could travel deeper into the atmosphere than their life time should allow as they should decay in a curtain amount of time and when you look at the speed of light that only allows for a curtain distance but they were traveling much further. The solution was that when traveling at the speed of light from the particles perspective since time was moving slower the distance to the destination got shorter. This means in turn if you were traveling at light speed and slowed down it would seem like your destination was starting to get further away. Since time and space are relative this example of high energy particles would seem to indicate that to a curtain extent distance is relative too. I know there are some flaws with the perspective of the universe seems like it appears to be expanding because we are slowing down after the big bang but it is an interest change of perspective.

Her explanation of "It doesn't expand into anything" sounds much more like, "The answer to that question is beyond our capacity to observe, and so is unknowable."

@PrivateSi

2 жыл бұрын

To be pedantic, the problem is Sabine kind of asserted the universe does not expand into anything. A multiverse may be far from definite reality, and impossible to confirm but that also means its impossible to deny. Also, the idea of matter shrinking was a bit of straw man on the 'shrinking universe' denial assertion front. It is possible everything is being pulled inwards, with objects nearer The Greatest Attractor, further away from us, moving away faster. Laterally matter would be pulled into filaments that form blobs that form galaxy clusters... The Big Suck!

@alphagt62

2 жыл бұрын

This is so, there are a great many things that are beyond a human’s ability to know. But this subject about our universe, is deeper than just saying it expands into nothing. Space is more than nothing, it is a field of tensors, magnetic fields, the Higgs field, gravitational fields, dark energy, etc. all of these fields are what make up space. This creates the 4 dimensions we enjoy. Outside of our universe, these fields do not exist, and therefore, there are no dimensions. And you simply cannot go where there are no dimensions. She did mention that if there are 10 dimensions, then perhaps our 4 dimensions are inside of that. But, there is zero evidence to support that theory. It happens to be one of those things that humans will never know.

@calguy3838

2 жыл бұрын

@@PrivateSi "To be pedantic, the problem is Sabine kind of asserted the universe does not expand into anything." Exactly. Unless I misunderstood (which is very possible), I think, based on her explanation, it's more intellectually honest to summarize by saying "We don't know and cannot know what, if anything, it expands into."

@Neoplasie1900

2 жыл бұрын

@@calguy3838 You might want to call it "Outside the realm of natural sciences" as that is what it is. For a scientifically minded person, these two statements are more or less equivalent. As I understood the argument it is more about delinking to fact of an expanding universe from the assumption that there necessarily is something to expand into. And so it is reasonable to assume - based on our current understanding - that the universe expands "into nothing" instead of "into something". Ultimately though, it's nothing we can answer using natural sciences and we probably never will.

@calguy3838

2 жыл бұрын

@@Neoplasie1900 I think people like me, who do not have a deep background in science, have difficulty conceptualizing space as a "thing."

Thank you for the deep insight. Initialized my thoughts about the surrounding space again. I only knew Max Born before. Now I have to read it again. Thanks.

@jgrab1

Жыл бұрын

Will that make it Born again? ;-D

One question I still have: Does this universe expansion generate a "force". So while its true that are particles are not expanding apart due to gravity (or other forces), are those forces being countered by the expansion somewhat, leading to a weaker overall attraction between the particles? Also, as the universe's expansion continues to increase in rate, is the "force" of the expansion increasing as well?

@jonka1

Жыл бұрын

I'm not qualified to give a proper a proper answer to you but I suspect that nothing is affected by the moving apart of discrete and self contained systems. I like your last question about increasing rate. My mind has been inclined to suspect that the increasing rate of expansion MIGHT be explained by a high rate of spin of this entire universe. I have asked several youtubers for their opinions but so far have had zero response.

@everythingisalllies2141

Жыл бұрын

the belief that the universe is expanding is pseudoscience. a BS claim. It's not expanding anywhere. The other nonsense claims are from Einstein and for the quackery called Quantum.

Thank you for this little nugget of wisdom 😊

Outstanding video! This is easily the most definitive, & concise explanations of these questions on KZread without getting too lost in the math. Thank you

@frankdimeglio8216

2 жыл бұрын

Hossenfelder is not a genius. She is political. THE ULTIMATE AND TRUE MATHEMATICAL UNIFICATION AND BALANCING REGARDING PHYSICS/PHYSICAL EXPERIENCE IS CLEARLY PROVEN, AS E=MC2 IS F=MA: Time DILATION ULTIMATELY proves that electromagnetism/ENERGY IS GRAVITY, as E=mc2 IS F=ma. Therefore, this NECESSARILY represents, INVOLVES, AND DESCRIBES what is possible/potential AND actual IN BALANCE. Gravity is ELECTROMAGNETISM/energy. BALANCE and completeness go hand in hand. "Mass"/ENERGY IS GRAVITY. ELECTROMAGNETISM/energy is gravity. The Earth/ground is understood as comprising the FULL DISTANCE in/of SPACE, AS E=mc2 IS F=ma. Time DILATION ULTIMATELY proves that electromagnetism/ENERGY IS GRAVITY. This NECESSARILY represents, INVOLVES, AND DESCRIBES what is possible/potential AND actual IN BALANCE. The stars AND PLANETS are POINTS in the night sky. Gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites, as ELECTROMAGNETISM/energy is gravity. So, E=mc2 IS F=ma. Overlay what is THE EYE in BALANCED RELATION to/with what is the Earth. (LOOK at what is the BLUE SKY. The Earth is ALSO BLUE.) Now, notice the black space of what is THE EYE. GREAT !!! Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE, AS ELECTROMAGNETISM/energy is gravity; AS E=mc2 IS F=ma. "Mass"/ENERGY IS GRAVITY. ELECTROMAGNETISM/energy is gravity. The Earth/ground is ALSO E=mc2 AND F=ma. The stars AND PLANETS are POINTS in the night sky. Overlay what is THE EYE in BALANCED RELATION to/WITH what is the Earth. (Notice the black space of what is THE EYE.) NOW, A PHOTON may be placed at the center of what is THE SUN (as A POINT, of course); AS the reduction of SPACE is offset by (or BALANCED with) the speed of light; AS ELECTROMAGNETISM/energy is gravity. Great. Notice that THE EARTH is ALSO BLUE. LOOK up at what is the BLUE SKY. Excellent. Truly and ultimately, TIME is NECESSARILY possible/potential AND actual IN BALANCE; AS E=mc2 IS F=ma, AS ELECTROMAGNETISM/energy is gravity. The DOME of a person's EYE is ALSO visible. Great !!!!! I have proven why people are not visible on what is observed to be the Earth as it is SEEN from outer "space". E=mc2 IS F=ma. Very importantly, outer "space" involves full inertia; AND it is fully invisible AND black. INSTANTANEITY is FUNDAMENTAL to what is the FULL and proper understanding of physics/physical experience, as E=mc2 IS F=ma. Indeed, gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites; AS ELECTROMAGNETISM/energy is gravity; AS E=mc2 IS F=ma !!! THEREFORE, objects fall at the SAME RATE (neglecting air resistance, of course); AS ELECTROMAGNETISM/energy is gravity. Gravity IS ELECTROMAGNETISM/energy. Energy has/involves GRAVITY, AND ENERGY has/involves inertia/INERTIAL RESISTANCE. Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE, AS E=mc2 IS F=ma. Accordingly, the rotation of WHAT IS THE MOON matches it's revolution. Great !!! THE SUN is E=mc2 AND F=ma. Again, time DILATION ULTIMATELY proves ON BALANCE that E=mc2 IS F=ma; AS ELECTROMAGNETISM/energy is gravity. THE EARTH/GROUND and WHAT IS THE MOON are both demonstrative of (and subject to) the fact that E=mc2 IS F=ma. Beautiful. BALANCE and completeness go hand in hand. SO, a given PLANET (INCLUDING WHAT IS THE EARTH) sweeps out equal areas in equal times; and this is THEN consistent WITH E=mc2, F=ma, AND what is perpetual motion; as ELECTROMAGNETISM/energy is gravity. Great. Gravity is ELECTROMAGNETISM/energy. E=mc2 IS F=ma. SO, THE EARTH/ground is a linked AND BALANCED opposite in relation to what is THE SUN. It therefore represents and comprises what is the FULL DISTANCE in/of SPACE in a BALANCED fashion, as E=mc2 IS F=ma. Therefore, time DILATION ULTIMATELY proves (ON BALANCE) that E=mc2 IS F=ma; as ELECTROMAGNETISM/energy is gravity. Great. SO, this NECESSARILY represents, INVOLVES, AND DESCRIBES what is possible/potential AND actual IN BALANCE. Great !!! Gravity IS ELECTROMAGNETISM/energy, AS E=mc2 IS F=ma. The stars AND PLANETS are POINTS in the night sky. LOOK down at what constitutes the EARTH/ground. Again, E=mc2 IS F=ma. SO, the INTEGRATED EXTENSIVENESS of thought (AND description) is, in fact, improved in the truly superior mind. Stellar clustering ALSO proves that electromagnetism/ENERGY IS GRAVITY, AS E=mc2 IS F=ma. Very carefully consider what is a galaxy. By Frank DiMeglio

I just discovered your channel, and I was very happy to do so! Your explanations are wonderful! I look forward to watching many others of your videos. I have a question regarding space. :) Some physicist claim that there is eternal inflation, and posit a multitude of universes, much like bubbles in a giant sea. So, how does that fit with your explanation of space/time? Are all of these in space/time? My memory is vague, but I seem to remember Stephen Hawking saying that space/time began with the Big Bang. If so, then is the space where these other universes might be part of the 11 dimensional space that you mention?

@Feliscatis

2 жыл бұрын

If we say that there will be multiverses they all have their own space time and will if the physics is like ours, expand into nothing. Spacetime is the room inside of an universe. And all of these universes had their own big bang or beginning or what else

@andrewtime2994

2 жыл бұрын

Using the word "universe" refers to all that we can perceive. Suppose we could go into a black hole and come out somewhere else, it would not be another universe, it would just be more universe. If we could measure the eleven hypothetical dimensions, they would still be part of our universe. If there are other universes, we would never know, because by definition they would be something that we cannot perceive. We can theorize about it all we want, though.

I could listen to you lecture for hours.

Great video, nice and straightforward

This video is accurate. Thank you for clarifying for the audience, bravo!

@guymann4016

2 жыл бұрын

Well, thank you for confirming.

For an explanation by a gravitationally bound entity, this was relatively good.

Yes, we do expand-my stomach is testament to this theory, thank you Sabine for years of going over my head! ❤

2:45 Just a diagram correction: The bottom line (curve) should be drawn only upto the centre of the figure starting from left (or right).

is bare space quantifiable? Can we measure that kind of thing? Curious, if the universe is expanding, does this mean that there is new space coming into existence, or would the quanta of space be spreading apart?

@stargazer7644

Жыл бұрын

Considering how redshift works, I tend to look at it as if new space is being created everywhere constantly.

I've been searching for three decades to understand general relativity. And must continue the search.

@DrDeuteron

3 жыл бұрын

what's the hold up?

@ResurrectingJiriki

3 жыл бұрын

You're not supposed to understand. Likely Sabine doesn't understand either It's a non sensical theory to 'distract' you from a real theory, real science and real understanding. If everyone knew how Stonehenge worked, the druids could not use their knowledge to 'influence' (manipulate) the people around them. Also, you might find out that the sun is not some hydrogen bomb going off in space but an electric phenomena which could lead you 'back' to catastrophism which would make you see the impending 'next end of the world'

@BigManUndead

3 жыл бұрын

@@ResurrectingJiriki What on this objectively spherical Earth are you talking about bud?

@ResurrectingJiriki

3 жыл бұрын

@@BigManUndead What was not clear? It seemed to me that what I said is pretty straightforward? Unlike Einsteins' theories

@BigManUndead

3 жыл бұрын

@@ResurrectingJiriki "the sun is not some hydrogen bomb going off in space but an electric phenomena which could lead you 'back' to catastrophism which would make you see the impending 'next end of the world'" This part was not clear

Thank You! Very illuminating. Even in the future!

Preface: I only have a very basic level of education in physics, so I have a couple questions. 1) What does it mean for the universe to expand? For example, filling a balloon with water will cause it to expand, increasing the volume and surface area. However, since we can't see the entire universe, I'd think we couldn't know that it was expanding, which leads me to my next question. 2) How do we know the universe is expanding? As you said, we can see that the space between galaxies is expanding, but I don't understand why that means the entire universe is expanding. Using the water balloon example, let's say that two pebbles of differing sizes are also inside of it. If we shake up the balloon, the pebbles will probably move around, possibly away from each other, but the balloon itself isn't expanding, since the surface area remains constant. I'd think there could be any number of reasons why two galaxies would be moving away from each other, besides the universe itself is expanding. Thanks. I enjoy your videos.

"When you move forward in time, you move sidewards in space. That's just weird. And that's why we don't use that" lol

@fjames208

2 жыл бұрын

Lol true

@lrimunlmorin7947

2 жыл бұрын

But it's true though ,aren't we always moving?

@Rising_Pho3nix_23

2 жыл бұрын

@@lrimunlmorin7947 we are moving forward in time, yes. At least in our local understanding of time

@JivanPal

2 жыл бұрын

@@lrimunlmorin7947 yes, it's true depending on your frame of reference, but as mentioned, the particular frame of reference you choose to work in doesn't matter when it comes to what the theory predicts, so we just choose to use the frame of reference that's most convenient to work with.

I wish my brain could expand so I can understand this.

@brendawilliams8062

3 жыл бұрын

Me too. Like from 101128 to 1011279. My journey for the maze takes more road trips than the ancient American Indians.

@sonjak8265

3 жыл бұрын

You are not missing anything. Pure rubbish created by people whose livelihood depends on making up things they do not know much about.

@brendawilliams8062

3 жыл бұрын

Seems that between 123... and. 375. And27. Is a fingerbalm. No

@brendawilliams8062

3 жыл бұрын

@@greggoog7559 I have a hobby. It is fun

@larrybeckham6652

3 жыл бұрын

It will. This disorientation you feel as you struggle to understand it is your brain forming new connection and even growing new neurons. Unfortunately this expansion does not accelerate at human time scales.

I enjoy listening to Sabine even though I am clueless.

Sabine, what is your perspective on Halton Arp's challenge to traditional redshift interpretation? Do you think it affects the whole idea of expansion/contraction?

@DinoAlberini

2 жыл бұрын

It’s like asking a geographer about his perspective on the flat earth.

"I figured maybe people just don't understand... so let me make it really simple... Imagine you're an ant, crawling on a sphere, measuring angles...." and... I'm lost.

@agimasoschandir

3 жыл бұрын

The ant only travels on the surface, which can go forward or backward on the surface, left or right, but not up and down. In effect, it is a flatlander or 2D creature, but with a 3D body. Restricting its exploration space to the surface of the sphere which, let's say the sphere was large enough that the curvature wasn't obvious to the ant, how would this (also intelligent) ant determine that indeed it was a sphere? By measuring the angles traced on that surface

@homer_nods

3 жыл бұрын

The ant is a bright ant and attended most of her spherical trigonometry lectures 😉

@nicholasandrzejkiewicz

3 жыл бұрын

Are you lost or are you just tuning out?

You're the only KZread host who knows how to pronounce Einstein's name correctly :-D

@cobaltno51

3 жыл бұрын

it was almost jarring to hear the corroect pronounciation :D

@bangbangthatawefulsound3396

3 жыл бұрын

her name suggests that she is from germany, or she knows because she works in frankfurt am main/germany ...

@FlushGorgon

2 жыл бұрын

Too bad she can't pronounce anything else correctly.

@johngavin1175

2 жыл бұрын

@@FlushGorgon Your hearing must be off.

Thank you. Highly enjoyable.

Please share these brief videos with others. Thanks!

I'd like to see her do one about Einstein's theory that time is money.

@joansparky4439

2 жыл бұрын

not any time, 'life time worked for others' is money.

When I hear of an interpretation that "doesn't make physical sense", I immediately like it. It's so consistent with quantum physics that it must be true. ;)

@sngscratcher5231

2 жыл бұрын

Agreed. I think it doesn't make physical sense because the material universe isn't actually physical. It's something else that we're only just beginning to understand. "Everything we call real is made of things that cannot be regarded as real." ~ Niels Bohr.

@ralphclark

2 жыл бұрын

I'm afraid that doesn't work as a filter for deciding what's true. It's equivalent to saying that you just can't know anything.

@okrasmugglers1635

2 жыл бұрын

@@sngscratcher5231 That is the elemental duality of the corporeal and the physical, where "physical" is somewhat akin to the metaphorical world of poetical language, using the wholly unreal language of mathematical constructs.

Someone other than PBS Space Time that I can listen to about these sorts of things. Have another sub.

Thanks Sabine. You explained this really well, although I am still personally skeptical. I do enjoy your presentations :)

I like to listen to Sabine whenever I think I’m getting too smart.

7:44 LOL! Oh that was a great one!(or should I say a diminutive one?)

@CAThompson

3 жыл бұрын

@@buddysnackit1758 What

You do a great job with many KZreadrs like you. Maybe together we will discover something.

Thought provoking as always

You missed your classic "That's what we'll talk about today" :-D

@SabineHossenfelder

3 жыл бұрын

Back next week. With a new haircut!

@MadDog-tp4rx

3 жыл бұрын

@@SabineHossenfelder New haircut? You know, if your hairdresser screws up, he'll be a goner! ;)

@homer_nods

3 жыл бұрын

@@SabineHossenfelder enjoy 😊

7:42 I nearly spat out my coffee. HAHAAHA!

Some questions: If the universe is expanding, does that mean the universe is a "thing" separate from "stuff" (matter, photons, dark energy, etc.)? Also, if the space between galaxies is expanding, but the space between chucks of matter in, for example, our solar system is not expanding, does that mean the rate of expansion will be higher at the mid-point between galaxies? In other words, does the rate of expansion vary relative to the distance from matter? Finally, could it be that "space" grows or multiplies (like cell division in biology) and that matter (gravity and other forces) inhibits this growth of space?

Beautifully said.

You mean the *circumference* of the circle will be less than 2pi R...yes? In other words, because the radius line inscribes a geodesic arc, that makes it longer...?

@SabineHossenfelder

3 жыл бұрын

Yes, sorry. The is an "R" too much in the illustration. I added a note on this in the info.

@thelonious-dx9vi

3 жыл бұрын

Thanks Sabine. I didn't mean to nitpick. Just trying to understand. Cheers.

@jasongann8535

3 жыл бұрын

@@SabineHossenfelder fake account

I can never get enough of Einsjtein.

It does make sense to say we shrink if we view ourselves from an outside perspective going towards a singularity inside an event horizon. At that point we shrink, as does all, time slows so singularity is never reached and the person outside the event horizon sees you moving forward in space yet you see this as moving forward in time explaining why we can not go back in time. It would also help explain large number hypothesis as protons would become pretty much holographic projections of energies at the EH of the outside universe. An EH we see as MBR... Such a coord system likely does away with need for Dark Energy, and likely due to conservation of momentum does away with the need for Dark matter. I have spent over a decade now trying to figure a way to convince myself we are not shrinking and the more I try, the more I kinda think we are :(

This is best explanation of general relativity i ever heard 🤩🤩

It expands into the future what's outside doesn't exist until we get there.

@Bananskuden

2 жыл бұрын

That's a much better answer than the video's!

@Kyrelel

2 жыл бұрын

@@Bananskuden It's also wrong ;p

@little8660

2 жыл бұрын

@@Kyrelel Douple slit delux has shown us that physical reality doesn't form unless the field of consciousness is there to witness it. Reality doesn't assemble until we are there to witness it.

@Bananskuden

2 жыл бұрын

@@Kyrelel Is there degrees to wrongness?

@jojones4685

2 жыл бұрын

@@little8660 simply untrue

OMG, where has this women been all my life. I would love more than anything to sit down and have a conversation with her.

Your amazing Sabine

Brilliant Sabine! Even being in the community of Physical Chemists, amazing to listen you on all related to Quantum mechanics!