This channel is a goldmine for abstract knowledge.
@jodscience3741
3 жыл бұрын
There is a difference between abstract knowledge and abstract nonsense
@edwardjcoad
3 жыл бұрын
I would argue that this is the complete opposite of abstract....whatever that maybe.
@KnufWons
3 жыл бұрын
@@edwardjcoad many use “concrete” as the opposite of abstract
@radwizard
3 жыл бұрын
You should check out the other videos that have non-abstract knowledge. You quickly learn it is an amazing channel for a survey and quick review of real concepts we use in physics.
@IrelandVonVicious
3 жыл бұрын
It's a gold mine for unicorn farts. It's all made up, no evidence and wrong.
@Phillip-ey3dp
Жыл бұрын
I am 60 years old and I was able to enroll in any university in my country as an engineer. However, at the time, I didn't think I was smart enough to understand the math and physics needed to complete the degree, so I chose to become a Technician instead. After watching three of your videos, you have helped me to remember some of the math concepts I learned 40 years ago. If I had a teacher with even half your ability in high school, I would have pursued a degree in engineering. Your ability to explain complex concepts using only high school math is truly remarkable.
@d.3578
Жыл бұрын
@@Bopplesyou can do it!!! wishing you lots of success 🫶
@samheard7849
Жыл бұрын
@@BopplesI hope you are successful! Praying for you!
@AA-gl1dr
Жыл бұрын
@@BopplesI believe in you. You’re never too old to change the world. Keep going you’re doing great!!
@brownj2
4 ай бұрын
But how did you know you would not have a good teacher, if you went on to study this in college?
@WilliamDye-willdye
3 жыл бұрын
I love that the audience here carefully scrutinizes each video for errors. It's basically peer review, complete with occasional re-uploads. It's a shame we lose all the comments on the original video. Sometimes people put a lot of time into comments, but re-uploads are still the right thing to do.
@alanzyoutube
3 жыл бұрын
I noticed the original video had been deleted before I could watch it, what happened?
@WilliamDye-willdye
3 жыл бұрын
@@alanzyoutube Enough errors were found that the author decided to issue a corrected version. Unfortunately KZitem currently does not allow revisions, just overlays or re-uploads.
@tim40gabby25
3 жыл бұрын
Any developers out there, as a 'comnent capture' app has a role, allowing the reporter to 'pin' them as a group so they are not lost - and a lot of thought goes into some comments. Just a thought from an old uk duffer :)
@WilliamDye-willdye
3 жыл бұрын
@@tim40gabby25 A quick search turned up an existing commercial service (exportcomments dot com), and there may already be open source code available. Despite being a programmer, I usually just take a screenshot of my comments, and shrug off the times when things are lost.
@tim40gabby25
3 жыл бұрын
@@WilliamDye-willdye Thankyou. It's so hard to have a novel thought these days. How lovely for you to take the time to let me know :)
@kendallknight3249
3 жыл бұрын
I've always wondered how all this stuff was connected and how people came up with these relations. Please keep it up
@PhysicsExplainedVideos
3 жыл бұрын
Cheers, will do
@20IA
3 жыл бұрын
Hello its only 4 comments but what went wrong here
@jameszhang9326
3 жыл бұрын
By delving into physics mode of thinking and extreme applied math. 😅😅
@hOREP245
3 жыл бұрын
@@frankdimeglio8216 this crank has been posting for 12 years apparently. I found some old posts on FQXi where he's saying the exact same things lol.
@bloodjunkie1919
2 жыл бұрын
@@frankdimeglio8216 how about going to a scientific body with this information (formatted in a way that doesn't hurt to look at, that is)
@adberg1067
2 жыл бұрын
The fact that you made a video in which you explained this all using physics that a 17 year old school student was able to understand (me) is astounding keep it up!
@justingreen2432
Жыл бұрын
You are one of the few smart 17 year Olds! Don't forgot it!
@rc5989
3 жыл бұрын
The video is improved, the graphic representation of Hawking radiation is removed, which was used by Hawking himself but was ultimately just incorrect. Such a good video! This subject is popular with more sophisticated physics learners, but ultimately purely mathematical and not intuitive and our “mental picture” of what we think is happening is unlikely to be real. All my opinions, of course.
@timbeaton5045
3 жыл бұрын
Yep. What is interesting is that, as he says, we can do these calculations with nothing more (OK, with some measured actual physical quantities thrown in) than dimensional analysis. i.e without proposing an actual mechanism for the process of Hawking radiation. And yes, the "Virtual particle pair separation" model is wrong, insofar as it is NOT the mechanism that Hawking proposed, but has been used, somewhat inaccurately to describe the process (even by Hawking himself, i believe?) as a sort of "easier" explanation than the full reasoning behind his prediction. Would be good to see a video here on the actual mechanism proposed by Hawking. PBS Space time have done a good basic video on this, but would love to see a more detailed mathematical look, here on this excellent channel. Over to Physics Explained?? 😉
@jimwinchester339
3 жыл бұрын
Sometimes an imperfect diagram is still the key to the first-time hearer "getting" it.
@Number6_
2 жыл бұрын
@R C So how many of you are there in your mental picture of your self? I take it you all live in fascist mental state.
@chimkim
Жыл бұрын
@@jimwinchester339yeah, if they tried to teach fifth graders about atoms its a lot easier to think of electrons as tiny balls even if that's not *really* what they are
@Gizzeit
8 ай бұрын
@@chimkim My second-grade daughter actually IS learning atom structure at school. Yes, protons and neutrons are abstract "balls", and I don't know how electron clouds are explained in their books - thankfully they mostly study without parental intervention ;) (sure sometimes help is needed, and I'm not abandoning my child, just saying she does good on her own most of the time) Ukraine.
@jadegrace1312
3 жыл бұрын
After watching this, I don't get how anyone could find anything more beautiful than physics.
@PhysicsExplainedVideos
3 жыл бұрын
Couldn't agree more!
@bryan3dguitar
2 ай бұрын
So, you don't think that life is more beautiful (and probably really unlikely, but obviously true) than burning balls of gas and rocks flying thru space?
@ibanix2
3 жыл бұрын
Loving these videos, as an undergrad physics major. Keep it up. I also firmly agree with your assessment of dimensional analysis. On my last exam (Modern Physics), I used it to show the professor wrote the question wrong. Whole class got to skip that problem :-)
@PhysicsExplainedVideos
3 жыл бұрын
Glad you like them! And thanks for taking the time to leave a comment.
@devincarlson8866
3 жыл бұрын
These videos are absolutely incredible. I don’t know how you’ve been able to churn them out so fast and consistently without any drop in production value or content quality. Keep them coming! My new favorite physics channel!!
@PhysicsExplainedVideos
3 жыл бұрын
Glad you like them! Cheers for the feedback, much appreciated
@masternobody1896
3 жыл бұрын
@@PhysicsExplainedVideos what is dark matter and plank scale
@masternobody1896
3 жыл бұрын
@@PhysicsExplainedVideos is it possible to go smaller then plank scale
@obst3085
3 жыл бұрын
@@masternobody1896 I think he has a video mentioning that it just doesn't make sense in the term of "physics" to go smaller. Technically nothing prevents it, but there's no value to be gained from anything smaller
@twt2718
3 жыл бұрын
@Sean g 137 coo-coo 🤪
@JoimFormula
2 жыл бұрын
Like this content very much! Add one, Sir.. ;) 1. Include c, when things are fast 2. Include G, when things are massive 3. Include h, when things are quantum 4. Include k, when things are hot 5. Include pi, when things are spherical/circular Thanks for the nice sharing..
@RizkyMaulanaNugraha
2 жыл бұрын
Pi is a dimensionless unit, so it is difficult to include it in dimensional analysis. Or, you can define an angular unit called radians, so you can include it in the analysis. However, most physical observables doesn’t include radians, so you can’t assign dimension on it. Unless you know it is related with angles. For example, angular kinetic energy has the same dimensions like a translational kinetic energy. It’s just that the radian unit is hidden. This is because a radian unit is a constant produced by geometric proportionality between an arc-length divided by a straight length.
@ddognine
2 жыл бұрын
@@RizkyMaulanaNugraha I was going to say the same thing. How would one even know where pi shows up? The numerator? The denominator? Square-root? Cubed? Could literally be anything given it is dimensionless.
@junkmail4613
3 жыл бұрын
72, Retired Electrical Engineer, Remembered "Dimensional Analysis" for some of the practical engineering calculations, (as a checking system) and remember professors alluding that it was potentially a powerful tool, (and to maybe study up on it after graduation), BUT now I see, Doing simultaneous equations on the exponents of the various dimensions involved! I'm now just stunned! I just subbed. (Mind blown) no recovery insight. I just need MORE!!! I see at this moment there are 17 videos, having accumulated 3.6 million views Wow. QUALITY WORK!!! There are some special YT's I enjoy following, and so have a pretty full schedule, but I'm just going to have to nestle yours in among the others. I am going to SAVOR yours like a sweet dessert after a fine meal. Thanks for your great efforts!!!
@danimyte3021
2 жыл бұрын
Here's a fun historical fact about dimensional analysis. Back in 1945, USA did it's first test explosion of an atomic bomb. They then released some pictures of the explosion together with the time they were taken at. Using only these photos, the British physicist T. B. Taylor, managed to pretty accurately estimate the power released by the explosion using dimensional analysis. The power of the explosion was at the time a governmental secret.
@narfwhals7843
3 жыл бұрын
"a topic which I hope to return to in a future video" is a much better shortcut than the unclear pair creation. And it gives us something to look forward to! Good work.
@farhadmodaresi4182
3 жыл бұрын
He is better than feynman
@PhysicsExplainedVideos
3 жыл бұрын
Cheers!
@Joeleon2
3 жыл бұрын
It’s incredible how I’ve learned a lot of what was mentioned here, dimensional analysis, equations of gravity and energy, thermodynamics and enthalpy/entropy, and all of it I was half asleep for. Now I’m presented with a 40min video using it and willingly watch, crazy how different it is learning for a class against learning for yourself.
@hugonelsson9114
3 жыл бұрын
About to start physics at college this fall. I hope the lectures are even half as interesting as these videos.
@PhysicsExplainedVideos
3 жыл бұрын
Good luck at uni!
@hugonelsson9114
3 жыл бұрын
@@PhysicsExplainedVideos thank you!
@KizaruB
3 жыл бұрын
I’m in physics rn. It’s way more vapid than this so far ☹️
@chemicalnamesargon
29 күн бұрын
@@hugonelsson9114 how has it been? :)
@littlemissmisses2981
3 жыл бұрын
I’d just like to extend a huge thank you to you for this incredible content. I failed maths gcse 21 years ago, but I am now enrolled at college to retake it, thanks to you. We all learn in different ways, and this channel (despite maths I barely understand) has made these concepts easy for me to understand, and genuinely curious to see how far I can now push myself with mathematics. When people ask me why (because I don’t technically ‘need’ it for any reason), I reply with “my brain is hungry”. :)
@PhysicsExplainedVideos
3 жыл бұрын
Very glad to hear it! Thanks for the kind words :-)
@andredavis4657
3 жыл бұрын
Yet another brilliant presentation. It reminds me of what I thought was a paradox after covering general relativity (and touching on black holes) in 1973 as a first year undergraduate. The reasoning was as follows : As black holes do not radiate, their temperature must be very low. As matter from a very hot accretion disk falls into the back hole it must heat up to very high temperatures. So I wondered what is the temperature of a black hole. As I was a lazy student I went no further but I later thought that the resolution of my quandary might lie in considering entropy, but never bothered going any further. Thank you so much for answering my 50 year old question.
@VintageTechFan
2 жыл бұрын
Just found this channel, and I am amazed. Explaining stuff I heard off but never totally got due to complicated explainations in a extremely clear way.
@varunahlawat9013
Жыл бұрын
Man you've no idea what you've inspired in me. I haven't slept during night for two days now, just this video. I followed along every second again and again and again until I absolutely get it. My love for physics just increased many folds. Please upload such beautiful lectures. I cannot wait to learn the depths of Physics through this channel!
@tylerdavis3
Жыл бұрын
Were you manic or are you on something lmao
@jannegrey593
3 жыл бұрын
While I saw it yesterday (and there were few errors - minor ones, like 15360/3 being 5210 - unless I missed something or mistaken) - I'll gladly watch it again. I just don't know which mistake was so big that you had to re-upload. Regardless - thank you again. Keep making these - they are fantastic videos that look more in-depth than most channels. And while I trip up on mathematics sometimes - well it encourages me to remind myself of how to use it (I'm a person that last time used calculus 15 years ago and almost never professionally). As your catchphrase says: NEXT! ;)
@PhysicsExplainedVideos
3 жыл бұрын
Cheers for the kind words, much appreciated
@jannegrey593
3 жыл бұрын
@@PhysicsExplainedVideos No problem - it is a pleasure to watch your videos. I hope that in the future (doing it now probably lacks enough foundation in QFT and QED) you'll release a video on Quantum Chromo Dynamics. On KZitem there are only few videos that deal with this subject - and those are couple minutes long and don't go in-depth. Also do you have a Discord? Regardless - I love your videos - my favorite being the one on Ultraviolet Catastrophe. While I knew the subject relatively well - at least as much as can be by someone who never studied physics but loves it as hobby - I never truly understood the details that led to birth of Quantum Theory - I only knew that it was to counter infinities. Seeing it unfold in Mathematics and "tricks" used to extract this information was crucial for me to finally begin to understand the subject. I'm not saying that I understand Quantum Mechanics very well - but I spent couple of hours trying to solve equations that you provided. Which increased my understanding of the subject. Again - Thank You! You're well on your way to becoming the best Physics channel on KZitem when it comes to deep analysis of problems. Something similar to what 3Blue1Brown is for Mathematics - which is a very favorable comparison. Good Luck!
@None-zc5vg
2 жыл бұрын
Dyslexia
@gimmehendrix
3 жыл бұрын
Probably the best explanation of physics on youtube. Keep em coming!
@Evenfiber1068
3 жыл бұрын
Some of the most important results in vector calculus, complex analysis, and differential geometry fall out of Stokes' theorem on manifolds. It's incredible to see the same key insight revolutionize physics in real time.
@kfawell
3 жыл бұрын
There are so many wonderful channels on KZitem. I enjoy them tremendously. And now as for the past several months one of them that I look forward to the most is yours. You cover topics that I already knew something about but I learned so much each time and the presentation style is fantastic and clear and the animation helps so much and the clarity makes me feel some joy. Thank you very much.
@PhysicsExplainedVideos
3 жыл бұрын
Wow, thank you!
@alexandreolle2340
3 жыл бұрын
Thank you for being this long-awaited but high quality link between us, amateur physicists and the beautiful but complex physics we desperatly want to understand :) Outstanding work with crystal clear explanations as always. Keep it up ! And thank you again !
@christopherdevers2836
3 жыл бұрын
These videos unironically made me reenroll in college.
@narfwhals7843
3 жыл бұрын
That is unironically awesome!
@crookedhead3075
3 жыл бұрын
Ha! What a good story!
@greengirl4985
3 жыл бұрын
Wow!! That’s awesome
@aidenstern5254
3 жыл бұрын
Hows college going
@christopherdevers2836
3 жыл бұрын
@@aidenstern5254 Pretty good, I had to retake a few courses that I had dropped - but I'm onto the actual core subjects for a general physics. Grades are keeping up thanks for asking.
@Pooksy
3 жыл бұрын
One of the best channels out there
@pengwei8635
Жыл бұрын
Mind blowing content. Such a standout format among science videos. Never thought that the “complicated math” that gets abstracted away actually makes things easier to understand
@Bundesverfassungsgehirn
3 жыл бұрын
Very underappreciated channel. Hope you get the subscribers you deserve good sir, great videos.
@PhysicsExplainedVideos
3 жыл бұрын
I appreciate that!
@adogonasidecar1262
3 жыл бұрын
22:50 and 23:40 ish. And then 37:50 ish. And of course 41:00. That's where I cycled the most. Listened and thought for at least 10 min. Maybe a minute of recording. Mileage may vary but to me this should have been much slower, and the equation work quite a bit faster. All hail to the ahah moments! Thank you, incredibly fascinating
@mrpyfisher1995
3 жыл бұрын
I don't understand most of the math or physics, but I still enjoy listening/watching your explanations. As a matter of fact, I would say that your channel alone has greatly increased my passion (and of many others) for physics. Thank you so very much, I hope there will be many more videos to come! :D On a separate note, couldn't one say that no information is lost? Assuming that a. the current micro-state of the black hole depends off of all the matter/energy that has entered the black hole & b. all the energy that is radiated away directly depends off of the current micro-state of the black hole, that is to say, the photons direction, amplitude, wavelength, and (I'm not sure if what I'm saying makes sense) the "height" at which the photon finds itself relative to its own amplitude upon leaving event horizon. In such a sense, all the information is conserved, no? Are my premises wrong? Is there a missing premise? Or is my conclusion incorrect? Or all of the above? Well, once again, thank you ;D
@ozzymandius666
3 жыл бұрын
You are correct, in essence. Stephen Hawking made the error of believing that all the matter was crushed into the singularity before be re-radiated, but the fact is, from the POV of anyone outside, it only gets thermalized at the horizon, and is then re-radiated.
@mrpyfisher1995
3 жыл бұрын
@@ozzymandius666 Thanks for the explanation :D
@anmolmehrotra923
3 жыл бұрын
Comment for engagement
@sudokode
Жыл бұрын
What do I do for engrossment? 🤔
@SSMLivingPictures
Жыл бұрын
@@sudokodeForm an unhealthy addiction
@bradley1995
Жыл бұрын
@@SSMLivingPicturesdone, what next?
@SSMLivingPictures
Жыл бұрын
@@bradley1995 Allow Hawkins Radiation to destroy all your relationships, I guess
@davidr.603
Жыл бұрын
Same
@joelmayer1018
3 жыл бұрын
I have just finished all the videos from your channel and know there is a new one :D Amazing work you do, keep it up
@PhysicsExplainedVideos
3 жыл бұрын
Thank you very much!
@chrislp4465
3 жыл бұрын
I Love your Videos they are so well structured and with so much Content keep it up bro
@Anthony-ym6iz
3 жыл бұрын
One of the best videos I have seen on black holes and the only one that actually includes a discussion on the CMB which no one else seems to do! Excellent video, just excellent!
@stevemonkey6666
3 жыл бұрын
I am just starting to watch this video. This is a subject I really want to understand better and having seen all your other videos I'm quite excited. ..
@Richard.Holmquist
3 жыл бұрын
Were you teaching high school, an AP physics student might think he/she had fallen into heaven: finally a teacher who communicates the interconnectedness of not just the ideas, but making it concrete through basic mathematics. The value of dimensional analysis is too seldom taught.
@omegapoint1258
2 жыл бұрын
Saying thank you wouldn’t be enough for this video. If there’s anything more than thank you, I’m giving that to you. Simply immaculate!
@georgelafner8760
3 жыл бұрын
Definitely my favourite physics channel, and I love a lot of physics channels. Thank you for all your work!!
@PhysicsExplainedVideos
3 жыл бұрын
Glad you like them! Thanks for the feedback
@Stirlingsays
3 жыл бұрын
Whenever I get arrogant over my self regard and intelligence, I just watch this channel.
@EMWave
3 жыл бұрын
No doubt, you are the one of great explainer of complicated subjects in simple way. It is always a delight to watch your video. I wish your video never ends. It is like watching suspense movie and you are on edge of your seat.
@katenpp
3 жыл бұрын
Thank you for your incredible work!
@PhysicsExplainedVideos
3 жыл бұрын
Glad you enjoy it!
@generalripper4349
3 жыл бұрын
Excellent video ...Dimensional analysis is such a powerful tool. And paired with thermodynamics, it's fascinating how many problems can be tackled with this approach. I remember it well from my physics education.
@PhysicsExplainedVideos
3 жыл бұрын
Glad you enjoyed it!
@VReinthal95
3 жыл бұрын
Is this a reupload? Didn't I see this yesterday? :D
@supreetsahu1964
3 жыл бұрын
There was one error at 15 minute mark
@SenhorAlien
3 жыл бұрын
This is exactly what I thought as I saw the notification…
@paultheaudaciousbradford6772
3 жыл бұрын
I shouldn’t have teased him about it!
@Peringon
3 жыл бұрын
I have to admit that I don't fully understand everything that's presented here (I'm awful at math), but I just love that this channel exists 💕💕❤️ it's so inspiring ❤️💕💕
@PhysicsExplainedVideos
3 жыл бұрын
Great to hear!
@AashishKumar1
3 жыл бұрын
Always looking forward to videos from this channel.
@PhysicsExplainedVideos
3 жыл бұрын
Glad you like them!
@_..---
3 жыл бұрын
Yay you fixed it, this channel is amazing.
@ProfessorBeautiful
2 жыл бұрын
This answered some questions puzzling me for a long time. Thank you!
@Flacopro40
3 жыл бұрын
Thank you for covering this. This is one of the most interesting and simultaneously one of the most difficult concepts in I've found in physics.
@junkbucket50
3 жыл бұрын
Good video, I'll share it around
@jamessmith2403
3 жыл бұрын
I was really missing your video 😛and thankfully you uploaded a new video 😍😘 Great 😘😘😘🥰Thank you ...
@chimkim
Жыл бұрын
This has quite possibly become my favorite math/physics video on the internet. I learned about buckingham pi not long ago, and seeing how a similar idea can be used is phenomenal.
@timewalker6654
3 жыл бұрын
Finally, a video. Your last 3 videos were awesome.
@timewalker6654
3 жыл бұрын
Actually all of them, but i have only seen last 3.
@PhysicsExplainedVideos
3 жыл бұрын
Glad you like them! Thanks for the feedback
@anishsharma6702
4 ай бұрын
This vid is criminally underrated.
@RizkyMaulanaNugraha
2 жыл бұрын
Great job with the video. Didn’t expect that you will also cover holographic principle. Recently there are also some approach that tries to recover Newtonian gravity using holographic principle as the first principle. Of course it is just a conjecture at the moment because we can’t really test it yet. What I find really interesting is the derivation is backwards. Start by assuming information entropy is preserved, we can “deduce” that we are experiencing gravity because we are receiving “information” from somewhere in the form of physical entropy. Since entropy should always increased, there is no way to consume this information, other than being attracted to the source of the information, which in this case, encoded in the surface area. By simple rules of flux, gravity then will have to be written in the form of inverse square law, simply because the amount of information encoded in the surface diminishes by a factor of inverse square distance from the source.
@wardieleppan8443
2 жыл бұрын
Wow! Brilliant as always. Just love, love, love your videos.
@brendonwest-m1n
3 жыл бұрын
Your work is just so bloody good. Thank you.
@PhysicsExplainedVideos
3 жыл бұрын
Glad you enjoy it!
@randycarstens1100
2 жыл бұрын
Excellent presentation. I followed you to my astonishment!
@kentonevans
3 жыл бұрын
This is excellent stuff! Of course, dim. analysis is rarely used to generate formulae, and they would not constitute a theory by themselves. The only well-known instance of this that I can recall might be Dirac's equation, but even that is probably being presumptuous. Developing an extension of an established theory by adding an idea, guided by instinct, is a more orthodox approach.
@AA-gl1dr
Жыл бұрын
Commenting for the algorithm. Absolutely exceptional. I’m in awe of how wonderfully explained all of this was. Thank you so very much.
@AZ-vy4gl
3 жыл бұрын
I always appreciate videos that make me think. Thank you
@PhysicsExplainedVideos
3 жыл бұрын
Glad to hear that!
@onebronx
2 жыл бұрын
Great video! Note that formula for a BH evaporation rate presented here is valid only for a universe with no CMB. With CMB, the rate will be defined by a temperature difference between BH and CMB at every moment of time, so the formula presented underestimate the time of evaporation (and underestimate size of primordial BHs survived as of now).
@tuananhnguyen8998
3 жыл бұрын
By the time the holographic principle comes up, I move my mouse to the progression bar in hope that the there will be more time left of the video. If this isn't the proof of how good your work, I don't know what is. Thank you for all the hard work to make those amazing contents.
@sayantansaha2264
2 ай бұрын
This man makes you rediscover the thesis of physicists. This is the best method to understand physics and math. Thank you my friend❤❤❤
@martinmiculka3390
3 жыл бұрын
Great video!
@PhysicsExplainedVideos
3 жыл бұрын
Thanks!
@mehdisi9194
3 жыл бұрын
Great and nice video. Thank you so much
@jamesdavison6290
3 жыл бұрын
As you explained earlier, Planck's constant has units of "flux" . . . matter moving across a surface per second. There is a finite amount of information that can be contained within a specific volume, and as objects falling into a black hole are compressed into two-dimensional wavefronts frozen in time with respect to outside observers. If you have not read John Archibald Wheeler's autobiography I hope you will give it a try! I am always looking for ways to make these incredible concepts more accessible to my mind, and your videos are an incredible resource. Yet is is hard for me to imagine black holes releasing information in any coherent form. I don't see microscopic black holes spitting out spacecraft! I also wonder about what the expected density of "mini" black holes might have been in the early universe to give us an idea of how often we should be seeing those large gamma ray events when they finally decay! Also, you mention the amount of energy decaying in a second, but the real signature of a decaying black hole would be very complex. Necessarily it should contain all the stuff that fell into it . . .
@shannonmcdonald7584
6 ай бұрын
3 months ago i could not have followed this. But finally, after 6hrs a day of algebra and physics videos... it makes sense. And now that i get it, wow. Great video.
@soulesswanderer2452
3 жыл бұрын
I love the content, it's interesting yet filled with mathematics, it doesn't "dumb down" the audiences, keep it up :)
@eskmob1960
3 жыл бұрын
This channel is a universe of abstract information
@haneen3731
3 жыл бұрын
This is beautiful, thanks for sharing your knowledge!
@lostson1st
Жыл бұрын
I have a diploma from the University of Technology and I think that the way of presenting complex mathematical and physical analyzes here is brilliant.
@avr8844
3 жыл бұрын
Fantastic videos, thank you. I can't really follow the maths, but you manage to make the subjects understandable regardless.
@elliottdickens1797
3 жыл бұрын
This is incredibly well produced
@WildGamez
3 жыл бұрын
Wow. You are a great teacher and presenter. And obviously very smart.
@nickbarton3191
2 жыл бұрын
Brilliant video. I assume that Hawking wasn't awarded a Nobel prize because his theory wasn't confirmed experimentally? The idea of holographic memory chips with microscopic Black holes with Planck area sized bits is tantalising. When the universe is in the last phase of heat-death, the last remaining Black holes will evaporate the energy of whatever mass is left of them in a fraction of a second. The photons will bounce around for a long long time but finally, after collisions, loose momentum until there is no longer even quantum energy/mass. Photons are mass-less in of themselves so the whole universe will be mass-less? So where did all the energy go assuming a finite universe? It implies that it will never cool to absolute zero, ever. Just have incredibly high entropy with a lot of very lonely protons.
@randymartin5500
3 жыл бұрын
Wonderful mathematical analysis ...better than the layman Nova and Discovery shows and not as complex as 25hr long Lenny Susskind lectures . Thank you so much!
@PhysicsExplainedVideos
3 жыл бұрын
Glad you liked it!
@TheGoodMorty
3 жыл бұрын
These are the exact kind of walkthroughs of the math of advanced physics that I crave. Also you have a very good voice for this stuff, it's seriously like math/physics ASMR
@TheGoodMorty
3 жыл бұрын
Although I don't get "tingles" from even normal ASMR stuff, I just mean it's generally pleasant and relaxing but also engaging cuz I'm learning stuff that interests me
@PhysicsExplainedVideos
3 жыл бұрын
Glad you enjoyed it!
@hughbishopnh
3 жыл бұрын
Thank you. Well explained. Apart from the last bit about information being retained on the event horizon of a black hole. Ever looked at the rim of a wood chipper? Doesn't say Oak 6/15/21. I did find one which had some scratches which in binary said "trust Susskind as far as you can throw Hawking" probably put there by Douglas Adams.
@tiamnik
11 ай бұрын
Wow, very simple and straightforward explanation. First time I trully understood Hawking radiation and Black Hole entropy. The approach is still a kind of phenomenological but truly enlightening!
@phths
2 жыл бұрын
Amazing explanation of dimensional analysis… I wish I watched this before I took fluid mechanics though 😅
@leisulin
2 жыл бұрын
This is about the coolest video I've seen on the physics of black holes!
@leopoldpaulin55
3 жыл бұрын
This chanel is way to underrated.
@MrDaanjanssen
3 жыл бұрын
These things can go quick though. Give it a year and this channel will be BIG
@alexpotzel8853
3 жыл бұрын
This might just be the most informative video about physics ive ever seen. Thanks maaan, rlly learned a lot!
@thisaccountisdead9060
3 жыл бұрын
This was a really great video. Simply a pleasure to watch. I'm not an expert in physics, but I know enough to be sceptical of the holographic principle - having looked into Ads/CFT Correspondence. I'm as sceptical of the 'scale free' aspect of Ads/CFT Correspondence as I am of 'scale free' models of network relations in society being an adequate explanation of the current state things. I'm not one of these people who rejects it as just 'cartesian dualism' - sadly, many people mis-understand dualism.
@mithusengupta408
3 жыл бұрын
@PhysicsExplained This was terrific. I wish if you could make a video dealing with a no-nonsense explanation of the Hawking radiation using the formalism of QFT in curved spacetime.
@PhysicsExplainedVideos
3 жыл бұрын
Cheers for the kind words. I hope to return to a proper explanation of Hawking radiation in a future video
@zeweichu550
3 жыл бұрын
Just based on the title, I will definitely love this video.
@shameemmodu
Жыл бұрын
This is extraordinary, i am doing my bachelor in physics.This is the best explanation I've ever seen with mathematics regarding black hole. It is 3 am, i am watching this.
@paulovitorsilvadealmeida680
3 жыл бұрын
hello i don't speak english very well because i'm brazilian i like your content a lot more i would like to ask you with all the favor and of course if you would make a video about the schrodinger equation
@JC-zw9vs
3 жыл бұрын
Great idea! +1
@radwizard
3 жыл бұрын
Read about this in Leonard Susskind's book "Black Hole Wars". This is by far one of the better Physics channels out there. I have watch a few of them. When my Family and Friends ask me about physics in college, I send them a couple of these videos so they can get a look at the equations and concepts we work with.
@va2601
3 жыл бұрын
Just incredible.
@Slayerzard
2 жыл бұрын
Referring equations as how properties are related to each other really helped me understand what was going on
@MrYukon2010
3 жыл бұрын
Just wondering: can black holes absorp the illusive Dark Matter and more over can there be Dark Matter black holes? Love your approach on physics!
@ozzymandius666
3 жыл бұрын
The inflowing spacetime interpretation of the general theory of relativity implies that they do absorb dark energy, and, since dark energy gravitates just like any other form of energy, if one could achieve a high enough energy density of the stuff, that yes, it would form a BH.
@MrYukon2010
3 жыл бұрын
@@ozzymandius666 Thank you for your quick reply. These answers will undoubtedly lead to more questions on my behalf in due time. Again, thanks a bunch.
@craigfowler7098
2 жыл бұрын
I studied degree in Physics 30 years ago, so able to follow the Maths and Physics. Very interesting stuff.
@iitzfizz
3 жыл бұрын
"We're going to guess.." Ah yes I believe I am familiar with his work
@ivanleon6164
2 жыл бұрын
the part of the planck area blew my mind, awesome!
@ElZafro_
3 жыл бұрын
Am I the only one that noticed similarities between Susskind's description of the holographic principle and generalized Stoke's Theorem? It might be unrelated, but I feel like there is a connection between these ideas.
@anasroumeih3605
3 жыл бұрын
Man I love this channel
@paulovitorsilvadealmeida680
3 жыл бұрын
I managed to get to the video equations analytically
@mjowsey
3 жыл бұрын
Pair production near the event horizon has struck me as an unsatisfying explanation of Hawkin Radiation. But I think that might be an example Dunning-Krugar. Eager for an explanation from this channel!
@ozzymandius666
3 жыл бұрын
In simple terms, it takes energy to curve spacetime. Some of that energy can go into pair creation, and viola! Radiation. In more complex terms, an empty vacuum will seem to be filled with radiation to an accelerated observer, with the temperature of the radiation being proportional to the acceleration, and being in a gravitational field is equivalent to being in an accelerated reference frame. All gravitating objects emit radiation, in fact, not only black holes. Look up "The Classical Vacuum" and Unruh radiation.
@charleslivingston2256
3 жыл бұрын
The beginning of Science Asylum's recent video on Hawking radiation (kzitem.info/news/bejne/06iL3ICiq6iYq4Y) starts with precisely the same objection. It's not Dunning-Krugar in this case.
@farhadmodaresi4182
3 жыл бұрын
Your videos are what keeps me going in life man. Keep it up
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