Did you understand the video? I want to make sure no one is left behind, and improve my writing and explaining where I can.
@csquareeducationals
3 жыл бұрын
Yes the video was just perfect,those animations were just at the cutting edge!
@ehrichweiss
3 жыл бұрын
Olber's Paradox is one of my favorites. I watched another video many, many years ago on the topic and I use its ideas routinely to bait hard-headed young-earth creationists into a science discussion that leads to them accepting that the Big Bang(or one of them anyway) happened billions of years ago.
@caribbeanman3379
3 жыл бұрын
"I want to make sure no one is left behind" > "It's a little too late for that, don't you think?" - Star at the outer edge of our visible universe.
@pingnick
3 жыл бұрын
I certainly feel it is lots of ideas for 10ish minutes which isn’t wrong obviously but Smarter Everyday in particular talks about how this is challenging for KZitem algorithms or whatever as I think I tweeted you... also, as I mentioned for instance on the latest Tibees I have a very unusual mind AND definitely science/math/tech KZitemrs however defined certainly do too I’d argue - one aspect outside of purely technical content is that it is fairly dark/night like of an episode which is appropriate but perhaps overwhelming to many viewers however perceived!? - maybe also even more panning across various skyscapes etc would be drawing viewers in and along with you and the comprehension gaps they may have encouraging them to watch again as happened for instance for myself when I watched this Cool Worlds episode over a year after I first watched it ( m.kzitem.info/news/bejne/w5WK0Xqeo2uemqA ) and was able to connect it in my comprehension (as I wrote about in the comments shortly after you uploaded this to KZitem) in a weird way to this latest offering from you - the goal of Cool Worlds is raising awareness of a laboratory that does exomoon and similar research whereas a more general KZitemr probably is shooting for not necessarily a smash hit very occasionally but more steady interest and learning and so on however perceived... also I’m curious about the rights issues I guess it was fair use the film clips in that Cool Worlds episode and yeah obviously Tom Scott knows the latest hahaha - anyway I certainly liked your latest here and it is definitely an unusual astronomical KZitem and that is excellent and who knows about KZitem metrics and so on - Hollywood studios do focus groups for their largest budget stuff I guess and occasionally even give a broad release to something that doesn’t have extremely positive focus group data however derived - the art and science of show business wow teaching/learning STEM etc is an exciting corner of it and thanks again for this episode in particular!🌌🌌🌌🌌🌌🚀🌈☮️💟🤯🎬
@Anelipot
3 жыл бұрын
Just perfect, science was never my strongest point. Your videos prove however, that the teacher plays a huge role in our understanding! A great teacher like yourself, and the lesson 'hits home'. Thank you so very much.
@simesaid
3 жыл бұрын
"Nothing can travel faster than the speed of light, except for...Nothing, which can travel faster than the speed of light." Brilliant!
@ccgarciab
3 жыл бұрын
This sentence made me feel like I was watching a Vsauce video 😅
@Ozelea
3 жыл бұрын
I am going to use this sentence in my next presentation. which is on Tuesday and the topic is "Cosmos".
@monad_tcp
3 жыл бұрын
That can also be the answer of how something comes out of nothing, you are assuming that it doesn't, that's a rule, and there's no rules, there's nothing, so it just can, therefore 0 becomes 1. (at least this works in homotopy type theory, as a basic axiom to create the rest of the entire mathematics).
@simesaid
3 жыл бұрын
@@Ozelea 🙋🏻♂️Hi Abubaker, you definitely should! You could also play around with the structure and phrasing a little (even though Jade's delivery was excellent), if you wanted to that is. For example: "*Nothing* can travel faster than the speed of light...Except...Nothing, which *can* travel faster than the speed of light...In fact because *nothing* can travel faster than the speed of light it means that *nothing* else is faster than *nothing* when it comes to cosmic speeds - *not one thing*!" Or any variation you like really. A few other cool facts are that the speed of light isn't really about the speed of light. It's just the fastest speed that any information can be communicated between any two things. Light travels at that speed simply because it's a massless particle, and all massless particles *must* travel at that speed. It's our universes law. To give an idea of the vastness of cosmic scales you could try giving the speed in km/h or mp/h for a bigger 'wow' factor - and then tell your class how long it would still take them to reach the next nearest star or galaxy! But, interestingly, for an individual photon of light that long journey would seem to pass in precisely no time at all. Because for anything travelling at that speed time just completely stops - you would arrive in the Andromeda galaxy without noticing even the tiniest fraction of a nanosecond having elapsed. That long, long, long journey would feel like...*Nothing*🤦🏻♂️! Good luck with the project 💁🏻♂️✨
@Ozelea
3 жыл бұрын
@@simesaid thank you alot. You are the best🙋♂️
@ScienceAsylum
3 жыл бұрын
I love your physical demos! The one at 7:00 (ish) blew my mind. I had no idea you could demonstrate Doppler with water like that.
@nileshkulkarni6196
3 жыл бұрын
Hey there a big fan here
@alan-pj8hx
3 жыл бұрын
wow nick is here too
@MJ-em_jay
3 жыл бұрын
Oh, a collab between these two would be AWESOME! Edit: a word
@CallsignJoNay
3 жыл бұрын
Hey crazies
@scienceium5233
3 жыл бұрын
big fan
@integza
3 жыл бұрын
Seeing Kepler's head on your body it's gonna give me nightmares until I perish
@crazychild64
3 жыл бұрын
What are u doing here I thought u were to busy creating Tesla valves 😅
@abm8017
3 жыл бұрын
TESLA VALVES
@VOMITQUEEN
3 ай бұрын
Idk about you, but I burst into laughter at that part 😂
@rbkstudios2923
3 жыл бұрын
Wow Jade, you've truly outdone yourself on this one.
@upandatom
3 жыл бұрын
glad you enjoyed it!
@rbkstudios2923
3 жыл бұрын
@@upandatom 😊
@brando3342
3 жыл бұрын
@@upandatom I would like to talk to you about your claim of "nothing" expanding faster than light.
@DavidvanDeijk
3 жыл бұрын
Loved the bath tub Doppler explanation. Never seen that explained so beautifully. I would have liked to see you return to Keppler's wall at the end with the virtual horizon.
@elguapo42000
3 жыл бұрын
I’m not from Australia, but I love the fact that your earth model has Australia front and center
@mtekleel
3 жыл бұрын
Lol...rip flat earthers 🤣🤣
@DeBanked
3 жыл бұрын
Every country always shows itself as centre in atlas images
@mstandenberg1421
3 жыл бұрын
Mine doesn’t. Yes, it’s mine.
@shogunate2022
3 жыл бұрын
@@mstandenberg1421 LOL love your comment.
@amanchaudhary3340
3 жыл бұрын
You guys- Up and atom, Veritasium, Science asylum, Real engineering, are all awesome!! The information you give is always authentic and the approach is always interesting. Thank you very much guys. You are doing an AMAZING job creating such an environment for education.
@KhAnubis
3 жыл бұрын
Seriously those animations though... and the writing... and this video in general
@brian8507
3 жыл бұрын
I am in love
@AlternateKek
3 жыл бұрын
Simp
@kalidilerious
3 жыл бұрын
yeah it all SUCKED
@johncharlesharrop4756
3 жыл бұрын
@@brian8507 smashable indeed
@computechcommerciali.t3265
3 жыл бұрын
6:14
@brindlebucker4741
2 жыл бұрын
Absolutely deadly effective demonstration of Doppler Effect! Seeing a demonstration like that makes it readily apparent and practically eliminates the need for a lengthy explanation. I wish there were more easy to grasp demonstrations like this because I think it would have and would have had a huge impact on the general public's understanding of science in general. I think, too often, the average person might have a good intuitive understanding in their own mind about something that they have integrated into their knowledge base, but when some science sceptic or a child asks them: Explain this to me so I can understand, they might struggle to do so because they lack easily replicated demonstrations like this. Imagine just being able to put water in a bathtub or basin and show Doppler Effect in a way that you can SEE it, rather than asking someone to first imagine what the sound waves of an ambulance siren might look like. Seeing is so important to humans for us to understand something. Seeing, for us, often produces that 'Eureka!' moment. You still might not be able to explain it, but you GET IT! and you get it immediately. This is great stuff, and if you do nothing else with your channel but simply spread this demonstration like a meme, you will have contributed greatly to your fellow human's understanding of key scientific and cosmological concepts/theories. Keep up the great work!
@Dudleymiddleton
3 жыл бұрын
I have never seen that demonstration of the doppler effect before with the moving dropper - it shows whats going on literally! Thank you for a fascinating video, Jade! :)
@upandatom
3 жыл бұрын
you're welcome!
@Chris.Davies
3 жыл бұрын
2:58 - Best CGI animation I have ever seen of a bounded universe. Bonus points for adding a layer of simulated claymation! Bravo!
@infiniteaseem6523
3 жыл бұрын
05:01 "until Edwin Hubble came along with a clean lens" I'll see myself out now.
@mebamme
3 жыл бұрын
I actually thought that was what it was leading up to. ._.
@mebamme
3 жыл бұрын
@JT Raven Yep, that's the joke! :)
@Hugh_Jurrection
3 жыл бұрын
Great videos! As an Electrical Engineer and 'A' level Maths teacher, I really appreciate your methods of explanation. Wonderful content and I hope you have a lot of success to inspire and educate the youngsters coming through! Much love from the UK
@MedlifeCrisis
3 жыл бұрын
How you are still getting better and better with each video is ridiculous. In fact, HOW are your videos continually improving when they're already so good? IT'S A PARADOX. Please solve in a future video.
@Wrackey
3 жыл бұрын
Well look at that! My other favorite creator that I met through a Tom Scott guest video! However while I now understand why some fishermen can hold their breath for 10 minutes, I still don't intuitively understand "how knot to hang a painting" :-/
@user-ev7qw8oi7e
3 жыл бұрын
So Jade just explained what i learned in a 3 month college course in 10 minutes. If school was as interesting as Jade's videos, I'd be a genius.
@KhalilEstell
3 жыл бұрын
+1 this
@upandatom
3 жыл бұрын
Thanks for being so supportive all the time Rohin :)
@esteban.bernal
3 жыл бұрын
Well I came down to the comments to say this exact thing, it's amazing how Jade's videos keep getting better. Congratulations and keep them coming!!
@barryon8706
3 жыл бұрын
The illustration with the tub was the best I've ever seen, and I'm an old nerd. I've seen a lot of them. If Olber had known about black holes, which can intercept light and not get hotter (getting cooler, even), he could have used those to muddy things a bit.
@petersilva037
3 жыл бұрын
great video... the bathtub demo was the most straightforward way to demonstrate the doppler effect I have ever seen. very cool!
@ReflectingMe2024
3 жыл бұрын
Jade, this is so brilliantly done. What a marvellous explanation, delivered in your unique style, and which couldn’t have been done in any better way. Just fabulous. Oh... and bum to the critics, your presentation and acting in this is top notch, please don’t let them get to you. Much admiration and respect, from John, Wales, UK. 👍
@matthewluecke3704
3 жыл бұрын
Jade's husband (in French or with accent), "Hurry up in the bathroom, Jade! I have to go!!!!" Jade, "I'm doing an experiment!"
@upandatom
3 жыл бұрын
hahahaha he was actually filming
@raidermaxx2324
3 жыл бұрын
i think shes australian dude
@matthewluecke3704
3 жыл бұрын
Her husband is French, though. She has him pronounce French stuff in other videos.
@masicbemester
3 жыл бұрын
wait Jade science-related content with Jade is that I want Homestuck to get out of my head now
@aureliabackup7313
3 жыл бұрын
Space: "nothing is allowed to go faster than light" Also space: *actively expanding faster than light*
@duderama6750
3 жыл бұрын
Great point, and seemingly lost on certain hosts.
@carlosarturofloresclaros4392
3 жыл бұрын
Hey Jade! Your content is overcoming itself constantly! Great work! Greetings from Mexico
@upandatom
3 жыл бұрын
Thank you!!!
@rahuldamala7021
3 жыл бұрын
So much in love with this. The way you explained, visuals and the cherry on top is the outro music
@jasonbone5121
3 жыл бұрын
Well that blew my mind! Bonus points for the visual on the Doppler effect.
@jesperjohansson6959
3 жыл бұрын
"It's true that nothing can travel at the speed of light, except, NOTHING can travel faster than the speed of light" what a line
@Freakoutski
3 жыл бұрын
The real mystery is why weren't you inundated with moths while filming outside in the dark with a studio light pointed at your face.
@upandatom
3 жыл бұрын
the lights were trust me
@user-xl8uo9gp9p
3 жыл бұрын
they tried,but couldnt reach her,space was expanding lol.
@josephcoon5809
3 жыл бұрын
The light is more luminous than the light bouncing off of her face. If you have a porch light next to your front door, put a brighter light a few feet away to keep bugs from hanging out near your screen door.
@Seegalgalguntijak
3 жыл бұрын
Wow, this horizon of the observable universe, behind which nothing can "escape" to reach the earth (our center of perception), this reminds me quite a lot of the event horizon of a black hole, where also nothing can escape, not even the light....could it be that the expansion of space-time is basically something like an inverse of a black hole? And what implications would that have?
@l00d3r
3 жыл бұрын
Einstein's General Theory of Relativity also predicts the existence of white holes, which are the opposites of black holes. Even though a white hole has never been observed, I sometimes think that maybe the Big Bang was a white hole event. I sometimes also think that as black holes evaporate due to Hawking Radiation, that they might turn to a white hole when a critical mass is reached and it can no longer stay a black hole. At that point, the gravitational force can no longer overcome the repulsive forces of matter particles and energies inside, sort of like a supernova. These are just thoughts, though.
@banjaxed8334
3 жыл бұрын
the way you speak has a rhythm that kind of feels like you're singing.
@destroyerwill6122
3 жыл бұрын
Fun fact the Triangulum Galaxy (M33) is even further than Andromeda and can also be seen with the naked eye in really dark (Bortle 1 and 2) locations. This might be the furthest galaxy you can see with the unaided eye.
@lucasbartel6315
3 жыл бұрын
I love that the earth is centered on Australia
@thekhoifish0146
3 жыл бұрын
*As it should be*
@dustinsmith8341
3 жыл бұрын
That music at the end is jammin'. I love it.
@frictyfranq321
3 жыл бұрын
Okay this was really good! All I can do is appreciate you on this incredible work.
@davidh.4649
3 жыл бұрын
Jade this was a great video! Wonderful job of explaining difficult concepts just enough to follow your overall theme. I had to laugh a bit though ... 8:18 Jade holds her rose, smiles, and mentions romance. Then 14 seconds later Jade nonchalantly tosses the rose aside. 😂
@upandatom
3 жыл бұрын
more important things to talk about
@Gintaras64
3 жыл бұрын
Visual aspect of this episode is really professional.
@AgentOccam
3 жыл бұрын
I’ve joined Curiosity and love it. Highly recommend it. That series you recommended about math being discovered or invented “magic numbers” was excellent.
@unitelanka
3 жыл бұрын
I had a proper 🤯🤯🤯 moment when you connected the expanding universe to the dark sky paradox. Love your work.
@monacaravetta
3 жыл бұрын
I'm almost 60and LOVE to learn new things. Thank you so very much for what you do. Please keep em coming!
@frenstcht
3 жыл бұрын
You're like Hannah Fry: Your voice-accent combo is fantastic. I'd love to hear audio of you reading William S. Burroughs in a cheery, upbeat tone. The juxtaposition would be hilarious.
This is the first time I actually understand a video about this theme, thank you!
@GrooseIsLoose
3 жыл бұрын
It is depressing to know that we will never be able to see the stars beyond the visible universe
@Anonymous-zd1ow
3 жыл бұрын
Just imagine all those photons that want to meet us but expansions was like "lol naw bro" 😭
@MarcelinoDeseo
3 жыл бұрын
And in the far future, we'll only see the lights from our own galaxy (unless the Big Rip is not true)
@fewwiggle
3 жыл бұрын
"It is depressing to know that we will never be able to see the stars beyond the visible universe" I hear that those people are a bunch of jerks anyway....
@BlackHole-qw9qg
3 жыл бұрын
Maybe we'll discover in the future a new way to travel faster than light so personnaly I'm not giving up
@bearcubdaycare
3 жыл бұрын
To be fair, there's quite a bit just in what we can see.
@stefanniemiec8727
2 жыл бұрын
the best visual explanation of the Doppler effect EVER. Your explanations are straightforward, without being insulting or TOO inaccurate. Truly elegant videos
@victording6698
3 жыл бұрын
I love your earth graph, where Australia is at the center of the world 🤣🤣
@popquizzz
3 жыл бұрын
Best visual description of doppler effect by using water drops in a tub of water.
@kabuteshiitake7071
3 жыл бұрын
Your channel has quickly become one of my favorites.
@upandatom
3 жыл бұрын
aww thank you so much!!
@Samurook
3 жыл бұрын
That question has actually been around for even longer. I made my best try to translate the first conversation about it in modern english: "why sky dark?" - "night no sun" - "uga"
@adityaanantharaman7963
3 жыл бұрын
Finally! A cup of coffee, and twelve and quarter minutes of pure physics with Jade 😊 Excellent camera work by the way!!
@upandatom
3 жыл бұрын
thanks!
@abouttime5630
3 жыл бұрын
I just love it when I see you uploaded a new video....and your previous ones too :)
@yannickruse
3 жыл бұрын
An infinite static universe would be gravitationally unstable as well though, it’s not only the finite universe that eventually collapses in on itself
@soniatiwari9986
3 жыл бұрын
Why will a static universe be unstable?
@kareematef7347
3 жыл бұрын
you are very talented in simply explaining many scientific ideas in a very simple way anyone can get through with it good job and continue
@Ownage4lif31
3 жыл бұрын
Damn, the animation style is much more high quality now. Great work!
@meanbeanmachine
3 жыл бұрын
I love all your videos, but this one is my favorite so far. The editing really good on this one.
@shantanu7985
3 жыл бұрын
Me: gave rose to my crush on Valentine's day My crush: 8:31
@rsmania01
3 жыл бұрын
:’(
@bestofmovies9465
3 жыл бұрын
:-(
@shantanu7985
3 жыл бұрын
=(
@anthonyreis3533
3 жыл бұрын
D-:
@anandsuralkar2947
3 жыл бұрын
°_°
@engineeringmaniac9696
2 жыл бұрын
'Paradox Girl' 😄 Love your content, illustrations & at most, your gestures ! ❤️
@rbkstudios2923
3 жыл бұрын
Nothing can travel faster than speed of light Except, *Nothing* can travel faster than speed of light *Einstein has left the chat*
@J_i_m_
3 жыл бұрын
That's a good one!
@jitteryjet7525
3 жыл бұрын
Einstein did not say nothing could travel faster than the speed of light, his theories do not forbid it.
@localtitans4166
3 жыл бұрын
Great guy!!
@mrgyani
3 жыл бұрын
That was brilliant.. It will be something I quote in future for sure.
@RideAcrossTheRiver
3 жыл бұрын
@@jitteryjet7525 At the speed of light, there's no distinction between matter and energy
@charlieshanowsky6103
3 жыл бұрын
This video was good enough, and then - this GREAT music at the end. Sort of 80s retro 8-bit feeling.
@jakazen
3 жыл бұрын
Some kind of big.... BANG 😂
@teddyrwilliam1428
3 жыл бұрын
Planets colliding happens all the time
@ehrenloudermilk1053
Жыл бұрын
You do the obviously difficult task of explaining a paradox to people very well
@grotmx
3 жыл бұрын
That was really great, Jade. Definitely one to show my daughters
@upandatom
3 жыл бұрын
:D !
@qwerty_and_azerty
3 жыл бұрын
I was a bit confused by the initial explanation of the paradox. I thought maybe the solution was that the sky is dark because our eyes/telescopes have limited resolution and limited exposure time. If photons from very distant objects only hit our sensors very occasionally, we won’t perceive their light, I thought. Isn’t this was the Hubble Deep Field experiment showed? That a dark patch of sky actually contains a lot of light if you significantly increase the exposure?
@chrismantonuk
3 жыл бұрын
This is such a clear explanation, thank you! I’ve also not seen such a clear demonstration of the Doppler effect before, very good. Question: would the sky look bright if viewed through a sensitive infrared camera? Also, does some light “shift” further into radio waves?
@upandatom
3 жыл бұрын
yes it would!
@chrismantonuk
3 жыл бұрын
@@upandatom thanks!
@michaeldamolsen
3 жыл бұрын
@7:02 - Behold! The Droppler effect :)
@gottenm9106
3 жыл бұрын
If the universe is expanding and the expanding speed is rising (because of dark energy) doesn't that mean that eventually that speed will pass speed of light and then we won't be able to see stars we see now?meaning the visible universe will shrink?
@jursamaj
2 жыл бұрын
Indeed, things slip beyond the horizon out of the visible universe all the time, we just don't notice it. And as expansion accelarates, this will happen more. See en.wikipedia.org/wiki/Cosmological_horizon especially the section on Hubble horizon.
@jursamaj
2 жыл бұрын
Also this video: kzitem.info/news/bejne/2Zegv2uwhHt-d3Y
@scottmitchell6047
9 ай бұрын
That's the best example of the Doppler effect I've ever seen. Very well done.
@generalfishcake
3 жыл бұрын
There is one thing faster than the speed of space expansion: The speed at which I clicked the Like button.
@kurtsnyder4752
Жыл бұрын
6:14 Our whole universe was in a hot, dense state Then nearly fourteen billion years ago expansion started, wait The earth began to cool, the autotrophs began to drool Neanderthals developed tools We built a wall (we built the pyramids) Math, science, history, unraveling the mysteries That all started with the big bang (bang) Since the dawn of man is really not that long As every galaxy was formed in less time than it takes to sing this song A fraction of a second and the elements were made The bipeds stood up straight, the dinosaurs all met their fate They tried to leap but they were late And they all died (they froze their asses off) The oceans and Pangea, see ya wouldn't wanna be ya Set in motion by the same big bang It all started with the big bang It's expanding ever outward but one day It will pause and start to go the other way Collapsing ever inward, we won't be here, it won't be heard Our best and brightest figure that it'll make an even bigger bang Australopithecus would really have been sick of us Debating how we're here, they're catching deer (we're catching viruses) Religion or astronomy (Descartes or Deuteronomy) It all started with the big bang Music and mythology, Einstein and astrology It all started with the big bang It all started with the big bang
@peasant8246
3 жыл бұрын
4:48 At this point I said: _"No, don't..."_ because I was expecting her to start promoting some online retailer or other that sells telescopes =)
@economicist2011
3 жыл бұрын
I'll take explicit pitches by KZitemrs over repetitive ads chosen by Google executives every time I'm offered. But yeah it's got a strange 50s-TV feel to it then they cut to a sponsor promotion, even when Adam Ragusea does it, and he has all but mastered the art of the sponsorship segue.
@billlangley9591
2 жыл бұрын
I notice that a lot of us "light duty physicists" do not understand that "gravity" is an attraction between localized warped space-times, and that it is energy that warps space-time. So, some of us can't understand why photon paths can be bent "because it does't have mass". I try to tell them that E = mc^2 and E = hf BOTH warp space-time...and, incidentally, a coiled spring, mass at the top of a cliff, and a TBSP of gasoline (petrol) in an O2 gas also warps space-time (potential energy), ie, "rest mass". It sure would be nice to see a documentary on this...and thanks for your wonderful presentations.
@user-li9xc9ur1m
3 жыл бұрын
KZitem Compression Algorithm: "Oh I see, you've decided to upload nice images of stars in the night sky, looks a work for me!"
@luizeduardoalvesdesouzabri2125
3 жыл бұрын
Omg the sheer qualitaty of this video! Congratulations
@trewaldo
3 жыл бұрын
Up and Atom lightens up the Dark Sky of scientific mysteries of the world and universe! Loved this video, Jade! 🥰🤓😍
@mladensamardzija
3 жыл бұрын
I found this channel due to extra free time (covid recovery). I am already subscriber for some other similar channels but i just can’t stop watching Up and Atom. Jade is really sweet and super interesting with easy understandable, fresh way of going through topics. Keep on going! Cheers from Serbia
@BinaryDood
3 жыл бұрын
"nothingness" does not trully exist though
@ffggddss
3 жыл бұрын
At the stage where you're torn between an infinite universe casting infinite light on the Earth, vs a finite universe, shrinking due to mutual gravitation, a finite universe isn't necessarily shrinking. It can have enough outward kinetic energy to overcome the mutual gravitational pull. BTW, there's another resolution to Olbers' Paradox that I saw in a book-collection of astronomy articles from Scientific American from the late 1950's, and have never since run across. And I think it's a very good one. An article on Olbers' Paradox in that collection pointed out that, even in an infinite universe, you could have the luminous objects (the stars) distributed, not uniformly, but hierarchically. For instance, stars would be grouped in clusters, with a certain average distance apart; • the star clusters would be separated by some multiple of their size, and grouped into galaxies; • the galaxies would be separated by that multiple of their size, and grouped into galaxy clusters; • the galaxy clusters would again be separated by that multiple of their size, and grouped into superclusters; etc., etc., ad infinitum. There would then be an infinite number of stars whose cumulative light would be a converging geometric series, and therefore, finite. With the right choice of the hierarchy's parameters, you could obtain the actual starlight intensity that we observe. Of course, this isn't the actual resolution of Olbers' Paradox; that being an expanding universe of finite age, with a finite speed of light, all of which prevent infinite intensity from ever building up. Fred
@paulbinu3537
3 жыл бұрын
Hello there!
@ARCANEmateCLAN
3 жыл бұрын
General Kenobi
@upandatom
3 жыл бұрын
hello!
@charuchaubal9913
3 жыл бұрын
I really enjoyed how you went deeper into a topic that’s not usually discussed. Also I like how you referred to a specific show that’s related to this topic, so that we can learn more about this fascinating area (better than a generic endorsement).
@officialdropnation
3 жыл бұрын
❤️
@AustinBTC2012
3 жыл бұрын
First time watching one of your videos, very interesting. Thank you for your time.
@mohammedmahshook3612
3 жыл бұрын
Judging from the topic... isn't this the Olber's paradox
@Xeridanus
3 жыл бұрын
Judging from your comment, you didn't watch the video.
@mohammedmahshook3612
3 жыл бұрын
@@Xeridanus Yup😶 Iam watching now....
@igtorque
3 жыл бұрын
I read about this paradox almost 50 years ago, when I was a boy, in an Asimov's book. For one reason or another, I took for granted that the solution was "dust". Today, KZitem suggested this video to me and I said to msyself: "Hey, that was the paradox from that guy...! Was it Oorst? Dilbert? Obsert?" And now, after all this time, I've found that I already knew all the elements of the solution, but never assmebled them to get the correct answer! A girl had to be born, grow, learn, understand, and make a video to show me that truth is, sometimes, so ridiculosusly evident... Thank you so much!
@LivingNow678
3 жыл бұрын
We are living in a Universe and the Universe where is living in ? In the INFINIT Greetings from Italy 👍✨💫⭐🌍❤️🎵🎶👌🙏
@meghanworkman6449
3 жыл бұрын
The analogy of walking too slowly on an escalator going the wrong way really helped me grasp the concept. This was a great video taking a complex subject and making it easier to understand. New sub!
@TomHaney
3 жыл бұрын
that was perhaps the best demonstration of the Doppler Effect that I have seen! Thank you
@wingslax
3 жыл бұрын
The bathtub demonstration was great! You could use that same set-up to talk about the shockwaves on supersonic aircraft, too! A practical demonstration of moving faster than "the speed of sound" would be awesome to see!
@CthulhuTheory
3 жыл бұрын
Here's a fun thought experiment: To understand the base idea here, imagine 3 objects in a row; A, B, and C. Now, imagine all 3 are in motion with the following speeds in the same direction (think of cars on a road, if it helps) : A= 50, B= 100, and C=150. From each perspective, the distance between each is growing. A sees B and C racing ahead of it. B sees A falling behind while C races ahead, and C sees itself as leaving A and B in the dust. Now, imagine if these objects have no point of reference to know which direction they're actually moving. A and C both see the other objects racing away from them with the further object moving the fastest, but to B, both are moving away from it at equal speeds. Without any reference point, motion of each is relative, and there's no way to know if A or B is the fastest, all you know is the motion relative to each. We know that space itself appears to be expanding and at its current rate of expansion will eventually do so at a rate that exceeds the speed of light resulting in the entire universe eventually becoming too spread out to see any stars. So back to the objects: what would it look like to an objects inside a black hole as they fall inward (presuming they are not actually ripped apart by the gravitational forces)? As each falls into it, they'll accelerate at their different speeds, and each will seem like the other two are racing away. This means that should the objects survive the initial tidal forces, they'd have no way to even know they're in the black hole, especially if the warping of spacetime itself continues inward, rather than outward, inside the black hole. To the objects, it would appear to them as though the black hole were expanding. Further, I don't know if there's any established limit to how much space can expand or contract, and since physics is pretty much universally relative, it's entirely possible that it can happen both directions infinitely, but the observer's perspective wouldn't ever notice a change. (Think time dilation in principle, the faster you go, the more time slows down for you, and no matter how fast you go, light speed always remains the same relative to you.)
@anothersquid
3 жыл бұрын
Your doppler demonstration in a water tank was very well done. I will be remembering that one.
@mattstaat2646
Жыл бұрын
Brilliant 👏 I hope to find love with a character like yours. I always think about the "spooky action at at distance" when the topic of light speed comes up.
@rickynuckles5454
3 жыл бұрын
Hi. Just subscribed. KZitem suggested your video and the title had me interested. I watch a lot of PBS spacetime KZitem vids and I really enjoyed yours it was much simpler to understand without having to stop go back and watch again lol. I have a short attention span and I zone out pretty quick but you kept me engaged. Thanks. I will be watching more of your videos in the future. Expect more comments
@mrunfunny
3 жыл бұрын
I had read about this in "the brief history of time". Explanation in the book is accurate and to the point but this video goes in depth and is very detailed. Love when you think you know something but still end up learning many new things.
@jharmley6882
3 жыл бұрын
Hahahahahahaha, "It's Quite Romantic" blushes and continue with the scrip like in a hurry. 8:15
@foley15136
3 жыл бұрын
@7:41 *YES* *and NO, but still YES*
@hansekbrand
8 ай бұрын
Great video! I only have one minor nit-pick: I would not say that the expansion of space constitutes "traveling", or that nothingness "travels" faster than the speed of light. That being said, thanks for teaching me why the night sky is dark!
@dirtpoorchris
3 жыл бұрын
The density distance thing is also diffused and obeys the same law with dust particles in space blocking the light. And the further you get you end up having WAYYYYY more space dust/rocks/whatever blocking all that crap thats far away. Till eventually you get to a distance where its almost 100% chance that your line of observance becomes saturated by debris and blocked from view. So that once you get SOOOOO far away its almost 100% chance to be blocked by a dust/debri barrier
@jaypearce6743
3 жыл бұрын
Best demo ever in the bath. Never saw such simple creative demonstration.
@raymitchell9736
3 жыл бұрын
You touched on a lot of great points, the fact that the sky _is_ dark at night but the "why _is_ it dark?" question never occurred to me... but you had to bring a onion into the picture, then I became distracted by a concept of a "cosmic cheeseburger" that caused me to go to the refrigerator... and... uh... what was I commenting on? Oh yeah, the dark sky paradox... It is said that the cosmic background radiation is the light from the big bang, but the expansion of the space between galaxies can expand faster than the speed of light...Then how can we see this background radiation?
@skz5k2
3 жыл бұрын
A correction Already in 1845 Lord Rosse, using a 72" telescope, draw several "nebulae" with their characteristic (for ex. M51, Whirpool galaxy) In April 1920 there was the "Great Debate" at National Academy: Shapley and Curtis presented their hypothesis. Shapley about a big MW (diam=100kpc) including everything, also the nebulae; Curtis the Kepteyn Universe, a smaller MW (diam=17kpc) and the nebulae are other "galaxies". Then in 1922 Hubble measured the distance of Andromeda's Nebula using Cepheids and put it definitely outside MW (~300kpc; actually it is 700kpc). And the Universe was way bigger than we thought! (at least bigger than Shapley thought)
@zlaxdude1
3 жыл бұрын
The dropper demonstrates was the best in person experiment I’ve seen for the Doppler effect, especially for low budget equipment!
@contrast1908
Жыл бұрын
Best explanation on this subject I have seen so far.
@bjornargw
3 жыл бұрын
"I don't know how to tell you this, but they were moving away". That's exactly how you tell us this.
@ilhemminora2365
2 жыл бұрын
{وَالْمُرْسَلَاتِ عُرْفًا (1) فَالْعَاصِفَاتِ عَصْفًا (2) وَالنَّاشِرَاتِ نَشْرًا (3) فَالْفَارِقَاتِ فَرْقًا (4) فَالْمُلْقِيَاتِ ذِكْرًا (5) عُذْرًا أَوْ نُذْرًا (6) إِنَّمَا تُوعَدُونَ لَوَاقِعٌ (7) فَإِذَا النُّجُومُ طُمِسَتْ (8) وَإِذَا السَّمَاءُ فُرِجَتْ (9) وَإِذَا الْجِبَالُ نُسِفَتْ (10)} [المرسلات : 1-10] ( 1 ) By those [winds] sent forth in gusts ( 2 ) And the winds that blow violently ( 3 ) And [by] the winds that spread [clouds] ( 4 ) And those [angels] who bring criterion ( 5 ) And those [angels] who deliver a message ( 6 ) As justification or warning, ( 7 ) Indeed, what you are promised is to occur. ( 8 ) So when the stars are obliterated ( 9 ) And when the heaven is opened ( 10 ) And when the mountains are blown away {إِذَا الشَّمْسُ كُوِّرَتْ (1) وَإِذَا النُّجُومُ انكَدَرَتْ (2) وَإِذَا الْجِبَالُ سُيِّرَتْ (3) وَإِذَا الْعِشَارُ عُطِّلَتْ (4) وَإِذَا الْوُحُوشُ حُشِرَتْ (5) وَإِذَا الْبِحَارُ سُجِّرَتْ (6)} [التكوير : 1-6] ( 1 ) When the sun is wrapped up [in darkness] ( 2 ) And when the stars fall, dispersing, ( 3 ) And when the mountains are removed ( 4 ) And when full-term she-camels are neglected ( 5 ) And when the wild beasts are gathered ( 6 ) And when the seas are filled with flame
@suyashverma15
3 жыл бұрын
Amazing. You always succeeds in adding something valuable into my knowledge. 👍☺
@jimtokee8450
3 жыл бұрын
You are the reason why I love science!! Thank you so much❤
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