How Does Time Actually Work?
Вставка
- Опубліковано 16 чер 2024
- Get a great Displate deal at www.displate.com/hotu or my discount code HOTU for 1-2 = 22% OFF/3+ 33% OFF, available for a limited period of time, excl. Limited Editions and Lumino. Discount applied automatically when using link.
-----------------------
Written by Colin Stuart
Check out his fantastic astronomy newsletter here: colinstuart.substack.com
Edited and Animated by the legendary Manuel Rubio - subscribe at @ArtandContext
Narrated by David Kelly
Thumbnail art by Ettore Mazza: ettore.mazz...
Sound Editing by Craig Stevenson
Whale Art by Joseph Ioseliani
Galaxies, space videos from NASA, ESA and ESO.
Music from Epidemic Sound, Artlist, Silver Maple And Yehezkel Raz.
Stock footage from Videoblocks, Artgrid and Shutterstock.
00:00 Introduction
04:54 How Soon Is Now?
18:08 Where Is Now?
31:16 When Is Now?
43:25 The Illusion of Now
#time
Get a great Displate deal at www.displate.com/hotu or my discount code HOTU for 1-2 = 22% OFF/3+ 33% OFF, available for a limited period of time, excl. Limited Editions and Lumino. Discount applied automatically when using link.
The now same as zero not exist - just show me zero - yes there is 0.000001 but I will add one zero for endless time so you will never reach zero. The now is... time stop which means not exist.
Objective now does not exist only in relativity. Theories like Einstein's can sometimes create an illusion of false reality based on unfalsifiable experiments. Because our knowledge is rooted in these false maps of reality, we cannot comprehend the gap between quantum mechanics and relativity.
I was going to use the discount code but they currently have a spring sale ending in a couple days that is slightly better 😥
9@@classicalmechanic8914
The problem is how speed is measured. It is measurement problem. 186000 miles/second. This per second/minute/hour/days/weeks/years is the problem. Distance we travel, we can see the for example 100 meter dash run, but TIME! Is so subjective ill defined.
Until we know what is time, how we define time, we may never know light properties.
May AGI will guide us soon 😅
Anybody else tuning in to fall asleep? 😅 (comment below)
Yes, the narrator's soothing voice is exactly what I want to hear before falling asleep. Great quality video. Love it. ❤❤❤
I listen to this kind of content to fall asleep
Moi deux….
I started watching/listening several times dut have yet to stay up to the end😮
Nope this makes me not get sleep if you understand what he's trying to say
"human intuition is no yardstick for the way the universe really works" I really wish more people could accept this
Or better still , consider it
I heard something similar
"Universe has no obligation to be comprehensible to our primate brain evolved for hunting and gathering"
Being human is a possibility to beyond but how many willing to break down the boundaries they built themselves.
We are embedded in a situation of massive cultural inertia
in which obsolete ideas echo down the generations
and even though it's been two thousand years
since humanity became conscious
the majority still find magic to be
the more satisfying explanation.
Human mental-vital intuition that is.
This man’s videos kept me going for a while, wasn’t getting out much, wasn’t doing well but these videos ground me….now I’m over a year sober and enjoy these videos more than ever! Thank god for the educational UA-cam
Thanks for sharing, brother. I am in the exact same space. We will do this. Have to - I don’t have one more in me.
I’ve been consuming these documentaries to keep my mind occupied at the same time as it is healing, both psychologically and especially physically.
I'm sober but have lost all faith in people.
@@nboss968why
Congrats on the sobriety! ✌️
The producer/writer/researcher is actually a woman
YES!!! When I see a new upload from this channel, I get so happy. I used to be happy and excited about life when I was studying physics in college. Taught high school physics after that and had so much fun with my classes. Unfortunately, the reality of low teacher pay, new family on the way, and my other option to make more than double if I work with computers, I went back to my tech job. Now I am almost always depressed, feel like there is no hope and nothing to look forward to in life any more.
That being said, whenever I see these videos it takes me back to my happy place. Thanks for all the effort you guys put in to put these out. They mean the world to some of us.
Damn that's a sad story! Forget what is now; what more can I say? Money and world order really sucks..
Can you teach at a higher level, like at a bustling university, sometimes part time instruction is needed which can pay well enough to fit in some part time teaching. Even offering tutoring can help fill that desire to teach? Even when I did teach there were special needs students that need additional help and can be very exciting to see how you can reach them and help them along. I am fearful that this next generation is really going to be a struggle with the necessary people interaction skills.
Is the first law of thermodynamics a law?
Not a speculation?
You were unfaithful to your first love so now the universe is extracting a penalty.
Now. You're looking at now, sir. Everything that happens now, is happening now.
Dark Helmet: What happened to then?
Colonel Sandurz: We passed then.
Dark Helmet: When?
Colonel Sandurz: Just now. We're at now now.
Dark Helmet: Go back to then.
Colonel Sandurz: When?
Dark Helmet: Now.
Colonel Sandurz: Now?
Dark Helmet: Now.
Colonel Sandurz: I can't.
Dark Helmet: Why?
Colonel Sandurz: We missed it.
Dark Helmet: When?
Colonel Sandurz: Just now.
Dark Helmet: When will then be now?
Colonel Sandurz: Soon.
Dark Helmet: How soon?
Spaceballs forever 🙌
I immediately thought of this scene when I saw the title!
Dammit, beat me to it!
You, kind sir.. Win the Internet for today... 🤣🤣🤣🤣
😂 I haven't seen the film but even that made me crack up.... Must be a good film.
What does space taste like?
Immediately I get the picture of my dog, head out the window, tongue out, just enjoying being alive while I drive.
It tastes like chicken. Apparently.
Dogs are the purest souls and we really don't deserve them 🙏
Disgusting mental image.
@@MrScoffins
Yes. But they don't taste like chicken.
Astronauts have said that for a short time after doing a space walk they can smell the suits and apparently its like burned sparklers.
I'm left with a question. When you die, your brain neuro pathways fire slower as you become brain dead. So, will our perception of time when we die slow down to an infinite perception on the last neuro event? I think I now believe in an infinite after-life, stuck in time, re-living my brain's last chemical burst of nirvana... forever.
I think Calculus solved Xeno's paradox. I do believe in the other side though because from the time I was a child I've been haunted by the supernatural. In fact it's so commonplace to me I actually call it the supernormal.
I sincerely hope that you idea is wrong. It would be horrible to experience one's own death . . . forever.
Wow...there's a thought! So, basically, you're suggesting in the end we all pass through a kind of an event horizon. Our time slows down, as if we're, well, approaching a black hole.
Hey i belive you. Just wanted to tell you that. I too have had strange, i
Unexplained events like you describe. @@KatrinaDancer
This is my thought as well. It also explains heaven and hell because your choices and feelings are going to be with you eternally. Make heaven on Earth because physics is going to make it eternal.
Still one of the best channels on you tube . Cosmology , physics , geology , mythology , history , and great storytelling all rolled up in one .
It's child level stuff. Very disappointing.
@@buddyhell7100 then why you watchin bro ?
Agreed!!
@@buddyhell7100 Sorry you're bored, Einstein. So you're just hear to share your greatness with us morons?
These videos are probably my most highly anticipated of any on UA-cam
cool
These videos are so high quality, better than professional TV content.
I know, right?
I wait all month for a new episode- checking for the "alert" bell every morning. Re- watching so many past episodes and then.... At Last!
A brand new HoTU. The pure joy of learning.
It sucks, they bored me to death...
Agree.
My past self has been waiting for this video. My future self has rewatched it multiple times. "Now" I finally get my hands on it!!
new sleep video dropped
I thought I was the only one
@@akutuominen5062 not alone
Have you guys seen Sam Sulek?
Sleep video??? Nah you’re buggin’ I’m awake for any video on this channel lol
This is so true, I want to watch it but it honestly just puts me to sleep
45:07 as a kid when I discovered this I always thought of it imaginatively as if I was temporarily freezing time
I am so excited to watch this every night for a month straight
Glad I'm not alone
Samesies fam 🙋🏻♂️
Lmfao literally loading this up now to sleep to
the "universe should not exist" one is the GOAT but i am rly looking forward to this one as well
Lol. Go have a doobie😅
Almost all at once when you think about it, but one frame at a time when documenting it.
so well written and put together, massive props to your channels theyre all so awe inspiring
"as it seems to you or I"???
Precise -- but different and incorrect -- ages of the Universe.
A fine meal spoiled by the little bits of dog shit on the plate.
Somebody did some excellent work on the graphics. It's a pity for them to see their good work ruined by this pretentious gaseous verbiage.
The music, like the message, is at once chill, grand, and somehow slightly ominous. I love this stuff and it makes me feel so many different things.
As a Welsh person, I'll tell you that now is in a minute. As we all say, "I'll be there now in a minute" 👍
us greeks say that as well! 😂
@@inkynebula 😄👌
Ahem....
As also a fellow Welshman you forgot the butt/mush/brah off the end 😎🤣
@@inkynebula In Portuguese we use "agorinha" ("little now") and "agora agora" ("now now") for that 😅
I was just watching a new Michael fassbender movie called trespass against us, it seemed like he was playing sort of a blue-collar Welshman character. he kept calling his friends and children mush? I guess that is a term of endearment can one of you explain that to me just a little bit?
I had the itch to watch a new history of the universe banger and saw a new video uploaded a minute ago, awesome, thanks for the bangers
Found this channel only a few weeks ago. Super stoked for my first release.
Ooooh a new video on this channel. Can’t WAIT to listen!
Best practical explanation of a light cone I’ve heard so far. Really helped me better grasp concept
Holy crap. You took something I thought was obvious and explored phenomena that I had never considered. You did a great job. Thanks.
I think, the real question is, "is there a past or future?". Arguably, the "now" is all that can be said to exist since it is the only thing that can be perceived.
The past has already happened and is no longer present, and the future is an abstract idea of the progression of now. Neither are tangible, only the "now".
That was amazing. NOW I'm going to watch this episode over and over, like all of the others.
I was afraid I'd be watching this late, but I see my follie now.
The section towards the end would be even better to include how the "Brain makes decisions before you even know it" - published in Nature on April 11, 2008. Brain activity predicts decisions up to 10 seconds before they are consciously made! This directly impacts our sense of having free will - actions that we take are set in our brain - and can be predicted by instruments - before we are aware we “decide” to take that action.
That sounds a lot like deja vu.
Iirc follow-up study showed that this is primarily true for arbitrary decisions where the testee had no strong feelings towards the decision they were making. For less arbitrary decisions, the predective power of those tests faltered significantly.
Your videos are amazing. One of my very favourite you tubers. Thank you so much for opening my mind. 😊
time goes slowly when not having fun....and yet after years of not having fun, when looking back it seems like years were nothing. so time also changes depending on the angle i'm looking at it 😕
If now never ends, it's infinitely long, if now ends, it's like if never happened at all, in both cases it's not measurable
Everything that ends can be measured
@@boyzinthewood1 Then from that point of view, now is the units of time measured from the beginning till the end, what I meant to say is that if now had no observers, it would be like if there isn't now and it never was
@@odysseus8944 fair enough, that does make sense 👍
It's always now. There is no time that ever existed that wasn't.
@iunnox666 I'm sorry but nope! Not at all. Although every point in time was once "now" it immediately becomes past tense and can literally no longer be classed as now. You've described a contradiction.
I been waiting for this!!! I can now put this on in the background while I fall off to sleep
Your videos are my favorite thing on UA-cam. Absolute excellence.
Been waiting ages!! Worth the wait though thanks for all you do.
Some argue that “now” is the only time that truly exists, as the past is gone and the future is not yet here. Others suggest that time is an illusion, and everything is happening simultaneously, with our brains processing events as if they were occurring in a continuous sequence2.
One doesn't need to argue as you can conceptualize time in different phenomena. One would be "Clock Time". Another would be "Psychological Time." Add if necessary.
All simultaneously, in my opinion. Everything that was and will be is all happening at once on the same plane. Our limited human brain sequences the movement of the universe in what we consider "chronological order" but from the beginning to the end is all one....imo
@@RealDonfromBroward It is weird the dilation of time that happens around consciousness or observation, there is nothing else, for 14. Something billion years and then the superposition of all the states of every piece of matter collapses with an observer.
Just absolutely screeches to a halt so we can all have a snail race of consciousness trying to use the stream of absolutely bonkers information to output something useful to continue existing in what it sees as a valid state of now.
When every one of us dies our lightcone of possible positions stretches out into infinity, instantly taking the memory of its position as a human of earth into the end of time.
Another awesome and enlightening video! Thank you !
Love these videos thank you ❤
You did an excellent job. You hit on all the pertinent high points. I wish you were able to delve in Causality a great deal more. It is such an an important part bringing all the other parts together. Very well done. I was happy to recognise all the players accept one.
I've been waiting for this
True fans in attendance ❤
@@YargGlugwtf
Correct
Gate keepers unite! Phuque wads....
Hoody-hooooo 🎉🎉
@@YargGlugyou can't even spell anal? You must not love it that much
This video is living proof that the quality of the best youtube videos now far outclasses anything to be found on regular TV channels, which have become even more dire in recent years than before.
You touch on Julian Barbour and the Julius point. Some excellent work to understanding of time moving in 2 different directions at once. When you examine the Feynman diagrams and understand that the electron moves forward in time and the positrons move backwards in time it opens a whole new world. This is what I am trying to understand better. Thank you for the great review.
HOLY SHEET WHERES MY WEED?
Here we go 😎
Don't smoke 💀
@@BalthazarMaignan loading one up just for you brother
Here's one for the algorithm. Thanks for blowing my mind on a regular basis!
I wish all your other video animations were like this. Great Job Mr Manuel
40:26 every time you do a pause like this I have to check and see if the video is over. You got me every time.
I love you guys.I will probably listen to this at least sixty times before you post a new one.
I absolutely love the history of the universe and earth you’ve done. Fantastic content as always.
have you checked out their History of Humankind channel? it's fairly new..
Agreed!
Love the topic. One that i come back to often. Great video.
Excellent writting and delivery
I stay in awe imagining each little analogy, metaphor and fantasies you people create
Thank you
This Channel is amazing!!! Thanks a million!
"Even UA-cam videos is still surging towards them at 300,000 km per second". My first thought was this is a cool thought, but then I realized we're also transmitting TikTok videos to the cosmos at the same rate. We're doomed.
😂
What a great way to present such a mind-boggling topic!! VERY WELL DONE
Hell yeah I’ve BEEN waiting for a new video to drop
26:53 Never say "move through space", as it implies you can (it doesn't mean anything, nada, zip, nothing) there is no absolute rest frame and your are never moving relative to or through space. This is a great way to trip up students of special realtivity.
That's very odd. I've always considered one of your points to be absolutely true. There is no "absolute rest frame", I say it differently though "nothing is ever sitting still". I think i like you're way best. Thanks.
Your other point seems contradictory though since everything is always moving I belive there is only "moving through space" always and for ever. 😂😅😉
You don't get invited to a lot of parties, do you?
I understand stand your point that movement is relative to some fixed point, but if you’re moving really, really fast, faster than most other points of reference, don’t you accomplish this by ‘moving through space?’
@ronjon7942 Hi Ron :)
To your question I say Yes.
Keeping on mind that no point is fixed (everything is in constant motion), we move through space relative to some other moving point/s not a fixed or stationary point since there is no such thing as a fixed or stationary point. 😃
Awesome new vid time !!!!! Love your work.
History of the Universe, This is fantastic! I subscribed because I love it!
Just fantastic, like all the episodes on the channel. Please keep on existing!
Ok, so this is what Morrissey was so stressed out about…
I feel guilty watching these amazing videos for Free…
I would pay to have them all available add-free.
(this is the only UA-cam channel that clears that bar)
UA-cam premium is a thing.... @@cabanford
I pay for yt premium...no ads
@cabanford do you know melodysheep? That channel definitely passes the bar for me too
This was an incredible video. Thank you
Beautifully made
Always a great content on every episode 👏👏👏
Uploaded right before bed time. Thank you, History of the Universe, tonight will be a great sleep.
Great video. Thanks
This was absolutely wonderful to watch through, nice job.
Jumped on 19 seconds into “now.”
That is the measurement of a now
This makes me wonder how differently aliens would perceive time and how greatly that would interfere with our communication with them. Because most of our methods of communication rely on our perception of time
That's the plot of the movie Arrival. Well worth a watch if you like that kind of thing.
Some angels once left their dimension to enter ours, they had no problem dealing with our 3 dimensional worlds 4th dimension. They came to mate with the women of our dimension and did so. IDK If you will consider the forthcoming children aliens or not but they had no issue with time either. This information comes from the book of Genesis with a few refraneses in other books of the Bible.
As for space aliens originating from within our own dimension I have 0 credible information to offer you my friend 😢
As for those particular aliens mentioned above they are locked away for now but the children they produced appear to have become what today are known as Demons and very likely present themselves as space aliens among other cleaver cons they do so love to run on us humans. Be careful dealing with any claims of space aliens, They not all as friendly as they may claim to be. 😮
So amazing! Thank you
This one was awesome! Like all the rest from this channel.
New History of the Universe? I pack a bowl and click.
Saaaameeeee
a bowl of popcorn sounds good about now.
There’s not a channel out there that brings me this level of excitement when a new video comes out!
explore more! many many channels will make you think. Some can even teach.
I like the way when a train stops, if you are looking at the track through the window, your brain makes it seem like the train is still moving.
Excellent! Great audio script!
General relativity and quantum mechanics will never be combined until we realize that they take place at different moments in time. Because causality has a speed limit (c) every point in space where you observe it from will be the closest to the present moment. When we look out into the universe, we see the past which is made of particles (GR). When we try to look at smaller and smaller sizes and distances, we are actually looking closer and closer to the present moment (QM). The wave property of particles appears when we start looking into the future of that particle. It is a probability wave because the future is probabilistic. Wave function collapse is what we perceive as the present moment and is what divides the past from the future. GR is making measurements in the observed past and therefore, predictable. QM is attempting to make measurements of the unobserved future and therefore, unpredictable.
Good one. I had figured QM and GR cannot be ocmbined because QM is quantum and gravity is not. Gravity is generated/ Spacetime is curved as a resolutionless spline between quantum units of mass. I also do not believe a theory of QG will ever be formulated.
Some very interesting points you made there
Additionally, the random nature of quantum fluctuations is what gives us biological organisms our capacity for making choices, or the illusion of free will. Maybe it's better to say that the randomness prevents us in any case from predicting an accurate future. It hides our inescapable fate in a forest of fates.
bro you comment this on every video
@@bowenheinrich lol yup. And I won’t stop until someone can explain to me why it’s wrong.
Your videos are always gorgeous, well written and perfectly narrated. Thank You for making my evening!
Awesome video, as always! But I noticed something: in the animation of the Mickelson Interferometer at 22:53, isn't the beam splitter mirror rotated 90°? A quick image search suggests so and it makes sense to me, but I could, of course, be mistaken.
45:18 I noticed it so many times! And wondered why is that, and if other people had the same impression.
I'm so immensely grateful for this channel! Thank you, sincerely!
Finally. 😂 Appreciate your work. Just wish there could be more. Felt like such a long wait!
now, wait a minute. Now! lol
Your videos are like therapy to me 😀 Please keep them at least one hour long.
Another great video by arguably one of the best educational channels on UA-cam!
Arguably? Care to elaborate 😂😜😉
@@donnyjeppI mean, there's History of the Earth and History of Mankind, both solid contenders!
THANK YOU! Your items ALWAS provide "food for thought" in a world in which the mass media offers us ever-shrinking portions of INFORMATION and mental stimulation simply because it is geared towards "dumbing us down!" Look forward to your next project/item. Keep Well!!
Seems like the longest time waiting for this new episode to come out but while watching it time flies by 😀
Your 3 channels are some of my favourites. I always watch them more than once. Just fantastic. Idea for a 4th channel: The Entire History of Civilisation. I’d love your take on it. Or will it be part of your humankind vids.
(Will and Ariel Durants series ‘ The Story of Civilisation’ are my favourite books.)
Probably the best science channel on UA-cam... Excellent!
There it is. I was eagerly waiting and I've postponed my shower session to watch this 😂
That's amazing way of explaining "now" using a pigeon in that way .
The example with a mirror reminded me of de Selby's proposition of an infinite number of facing mirrors that lets you see yourself as a newborn.
My favourite philosopher
OMG.... OMG!!!! I am hyper ventilating!!!!!!! its here its here!!!!! (quickly goes to get a beverage, turn down the lights, and prepare the viewing area for whats sure to be a transcendental view)
This is why I get flustered in my head when people ask me what time it is. In my head, I’m saying “well, it USED to be 13:45:32;05 but now it isn’t anymore. I can check again for an update though”
You can`t give an answer withouth looking at your Watch therefore the Question "what time it is" already asks for a future time which is the time they hear your answer and because time went on after you looked at your watch and comunicated it, it is in the past. So they ask for a future time which is in the past as soon as you tell them the time, i can see why this makes you flustered. The solution is to allways round up since no one asks about seconds anyway.
Jesus Christ, get out of the basement sometime.
Although much of this I knew, I learnt quite a bit. I finally understand why, in that moment I look at a second hand on a clock or digital number of a second, that second seems tangibly longer compared to the consecutive seconds when I continually look at the clock. I thought it was just my weirdness.
That was brilliantly well explained.. Even if NOW isn't what we'd hoped it is.
To everyone here, I implore you with all my heart to check out RUSH's song, "The Garden."
"The future disappears into memory, with only a moment between. Forever dwells in that moment. Hope is what remains to be seen."
I love rush but have never heard that one, what a great song.
Thanks! I am doing that now🙏
Wow ! Such profundity ! Basically ; word salad . A series of words which , when analysed , actually turn out to be meaningless drivel.
Similar to Alan Watts Buddhist shtick ?!
Fantastic work, guys. :)
So very interesting. I would need to watch again a few times.
Some mind-blowing stuff there - excellence continues in this series.
This channel is simply incredible
This is one of the few channels I regularly check for new content.
My absoloute favourite thing on UA-cam.
And this episode is a mind bender.
Thank you, History of the Universe.❤
I'm so excited... I almost wanted to leave work early for this.
Fascinating!