@SP-qi8ur The recognizable graphics lib used here has earned "reputation" for being used to animate pretty hardcore topics, and then I suddenly spend 10? minutes on the kids video like this waiting for anything interesting =D I meant no value for _me_ , _I_ was "tricked".
@NIGHTDREADED If the attempt to obtain it cause us to pay dearly then we shall not try to obtain for ourselves. We shall simply keep it away from the universe entirely!
I love how these addendums like “This is not some philosophical saying; this is an actual measurable, experimentally verifiable result” make the underlying physics even more profound.
Indeed. The mispronunciations of (many) words kind of turn me off a little bit, but that is compensated by (besides subtitles) the narrator's correct and complete understanding of the subject matter, his clear and neutral/grave style of narration (no idiotically joyful RUclipsrish style) appropriate for such a fascinating, grave topic. The beautifully dark-themed minimalist visuals also add to the video's beauty and enjoyability. I was absolutely hooked till the end.
- So why were you late again? - You see, the universe itself don't like us stressing too much about time, so unless you want a black hole it's better you forget it
"The universe prevents us from measuring time perfectly, by destroying the clock that attempts to do so. ... Perfect time was never offered. The universe keeps it for itself."
This video was incredible! Not only did I learn something new, but I also felt that wonderful existential shiver when you realize something is so much bigger than yourself
Thank you for that well presented discussion of time itself. Your narration was clear and well paced, and the whole video was extremely well organized. No hype, no suspense, just well stated, factual data. It was a breath of fresh air, even among scientific RUclips videos.
The Algorithm seems to be very good these days at showing me exactly the kinds of content I enjoy, regardless of their viral status! Looking forward to more good stuff!
I watch science RUclips videos all day long. This one is VERY lucid and clear. It shows off the profundity of the concepts like a faceted jewel. Great job.
Outstanding work, I used to make science TV for a living and this is top quality stuff. Beautiful animations each serving to reinforce the point being made, well structured narrative throughout, and a really precise (ha) command of language. You hit so many essential qualities of making good videos that others overlook: (a) Show, don't tell - you don't say something is amazing, you demonstrate it and let the viewer conclude. (b) Content is king - make sure you've something worth explaining, as viewers will sense the fluff if you've nothing to say or overlabour a point. (c) Bookend the work/don't bury the lede - make your point up front, discuss the background, and sum up neatly. Bonus points if you can make people think of further consequences at the end, as you did. (d) Don't forget the humans - tie what's being discussed to people's lives. Doesn't take much, as you demonstrated. You should be very proud of your work. Well done.
Great start to a new channel. You have me hooked simply because you present the thought provoking mind warping idea in such a nice way. Looking forward to the future of this channel and you Senan!
@AndrianTimeswift if you know how to build a perfect clock, then you can build multiple. You build multiple and let them run. If they are perfect they will never get out of sync. But if they aren’t, one day they all will be out of sync. Now, which of your perfect clocks is the correct one? None. Because otherwise they would never have gotten out of sync in the first place. That is what I mean with “You don’t need a perfect clock. Only two that disagree.” Admittedly I should have been more clear from the start, my bad.
@yandereyan4990 It's certainly possible to tell how much two clocks drift from one another, but the problem of figuring out how the drift occurred is the tricky part. When we say that a clock drifts one second per unit time (day, year, century, etc), what are we comparing that drift to? Other clocks of the same type which have stayed in nearly the same location for the same amount of time since synchronization? But then how do we decide which type of clock is the more accurate between types of clock? Or are we just comparing the rates of drift between general clock types, and not individual clocks? If two clocks of the same type were very good at varying by the same amount in the same direction compared to a hypothetical perfect clock, they would appear to be more accurate than they are, if all we're doing is comparing one type of clock to others of the same type. In fact, it wouldn't be hard to set up a system which is designed to do just that by simply taking, say, a design for a cesium clock and inserting a system which counts the number of "ticks" and, after a certain number of such ticks, fails to add one of them to the count displayed to the end-user. The result would be that two such modified clocks would drift at the same rate as any other two cesium clocks, but the modified clocks would drift further from other cesium clocks. In a black-box scenario where an observer couldn't take the devices apart to find the trickery, it would be impossible to decide which of the clocks was the modified version. The reason I bring this up is that we have this same problem with any new proposed method of keeping time. Say we find some kind of natural oscillator that we could use as a clock, which I'll label as X. If clocks based on X drift less from each other than they do from clocks based on cesium, then they must be more accurate, right? But what if those X-clocks drift more from cesium clocks than cesium clocks drift from each other? At that point, it seems that we cannot decide which is more correct, any more than we can decide whether a cesium clock at sea level is more correct than a cesium clock at an altitude of 2000 km above sea level. For that matter, synchronizing two clocks is just as difficult a problem, since no two clocks can be in the same place at the same time, and even if you could, as soon as you move one of them, they desynchronize. Any method you use to synchronize clocks which are not in the exact same spot will have to propagate a signal of some kind at the speed of light or slower, and since we have no way of measuring the one-way speed of light without distant synchronized clocks, we find ourselves in a bootstrapping problem where you need a clock to measure the speed of the thing by which you're setting the clock. We can only measure the two-way speed of light because you can do that with a single clock, which will, of course, be perfectly synchronized with itself. In summary, we can only know how accurate any particular clock is relative to some other clock, whether of the same type or a different type. Without a perfect clock to compare all other clocks to, we really can't say that any one clock is more accurate than any other clock is - only how much one type of clock drifts from any other similar clock under similar conditions. And even if we had a perfect clock, we wouldn't be able to identify it by virtue of all clocks being relative to one another. And even if we had two perfect clocks, we could never perfectly synchronize them thanks to relativity.
Something that could be explored more deeply could be what could be achieved theoretically if we were able to create a perfect clock and bypass the issue of the black hole.
I just subscribed after seeing this video. I'm sad to see you haven't produced many more videos. More please! More, more, more! I love physics; I rarely understand it - but somehow it nourishes my brain. You have a knack for chipping at that wall in my brain that prevents me from really grasping the concepts.
I really appreciate it, more videos are underway. I have a detailed explanation in the community tab, if time please read it for the slow production of videos. :)
Relatively actually teaches that time flies the same for all observers. It in only relative observers that *appear* to travel through time at a different rate.
This is probably the most relaxing and comfortable science video I have ever watched! This was 10 out of 10! :) Keep making videos, and I'll keep watching!
Once I was at an airport waiting for a flight I would take at dawn. With nothing better to do I looked at the columns at each about 5m there was a clock on them. I though if light speed was slower and slower I would see each one at a different time. It is not an uncommon thought for physicists when they think at Special Relativity. And then I remembered The Adventures of Mr. Tompkins book from George Gamow hew shows situations similar to those. The speed of your visual processing at occipital lobe matters too: you see (pun intended) your eye is so sensitive that it can "see" thermal noise firing the neurons. To avoid that it integrated for a time the signal before "seeing" it. It takes a longer time integral when it is dark as signal to noise ratio is higher. If you put a dark glass or lens over one eye and look at a pendulum: perpendicular to your eyesight line the eye with the dark lens will take more time to have its image processed (it is more complicated than that because of the optical chiasm that mixes left of right depending on the side and center /peripheral visual field but bear with me) and this eye information will be processed by the cognitive part of yuur brain with a delay; this will make you "see" the pendulum oscillation not on a plane but an ellipse appearing to be farther oscillation to one side and near to the other (depending in which eye the dark glass is). This is called Pulfritch effect.
nah but because the black hole is doing nothing (not indicating that any time has passed) the clock still works because since gravity is effectively infinite in the singularity of the black hole, the original point from which we wanted to measure the time of, this means that the time would have also stopped at that point due to relativity, and so the clock is still perfectly accurate
Black holes DO measure time because they evaporate from hawking radiation at a predictable rate based on their mass. Over the longest time frames they are the best clock.
What an absolutely fantastic video! I've never watched a physics video so peaceful and meditative before. Even though I may be already familiar with most of the material to some extent, this video was still a treat to watch. You earned yourself a new subscriber!
"for small oscillations" is a tradition in physics: we run from elliptical integrals to fall on a simple harmonic oscillator. As the drunk that was searching the keys under the lamp post because there was more light we take nay potential well and approximate by a parabola falling back to our well known simple harmonic oscillator. When it fails we backtrack, and it works much more times than you would think. It is like approximating a horse by an sphere and adding perturbations.
From what i could understand as a layperson, being still near a massive object is equivalent to being in motion against the gravity field (since gravity bends spacetime in a way that bends the future in direction to the center of gravity, which makes being "still" actually move against your future, thus slowing down time). This just made me think of the question whether time still slows down for you if you're in freefall
This is a good question, I'm curious too. I know the answer is that it does still run slower because being in orbit is identical to being in freefall, but I don't know why.
@johncasey9544 is it really identical in this case? as in freefall you approach the massive object, but in orbit you don't. This way you still move against the direction of gravity while in orbit
I think something thats worth explaining is that time speeding up in the clocks on satellites is only relative to us down here. They tick at the same rate ftom their perspective up there.
There is a much stranger participant to use: millisecond pulsars. If I'm not mistaken, despite them being physical objects, their huge moments of inertia stabilize their rotation rates (this doesn't apply to young pulsars, which bleed more energy because they're immensely hot). The main drawback is their motion relative to Earth, both due to Earth's orbit around the sun, and orbits around the Milky Way's center.
this reminds me of a pbs spacetime video about how the universe almost seems to be "hiding" gravitons from us at a certain point it makes you think "why is the universe hiding" is a more interesting question
Bravo, bravo. One of my favorite pastimes is going through the comment sections looking for people who swear they are super special and have solved the problem but these comments are full of nothing but praise! And I see why. Excellent delivery of these concepts.
Very nice video, its lucky to find this channel this early, the quarzt clock part migth be bit misleading as ı know quarzt does not create vibrations on its own or presence of a dc current it just kinda rings when a pulse of voltage is applied and kind a acts like lc circuit and its frequency is detemined by its shape and size (the frequency you are showing in the video is only for quarzt watches other electronicmmostly use much higher frequencies at Mhz range)its just like a tuning fork, same mechanical vibrations but higher frequency, its not affects the overall video concept but xtal oscillators are often the most mystic component in electronics and just want to point out they are just like any other vibrating object only key differance is they directly responce and create electric signals
amazing food for thoughts, but his voice sending me to sleep in the very first nano-seconds 💤💤 I needed coffee refill and ambition to watching it few times, great video! 💫
0:07 Just seeing the wall 10 feet away takes about 10 nanoseconds for the photons to reach your eye. Even without the 30 milliseconds or so of brain processing required to perceive and interpret those photons, you're seeing the wall as it was in the past. This is true for _all_ matter-energy interactions.
You can theoretically have “perfect” synchronicity within arbitrary accuracy, usually directly dependent on frequency. Imagine a long coax cable with an adjustable phase shifter at each end and with a fine-tunable oscillator beyond both phase shifters. Firstly, the oscillators are coupled such that both oscillate with the frequency of the other. The cable itself is important. The length of the cable should be an exact multiple of the wavelength such that anti-nodes form at each end in a standing wave. Of course the exact length of a long cable can vary with temperature and mechanical tension - this is why you have phase shifters at each end. They act like fine-tuned cable length adjusters. By adjusting the delay such that the current and the voltage stay exactly in phase at the end of the phase shifters so the ends remain antinodes regardless of slight variations in cable length. Such a synchronous system is so stable it can be used to even measure variations in local gravity due to the time dilation effect higher gravity field areas have. For all practical telecommunication purposes, we don’t really need synchronous systems beyond this. But… we were still able to achieve synchronicity beyond this in gravitational wave detectors. We’re talking using light to measure changes in distance on the scale of a fraction of the width of a proton.
LOL, no. This comment could only come from someone who doesn't understand the way in which space and time become inverted within the event horizon. (In other words anyone who didn't do post undergrad physics). When falling into a black hole the singularity is not your destination but your future - and all paths lead to it, but some more quickly than others. Anyway, I digress. When a black hole is predicted, it means that we can't probe from the outside - and people who don't have a high level understanding should never try to read deeper than that or they will be wrong in one or more ways.
@Anthony@AnthonyNolan-w5uude, i just watched a veritasium (or kurtz, i don't remember) video in which they literally say "it's almost as if the event horizon is protecting us from the singularity" so if you want to argue i can direct you to their videos because personally i don't care enough to be lectured by "aKsHuAlLy" people in yt comment section edit: "people should never try..." lmao, bro i do what tf i want, you can go cry to your teacher
my teacher when dismissing us 50 minutes late
3b1b's animation library is a gift to humanity and so is this video
so true
Crap, now the stuff like this video initially looks like it has some value. Not trusting the videos made with this library anymore lol
@syrslava705 wym? You don’t think it has value?
@SP-qi8ur The recognizable graphics lib used here has earned "reputation" for being used to animate pretty hardcore topics, and then I suddenly spend 10? minutes on the kids video like this waiting for anything interesting =D I meant no value for _me_ , _I_ was "tricked".
"Perfect time was never offered. The universe keeps it for itself."
Sir, if you want to write metal lyrics, you're hired.
"And what the universe keeps for itself, will the attempt to obtain it pay for dearly."
yes, please! epic melodic metal with some math metal allusions and lyrics about physics and maths
6:50 He's already teasing us with the song title
("Chapter 3" is part of the title by the way, this is a 17-minute prog epic)
@NIGHTDREADED
If the attempt to obtain it cause us to pay dearly then we shall not try to obtain for ourselves.
We shall simply keep it away from the universe entirely!
Fabloo
Watching this video was time well spent
I will not be discouraged from making clocks.
I never wanted perfection.
@bicyclesonthemoon
🗣🔥🔥🔥
✅✅✅✅🔥🔥🔥🔥
The approach of perfection shall suffice.
I love how these addendums like “This is not some philosophical saying; this is an actual measurable, experimentally verifiable result” make the underlying physics even more profound.
This guy could read bedtime stories
sarrr let me read you bedtime story sarrrr
Everybody get down this mujeet about to explode 🎉🎉@botjar-qr6xe
@botjar-qr6xe lmao, but I must forgive his Bad English because the video's content is really good and fascinating, after all
@botjar-qr6xe😂 tbf his accent is soothing
@bytekast a few grammar errors does not equal "bad English".
Man, this advanced timekeeping is so confusing. I'm going back to counting the phases of the moon as God intended.
This script is clean asf, incredible storytelling
Indeed. The mispronunciations of (many) words kind of turn me off a little bit, but that is compensated by (besides subtitles) the narrator's correct and complete understanding of the subject matter, his clear and neutral/grave style of narration (no idiotically joyful RUclipsrish style) appropriate for such a fascinating, grave topic. The beautifully dark-themed minimalist visuals also add to the video's beauty and enjoyability. I was absolutely hooked till the end.
- So why were you late again?
- You see, the universe itself don't like us stressing too much about time, so unless you want a black hole it's better you forget it
dang this is wild HAHAHAHA now let's try it to our professor when we incidentally attend class late
"You're fired"
@dustinnabil798 "So, early lunch break and Spaghetti. Got it"
"The universe prevents us from measuring time perfectly, by destroying the clock that attempts to do so. ... Perfect time was never offered. The universe keeps it for itself."
🔥✍
6:25 "Ah, I knew there was something Kurzgesagt-y about this existentialism disguised as math..."
4:18. “When it gets cold, the rod shrinks.”
Learned this from Seinfeld.
Learn this from my mirror.
I WAS IN THE POOL!!
Learned this from read dead redemption 2's horses
THE WATAH WAS COOOOLD
Horses.
Red Dead Redemption 2.
The older I get the less patience I have for the fundamentally unserious nature of physics.
On the contrary, I find it more fascinating. It's fundamentally beautiful and I think we do see echoes of those other 6 dimensions too.
Yes. I agree. To both of these reflections.
What a video! I learnt physics, mathematics, philosophy, morality and many more in one go. 🙏
Glad you enjoyed it!
Morality? Where did the morality come in?
@vorpal22 shorter people age slower
@occultsupport No, shorter people have their head age slower. Your fet will still age at same rate at the same lattitude from Earth.
@occultsupport😂
It's either time to get a watch, or time to duel. I wouldn't know since the clock says I'm perfectly late on time before I need to be.
This is extremely informative, but your voice is so chill, I’ll most likely listen while going to sleep.
Beautiful script and animation. I love the last two lines, "Perfect time was never offered. The universe keeps it for itself." Subscribed.
Loved that and started thinking it does, literally, as on the universe scale it's rotation is the period to measure all things by.
The animation is the same as used by 3Blue1Brown. It's a Python library called Manim.
"When it gets cold, the rod shrinks." True words, my friend.
1. maybe the waves flowing animation
2. piezoelectric effect
3. more precise clocks require more energy to function
This video was incredible! Not only did I learn something new, but I also felt that wonderful existential shiver when you realize something is so much bigger than yourself
Thanks a lot Charlie for appreciating my work.
It really means a lot!!!
Where has this channel been?
I know it just started and I’m so glad I caught the train on TIME
Thank you for that well presented discussion of time itself. Your narration was clear and well paced, and the whole video was extremely well organized. No hype, no suspense, just well stated, factual data. It was a breath of fresh air, even among scientific RUclips videos.
"The universe prevents us from measuring time perfectly; by destroying the clock that attempts to do so"
absolute cinema
DO NOT REDEEM TIME
entropy is so humbling...
I had to play this back at double time to save time
Very well done Senan. An excellent presentation, clear, comprehensive and well paced. Also, enjoyable for nerds like me. ;)
Ooh I do love finding a promising channel in its very early days, subscribed
The Algorithm seems to be very good these days at showing me exactly the kinds of content I enjoy, regardless of their viral status! Looking forward to more good stuff!
So true
This was an extraordinary video. Thank you so much
Thanks a lot! Make sure to watch my next upcoming video, it is at least 100 times better than this one.
Im counting the ticks on my piezoelectric optical molasses pendulum till the release time
I watch science RUclips videos all day long. This one is VERY lucid and clear. It shows off the profundity of the concepts like a faceted jewel. Great job.
Thanks a lot 😊
Outstanding work, I used to make science TV for a living and this is top quality stuff. Beautiful animations each serving to reinforce the point being made, well structured narrative throughout, and a really precise (ha) command of language. You hit so many essential qualities of making good videos that others overlook:
(a) Show, don't tell - you don't say something is amazing, you demonstrate it and let the viewer conclude.
(b) Content is king - make sure you've something worth explaining, as viewers will sense the fluff if you've nothing to say or overlabour a point.
(c) Bookend the work/don't bury the lede - make your point up front, discuss the background, and sum up neatly. Bonus points if you can make people think of further consequences at the end, as you did.
(d) Don't forget the humans - tie what's being discussed to people's lives. Doesn't take much, as you demonstrated.
You should be very proud of your work. Well done.
Beautifully summarised, I'll keep coming back to this as a reference for future videos. Thanks a lot!
Decrapify your content for RUclipsrs 101 ---^
This vid is incredible! So keen for more
Absolutely fabulous. Crystal clear and a very engaging narrative.
"Time is contextual and localized" kinda broke me after seeing the math laid out so plainly. You really shifted my perspective on reality. Bravo!
I don't think I'll be sleeping tonight with this information stuck in my head.
Great start to a new channel. You have me hooked simply because you present the thought provoking mind warping idea in such a nice way. Looking forward to the future of this channel and you Senan!
I'm wondering how we can know that a clock is not perfectly precise without a perfect clock to compare it to.
You don’t need a perfect clock to know yours isn’t perfect; you only need two that disagree.
@yandereyan4990 Well, that only tells you that at least one of the clocks isn't perfect. It doesn't even tell you which is more accurate.
@AndrianTimeswift if you know how to build a perfect clock, then you can build multiple. You build multiple and let them run. If they are perfect they will never get out of sync. But if they aren’t, one day they all will be out of sync. Now, which of your perfect clocks is the correct one? None. Because otherwise they would never have gotten out of sync in the first place. That is what I mean with “You don’t need a perfect clock. Only two that disagree.”
Admittedly I should have been more clear from the start, my bad.
@yandereyan4990 It's certainly possible to tell how much two clocks drift from one another, but the problem of figuring out how the drift occurred is the tricky part. When we say that a clock drifts one second per unit time (day, year, century, etc), what are we comparing that drift to? Other clocks of the same type which have stayed in nearly the same location for the same amount of time since synchronization? But then how do we decide which type of clock is the more accurate between types of clock? Or are we just comparing the rates of drift between general clock types, and not individual clocks?
If two clocks of the same type were very good at varying by the same amount in the same direction compared to a hypothetical perfect clock, they would appear to be more accurate than they are, if all we're doing is comparing one type of clock to others of the same type. In fact, it wouldn't be hard to set up a system which is designed to do just that by simply taking, say, a design for a cesium clock and inserting a system which counts the number of "ticks" and, after a certain number of such ticks, fails to add one of them to the count displayed to the end-user. The result would be that two such modified clocks would drift at the same rate as any other two cesium clocks, but the modified clocks would drift further from other cesium clocks. In a black-box scenario where an observer couldn't take the devices apart to find the trickery, it would be impossible to decide which of the clocks was the modified version.
The reason I bring this up is that we have this same problem with any new proposed method of keeping time. Say we find some kind of natural oscillator that we could use as a clock, which I'll label as X. If clocks based on X drift less from each other than they do from clocks based on cesium, then they must be more accurate, right? But what if those X-clocks drift more from cesium clocks than cesium clocks drift from each other? At that point, it seems that we cannot decide which is more correct, any more than we can decide whether a cesium clock at sea level is more correct than a cesium clock at an altitude of 2000 km above sea level.
For that matter, synchronizing two clocks is just as difficult a problem, since no two clocks can be in the same place at the same time, and even if you could, as soon as you move one of them, they desynchronize. Any method you use to synchronize clocks which are not in the exact same spot will have to propagate a signal of some kind at the speed of light or slower, and since we have no way of measuring the one-way speed of light without distant synchronized clocks, we find ourselves in a bootstrapping problem where you need a clock to measure the speed of the thing by which you're setting the clock. We can only measure the two-way speed of light because you can do that with a single clock, which will, of course, be perfectly synchronized with itself.
In summary, we can only know how accurate any particular clock is relative to some other clock, whether of the same type or a different type. Without a perfect clock to compare all other clocks to, we really can't say that any one clock is more accurate than any other clock is - only how much one type of clock drifts from any other similar clock under similar conditions. And even if we had a perfect clock, we wouldn't be able to identify it by virtue of all clocks being relative to one another. And even if we had two perfect clocks, we could never perfectly synchronize them thanks to relativity.
Maybe it's possible that a perfect clock exists, you just can't identify it.
Cool video! Nice graphics
Woah! Thanks a lot.
p.s I have spent my teenage years watching your videos.
What a great and thorough video
Something that could be explored more deeply could be what could be achieved theoretically if we were able to create a perfect clock and bypass the issue of the black hole.
I just subscribed after seeing this video. I'm sad to see you haven't produced many more videos. More please! More, more, more! I love physics; I rarely understand it - but somehow it nourishes my brain. You have a knack for chipping at that wall in my brain that prevents me from really grasping the concepts.
I really appreciate it, more videos are underway. I have a detailed explanation in the community tab, if time please read it for the slow production of videos.
:)
I'm glad that I stumbled on this awesome channel with satisfying motion graphic, slow pace explanation, and deep knowledge
Relatively actually teaches that time flies the same for all observers. It in only relative observers that *appear* to travel through time at a different rate.
And now I have another existential crisis.
This is probably the most relaxing and comfortable science video I have ever watched! This was 10 out of 10! :)
Keep making videos, and I'll keep watching!
Beautiful message combined with beautiful visualization. Thank you. Now I'm going to bed a bit more calm, worrying a bit less about tomorrow.
Beautiful video. Had to watch it twice. Terrifying yet fascinating.
A surprisingly fascinating subject, well told!
Thanks a lot :)
Once I was at an airport waiting for a flight I would take at dawn. With nothing better to do I looked at the columns at each about 5m there was a clock on them. I though if light speed was slower and slower I would see each one at a different time. It is not an uncommon thought for physicists when they think at Special Relativity. And then I remembered The Adventures of Mr. Tompkins book from George Gamow hew shows situations similar to those.
The speed of your visual processing at occipital lobe matters too: you see (pun intended) your eye is so sensitive that it can "see" thermal noise firing the neurons. To avoid that it integrated for a time the signal before "seeing" it. It takes a longer time integral when it is dark as signal to noise ratio is higher. If you put a dark glass or lens over one eye and look at a pendulum: perpendicular to your eyesight line the eye with the dark lens will take more time to have its image processed (it is more complicated than that because of the optical chiasm that mixes left of right depending on the side and center /peripheral visual field but bear with me) and this eye information will be processed by the cognitive part of yuur brain with a delay; this will make you "see" the pendulum oscillation not on a plane but an ellipse appearing to be farther oscillation to one side and near to the other (depending in which eye the dark glass is). This is called Pulfritch effect.
This was both terrifying and beautiful. Instant subscribe
Such a well made video. Subscribed instantaneously. We need more!
More is on it's way. Process of making is slow but it has not stopped. :)
Somehow, I don't think I could offer this video to my boss as an excuse if I'm late to a meeting. :)
Staring into the pendulum long enough he understood time.
Hypnosis uses same practice to alter an obervors sense of time with their swinging trance.
nah but because the black hole is doing nothing (not indicating that any time has passed) the clock still works because since gravity is effectively infinite in the singularity of the black hole, the original point from which we wanted to measure the time of, this means that the time would have also stopped at that point due to relativity, and so the clock is still perfectly accurate
Black holes DO measure time because they evaporate from hawking radiation at a predictable rate based on their mass. Over the longest time frames they are the best clock.
I didn't See a nice Video like this for ages,
nice explanation man, subscribed.
Thanks a lot!!!
You have quite a soothing voice. I almost fell asleep. Love the video. You brought complex ideas into a concise explanation.
Thanks a lot !!!
:)
What an absolutely fantastic video! I've never watched a physics video so peaceful and meditative before. Even though I may be already familiar with most of the material to some extent, this video was still a treat to watch. You earned yourself a new subscriber!
The universe is very kind.
Great video!! Very interesting, loved the clean visual style and the calm bedtime voice
"for small oscillations" is a tradition in physics: we run from elliptical integrals to fall on a simple harmonic oscillator. As the drunk that was searching the keys under the lamp post because there was more light we take nay potential well and approximate by a parabola falling back to our well known simple harmonic oscillator. When it fails we backtrack, and it works much more times than you would think. It is like approximating a horse by an sphere and adding perturbations.
From what i could understand as a layperson, being still near a massive object is equivalent to being in motion against the gravity field (since gravity bends spacetime in a way that bends the future in direction to the center of gravity, which makes being "still" actually move against your future, thus slowing down time).
This just made me think of the question whether time still slows down for you if you're in freefall
This is a good question, I'm curious too. I know the answer is that it does still run slower because being in orbit is identical to being in freefall, but I don't know why.
@johncasey9544 is it really identical in this case? as in freefall you approach the massive object, but in orbit you don't. This way you still move against the direction of gravity while in orbit
That was a disappointing conclusion for my OCD
Something I read related to this: Black holes, even if you could somehow escape the gravity it would not matter because the universe would be over.
this makes me think of the Discworld novel "Thief of Time", where a magical clock STOPPED TIME.
You have a very poetic narration!
Wow!!! Really good video :)
Thanks a lot!
p.s. Is your name really Patrick Jane or a Mentalist reference 😁
@theoriginalsenan haha, that would be cool. Yeah, I am a huge Mentalist fan 😇. That's why I chose the name. You like the series too?
Watched it twice!! 😂
@theoriginalsenan yes, me too ... I started to rewatch it 2 weeks ago 😂
I am in awe of this channel, and very much hope its subscriber count inflates a thousandfold even as it calmly unravels the universe for me.
I think something thats worth explaining is that time speeding up in the clocks on satellites is only relative to us down here. They tick at the same rate ftom their perspective up there.
muy buen video muy entretenido deberias hacer otro
0:01 OMG I HAVE SAME COW SLIPPERS THATS SUPER COOL!
This brings to mind the Glass Clock of Discworld (Sir Terry Pratchett)
There is a much stranger participant to use: millisecond pulsars. If I'm not mistaken, despite them being physical objects, their huge moments of inertia stabilize their rotation rates (this doesn't apply to young pulsars, which bleed more energy because they're immensely hot). The main drawback is their motion relative to Earth, both due to Earth's orbit around the sun, and orbits around the Milky Way's center.
Only two videos and already this is the most relaxing science channel I've come across. More so than SEA and The Entire History of the Universe!
The deepest innerworkings thereof are simply amazing.
Dude, that was an awesome video. Can't wait for your next video to drop. Wishing you success with this channel. Much love from Bengaluru.
this reminds me of a pbs spacetime video about how the universe almost seems to be "hiding" gravitons from us
at a certain point it makes you think "why is the universe hiding" is a more interesting question
The Universe does not owe you any comfort, does not owe you any narrative you may like, does not owe you anything.
@hughobyrne2588 the question still makes sense if you don't personify the universe
@subpixelalloy10 If you don't personify the universe, then there being a motivation behind a wilful act of hiding doesn't make sense.
Great video - subscribed.
Bravo, bravo. One of my favorite pastimes is going through the comment sections looking for people who swear they are super special and have solved the problem but these comments are full of nothing but praise! And I see why. Excellent delivery of these concepts.
This is good! Looking forward to seeing your channel grow
All this couldn't stop Gandalf from arriving precisely when he means to.
LOTR reference is new to me 😂
What a fantastic video!! I hope there will be more from this channel.
Very nice video, its lucky to find this channel this early, the quarzt clock part migth be bit misleading as ı know quarzt does not create vibrations on its own or presence of a dc current it just kinda rings when a pulse of voltage is applied and kind a acts like lc circuit and its frequency is detemined by its shape and size (the frequency you are showing in the video is only for quarzt watches other electronicmmostly use much higher frequencies at Mhz range)its just like a tuning fork, same mechanical vibrations but higher frequency, its not affects the overall video concept but xtal oscillators are often the most mystic component in electronics and just want to point out they are just like any other vibrating object only key differance is they directly responce and create electric signals
Scienceclic level work. awesome !
Beautiful, hidden gem
Terry Pratchett Thief of Time vibes intensify
This was fascinating. Thanks.
The universe is just one giant middle finger to physicists and mathematicians.
this is the most gangster thing ive seen all week
Great vid! Glad I got the recommendation, hope your sub count corresponds more accurately to your content’s quality soon 😁
Thanks a lot
Thank you for this wonderful, enjoyable and very calming video.
amazing food for thoughts, but his voice sending me to sleep in the very first nano-seconds 💤💤 I needed coffee refill and ambition to watching it few times, great video! 💫
0:07 Just seeing the wall 10 feet away takes about 10 nanoseconds for the photons to reach your eye. Even without the 30 milliseconds or so of brain processing required to perceive and interpret those photons, you're seeing the wall as it was in the past. This is true for _all_ matter-energy interactions.
Chill video bro, subbed
This video is beautifully made!
You can theoretically have “perfect” synchronicity within arbitrary accuracy, usually directly dependent on frequency.
Imagine a long coax cable with an adjustable phase shifter at each end and with a fine-tunable oscillator beyond both phase shifters.
Firstly, the oscillators are coupled such that both oscillate with the frequency of the other.
The cable itself is important. The length of the cable should be an exact multiple of the wavelength such that anti-nodes form at each end in a standing wave.
Of course the exact length of a long cable can vary with temperature and mechanical tension - this is why you have phase shifters at each end. They act like fine-tuned cable length adjusters. By adjusting the delay such that the current and the voltage stay exactly in phase at the end of the phase shifters so the ends remain antinodes regardless of slight variations in cable length.
Such a synchronous system is so stable it can be used to even measure variations in local gravity due to the time dilation effect higher gravity field areas have.
For all practical telecommunication purposes, we don’t really need synchronous systems beyond this. But… we were still able to achieve synchronicity beyond this in gravitational wave detectors. We’re talking using light to measure changes in distance on the scale of a fraction of the width of a proton.
Wonderful narration. Subscribed.
singularity has precise time, but it's guarded by the event horizon
LOL, no. This comment could only come from someone who doesn't understand the way in which space and time become inverted within the event horizon. (In other words anyone who didn't do post undergrad physics). When falling into a black hole the singularity is not your destination but your future - and all paths lead to it, but some more quickly than others.
Anyway, I digress.
When a black hole is predicted, it means that we can't probe from the outside - and people who don't have a high level understanding should never try to read deeper than that or they will be wrong in one or more ways.
@Anthony@AnthonyNolan-w5uude, i just watched a veritasium (or kurtz, i don't remember) video in which they literally say "it's almost as if the event horizon is protecting us from the singularity"
so if you want to argue i can direct you to their videos because personally i don't care enough to be lectured by "aKsHuAlLy" people in yt comment section
edit: "people should never try..." lmao, bro i do what tf i want, you can go cry to your teacher
Absolutely incredible video, worth every (inaccurately measured) second!
so this is how we communicate now to say and show the time