Is time travel possible? - Colin Stuart
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- Опубліковано 20 жов 2013
- View full lesson: ed.ted.com/lessons/time-travel...
Time travel is a staple of science fiction stories, but is it actually possible? It turns out nature does allow a way of bending time, an exciting possibility suggested by Albert Einstein when he discovered special relativity over one hundred years ago. Colin Stuart imagines where (or, when) this fascinating phenomenon, time dilation, may one day take us.
Lesson by Colin Stuart, animation by TED-Ed.
Actually, right now we are time traveling to the future at the rate of one second per second
Haha ahaha
Haha , 😅 but true!
correct and true indeed :D.
Great discovery
Second per 401.5 days to be exact 😆
The question is
If we can go to the future
How can we go back to the past
Since return by the speed of light will make us go further to the future
@@Cohle_rust_03 how in the world are we supposed to understand that
actually might be possible due to quantum mechanics
we could use exotic matter which has negative mass. and since e=mc^2, we could convert exotic matter into negative energy, making negative speed if applied to object
i dont really know lol im just guessing
@@Cohle_rust_03 so you are from like (past)pre-covid? 😂
May be we can't come back. Time travel isn't that fancy😂
you just wait there until the people from the past reaches the future.
I want to travel but I don't have time....
If you dont have time, means you cant life
Just like stoping the time :
-the light cant enter your eyes(u blind)
-no air
Omg honey
i'll time you, but i don't know where you are....
schroedingers hesus?
XD
I just wanna be a kid again 😔 swear i had the best time of my life back then.
I concur friend. I concur. you only understand what people meant by life goes by fast when you're older.
@@jaredgarbo3679 Air travel was once impossible but look at it now we've even gone beyond it to space , i'm sure in couple hundred years from now nothing would be impossible
genetics engineering
It is possible, it has always been possible
i just want to be unexist 😔
Time dilation and time travel are not the same thing. Time dilation is real and that basically means that the RATE that time is experienced within a reference frame can be changed by simply traveling at a higher velocity. Time travel suggests that it's possible to instantly "jump" to any point in time in the past or future and as far as we understand it's impossible. The problem with the past and the future is that neither exists, the past has given way to the present and the future is yet to unfold.
+dutchrjen I understand exactly how the Lorentz equations work and I was waiting for someone to mention the problem with "simultaneous" events. What I was trying to say is that even though light travels at a certain speed, past events are not preserved in the universe in a way that we could "rewind" the tape and revisit them. A record is kept through light waves and spacial distance, sure, but those are only photons. I'm also leaving out any wormhole theories and multiverse theories.
Also, we consider the inertial reference frame to be the "correct" frame.
+openSUSE5 and yet this is considered worthy of a TED video. talk about low standards. I was expecting anything BUT time dilation. I thought it would be a brief mention in the beginning of the video, and that they would go on to talk about quantum particles or something.
maybe the past ,present , and future all exists at the same time . Imagine someone travels so fast that his time goes faster than ours by a day . The "now "he sees will be our tomorrow or "future " what we consider as our now will be already in his past . but what he saw in his past is in our present , and what he sees now is in our future , then they all happens simultaneously
+openSUSE5 time travel does not suggest jump, some cifi shows do
+Somerandomdude4.2526 yeah I get your point
He wastes 803 days to go 0.02 seconds in future! Clever!
Hahaha
the opposite
robin van Sint Annaland No it ist.
A cookie for this man.
+Burak Çalık wait isn't it the opposite?
I’d love to time travel to the past. Time traveling to the future however, doesn’t really interest me. I’m only 17 so it would be a little scary going in the future. I like not knowing what ill end up like. I always dreamed about going back in time and meeting my mom or dad when they were my age. My mom tells me she would be my friend if I existed when she did back then :)
That's with Avengers Endgame Time Travel rules, right? cause with any other time travel rules you'd cause your world to turn into a dystopia just by stepping on a butterfly. (Listen to "Butterfly" by Kirsten Maxwell, my half-sister)
@@justaperson4423 watch the movie "the butterfly effect" with aston kutcher, disturbing or what. although the phrase is older, i think ray bradbury popularised the idea with his dinosaur hunt story, where the guys return to their "present" only to find everyone is nazis, or summit.
Actually, all you have to do to travel into the past is just to surpass the speed of light.
That’s why most physicists don’t believe faster-than-light travel is possible.
And be aware of one thing: even if you can meet your mother in the past, it’s extremely unlikely that this girl will actually become your mother! ☝️🤓
Despite what time-travel stories tell you, it would be impossible to not change things.
This reminds me of dark series
In my mind that would break the universe. Imagine your mom noticed you and talked to you. It’ll create a ripple effect that will change the timeline more and more until you probably don’t exist in the normal timeline. my brain hurts
Time travel becomes possible and went to the past.
People from 1970s: I want to see the world 50 years later.
Me: bruh, Why would you go to 2020?
Ha lol
Glad it made you laugh what a silly joke
@Sanmomoring Bruh
Saying bruh is normie
this entire thread is the epitome of chaos
who else is watching in 2087
im watching 2148
+jo jones is earth a pill of ashes or have we found an alternative to fossil fuels
i dont know ive never lived on earth only gama 4
btw in this time can you still see the flashing light around my youtube comment
also whenever you are im already then
Only being alive in 2148 to know if UA-cam still exists or not. :V
youtube still exists just a lot of old videos where removed hence time travel 1985 was the peak of all human entertainment
Watching in 2046. Earth has basically turned into a big smoking ball of shit.
+Jim James and we lost the tech to travel to other planets lol
+Jim James So, did Donald Trump become the President?
Md. Abdul Ahad Chowdhury Unfortunately, yes..
PrankGamings x either he gets killed or dies of age
PrankGamings x Illuminati sacrifice ... obviously... lol
Ted ed:Is time travel possible?
Tony Stark:Hold my beer
ISnt he DeAd ?
your Kool-Aid, maybe
Ant man : that's my tech
Barry Allen: Hold on a second
What about Wolverine? 😂
The Past is History
The Future is a Mystery
The time we are living now is a gift and that's why we call it the Present.
@@junreydano6441 it was master Oogway who said it not shifu, u uncultured swine
I can time travel
But only to future and at a speed of 60 minutes per hour
Zenan Chen,oii I like to bring you back to this comment because you are now in the future from when you did this comment 3 months ago, we time traveled within a blink of an eye, and thats how time travel works
Zenan Chen beutius
Congrats
I spent 10 seconds trying to wipe your Avatar off my screen thinking it was a hair.
@@LesDuffy das dapoine
Simple, clear and to the point. Enjoyable.
Awesome I wish time travel and back in time I was young then change timeline I mean fixing like prevent hit puberty that I want
I just want to travel back into the past to re-experience what I did, and the bond our family had, especially with those who had passed.
I'm sad that I can't be alive until they will find out what this universe actually is...
It's a trap
No a simulation
No it's a universe
Don't you have to go 88 mph to time travel??
I see what you did there
+Joe Scordino I don't get it. Captain?
+Knight Davion Have you seen Back to the Future?
awww. hahhahaha thanks bro
yes and u must carry plutonium or banana skins.
to me this is just time dilation. not time travel.
Time dilation is the change in perception of time relative to someone or something else. Time travel would be the ability to move back and forth. Sadly this is not possible because "time" doesn't exist, its a perception or measurement. Its an invention created by humans to understand the present. The past and future simply doesn't and never will exist.
David Lawson yees so true thats what i wanted to say the but cant express right in english finally someone with sense
it is time dilation, really.
Illogical logic man u the MVP lit
sam jackson u are MVP lit af
So travelling in the past is still not possible even in the hypothetical situation where we could travel almost at the speed of light?
As far as our current understanding of how time works. Gravity and speed can slow down time. We don't know of anything that makes time go backwards. There are various tricks you can use to skip to the future. But the past is gone forever.
I'm not an expert in any way but the whole traveling as a spectator has me thinking. You know how we can see supernovas and other cosmic events that occurred millions of years ago due to the speed light travels at? If you somehow positioned yourself 200 light years away and had a super accurate telescope and camera, you could technically see what was going on in 1820.
Sabrina Layton No, you would see yourself at that current time in 200 years
@@sam-r7121 if you traveled 200 light years, yes. The way I meant it, you'd see 1820 if you basically teleported 200 light years away. I understand that's impossible. I still think the concept is cool.
@@sabrinalayton2835 lol you all delusional it's all theory its cannot be and never will be possible time traveler
Fascinating video! Time travel is so interesting and I hope that if time travel is released to the public someday it doesn't have any bad consequences such as paradoxes.
Are the people who time travel are real. Please tell.
Why are there alot of time travelers in ur videos anyway... I cant tell if someones faking
time travel won't be availible to the piublic until the year 25,000,098,783,545,566,675 so don't worry.
The only scary thing about time travel is the concept of butterfly effect... It explains that future is unpredictable and chaotic... So going to future is like going to unknown... Maybe the moment you go there, world war 3 is already started or maybe world war 10... Ahhaha
I am in year 2023
But... This is not timetravel.. This is time accelerating. (or slowness in comparison to others). You are not actually travelling through time rather than slowing down your time in comparison to others. You can't go to the future or back to the past. Is true time travelling possible in theory?>
Nope bruh...
Even, lets say, we moved faster than light... are we actually going to time travel? Interact with the people of the past? This sounds fictional on all levels, even in the weakest/smallest theories.
This is a great question, but no. You won't reverse time. As you reach the speed of light, time will continuously slow down until it is infinitely slowed. If you go past the speed of light you need the time dilation equation (look it up). If you go faster than the speed of sound (140%) The dilation equation will give us a negative square root. This is when you will be in (imaginary time) and actually time will start to speed up until it's normal. So for an example if your ship goes at 200% of the speed of light and you take a one year journey, when you return to Earth only about 7 months have gone by. Hope this helped :)
And it's such a complicated question and answer, so sorry if some of this is a bit confusing XD
But it's impossible for any particle with mass to travel with the speed of light + fotons don't actually experience time so going faster is just impossible
I wouldn't want to go to the future for one simple reason. There is no going back
So? This place is terrible. It's considered being stupid to be intrigued by the idea of time travel, or using dark matter, or talking about the good old Multiverse
Sam Pumpkin-King
This "place" *IS* terrible! I suppose you have a pretty privileged life or are pretty young to say such a thing. Compared to the past, the 60's, 70's, 80's, 90's, whatever- even the 1920's, but today the world is a joke in every possible way. THAT'S what he/she means.
Unless of course you live a very privileged life like you do.
I just don't see how you could say that this world is a "comfortable place to live" hahaha! Very far from it.
Despite All The Rage Name one FACT you have that shows that person's life is privileged.
Let me save you some time and say you can't. What you just argued wasn't backed factually so you're an idiot.
Sorry to break it to you, but you can't stop travelling to the future. You're doing it all the time and you can't go back.
I come from the future
This is the best intuitive explanation of time dilation i have ever seen. Kudos!
This does not answer the question. Time dilation and actual time travel are two different things
Andre Walker how might that be?
kalebb as in you physically go back in time and would be able to talk to your younger self
@@ez-cg8zf i think thats more like a hollywood movie plot!
Time delation is actually time travel, because you get older in 10 years, but after it when your ended your travel you are much further from the present.
@@davidi1027 that's time dilation. What the click bait title was referring to was going back into the past. Just like in the movies.
Everything that's ever happened in your life up to this point has lead to you reading these comments and stopping on mine in particular, you can do great things with your life, that's why it was given to you as an experience. Be kind, save a life . Pay it forward!
I guess thx?
Wow these replies are harsh
hahaha XD
AmNeSiA there's a lotta angry 9 year olds here in this thread
They mean kiss yourself
the comment section is much more interesting than the video
Sougata Banerjee no!
True!
I agree. I have read some of the comments. They are very interesting
u have to watch zlatan ibramovich' s videos comments...
Yes there are some debating even about the existence of time
I think time travel, to be worthy of the name, has to include some way of travelling into the past. One-way travel into the future isn't a novelty: we're doing it all the time. If we could go into the future and come back, that would be a novelty.
I absolutely lost it at Jack & Jill.
I'm a dinosaur and I approve this message.
Loco
Really
Sneezy Cat Shack I can travel in feature but my body not. Any one call me on my number 03103494997
Wow 🤣
😂😂😂😂😂😂
Bruh I need a time travel machine so I can travel to the 90's and live my life 😭😭😭
Enjoy the present
i want to travel to the last moment of my life and give him a real slap for living so vicariously.
Me i wanna go back to 2003 when I was born
I was thinking the same thats why i looked this up 😂
I want to time travel into 2121 because I love technology and I want to see how good it gets in 100 years.
Every video ever taken is actually a person trapped in a specific time loop for eternity.
To travel backwards in time, you'd need to invent instant teleportation between two anchors that can be physically carried around. Send one anchor into space on a round trip that turns around when it's 4 light years away, at a speed of, say for instance, 80% the speed of light. When the two portal anchors rendezvous on Earth, the one that stayed on Earth will have aged 10 years, but the one that went through space will only have aged 6 years. The two anchors will be close together in space, but 4 years apart in time. By entering the 6-year-old portal anchor, you will emerge from the other anchor 4 years ago. You have a working time machine, but you can't go further back in time than when you created the time machine in the first place.
That wouldn't be time travel, you'd just have two teleportation devices with different ages. One 6 years old and the other 10years old. Let's say the year you invented both anchors is 2012 and you sent one out into space for 10years. It's now 2022, one anchor is 10 years old and when the other comes back, it's 6 years old. If you teleported between one to the other, the year would still be 2022. You wouldn't be moving through time, just space. Interesting theory though, there might be something to it as far as wormholes go.
Interesting theory
I've daydreamed about travelling through time often. It would be absolutely amazing.
Lets be honest, Humans shouldn't be allowed to time travel.
Agreed, but who is gonna stop us
Nothing can stop us
+Devron Sijmons Agreed
Devron Sijmons I agree. Maybe we should take a step back.
Walter Strider YES ikrr
Walter Strider no, we shouldn't. We wouldn't be able to control it, so we shouldn't be able to understand it either.
I was so so obssessed about this thing but TED made me clear. You got a new subscriber.
me : sitting in a history class
ted ed: u r time travelling
You forgot to mention that the mass of an object increases infinitely when you travel to the speed of light meaning that we would need some sort of shield to protect us from that mass increase, oh and you forgot to mention about wormholes can be used to travel backwards in time if done properly. Thanks :D
and they forgot about visas and passport documents....
Step 1: Place 100 dollars in bank
Step 2: Go 1000 years in the future
Step 3: ????
Step 4: Profit
Reminds me of Futurama.
Hermos Talk about a get rich *quick* scheme.
I'm pretty sure that the interest rate in banks are lower than inflation rate in most countries in the world
Wang Blake Wow, that's sad.
what if the bank is completely ruined..
no bank = no money
even after travelling 1000 years in future
sad!! hahaha
The earth is traveling at 1000 miles per hour, isn't the time dilating here by a fraction of seconds.
As compared to a slower moving body in space, time dilation will occur in Earth.
Yeah..it occurs when you see it from space. Time dilation is relative effect.
If you're mars or if you're as big as earth, you'll see earth move at a normal speed while humans move so fast...
If you observe a cell it multiply so fast right but if you observe milky way it move so slow... Cell move faster in our perspective because we are bigger while milky way move so slow in our perspective because we are smaller...
Another example of time dilation based on how big/ heavy the object is...
Ps this where some people based their theory about time traveling via quantum mechanics...
time is relative
I have an intuitive feeling that quantum AI could figure out time travel. Space, time and matter play by different rules at quantum scales Once AI fully takes over the development of quantum computing we should expect there to be a huge leap in the technology. And those quantum scales will not be strange and foreign to them as they are to us.
I have a question about time travel.
If you were to time travel, suppose, in 1990. And you went back to 1990 but the position
of earth at that time will be somewhere else in the universe, because earth is actually moving and so is the solar system and so is our galaxy . So you will just end up somewhere in space and suffocate yourself to death. So isn't it actually a big risk to just time travel, you would have to travel through space too.
+Kingdom of Stornia - Development He gave you the grounds for his question, this is all theories here.
+Kingdom of Stornia - Development except you can. You just travel with the speed more than speed of light. Easy
yeah yeah, the earth is flat, the sun revolves around earth, you can't travel faster than light, etc
theories are theories and they're not true. they just work in some situations. you don't know and you can't prove how fast stuff can travel
+Osho SArAF Oh yeah, your time machine would have to have some sort of space-faring capabilities as well as time-travel. Because not only the planet, but also the galaxy would spin during your travels. You would end up way far away. (If you have enough power to time travel, though, flying across the solar system shouldn't be that huge of a deal.)The real trick is making sure you don't end up INSIDE a planet or whatnot at the end of your travels. Because then, there would be all of your molecules intersecting with all of the planet's molecules, and it might have a slight tendency to always explode horrendously.Moral of the story: time travel is more of a hassle than mere time travel.
If you watched Steins;Gate, although it’s fictional, it teaches a powerful lesson regarding messing with time travel.
Time travel isn’t as simple as “I’m going back to the past to right the wrong on an individual level.”
The show explains stuff like time paradox, butterfly effect, world lines. etc. The power to shape the past and the future. It can easily become the most powerful weapon of any organisation that possesses it.
“An entire city, completely altered by one e-mail......”
exactly one of the best animes ever
@@s.shravankarthik7511 tuturu
best anime and my #1 of all time...
I’m so confused by how this actually works still, I believe I have more questions that what I began with now 😂
go back to the beginning of the video, it's like travelling in time.
That's a good sign
It would be cool to see ur hometown or your house before civilization, or during the pioneer ages of it.
I was in 2816, and I saw WALL-E! I just came back to tell y'all.
M_ Vanvid lol
mm
Peggy the Peg good to know. also while there I saw you too. but u missed me. thought I should let you know
@@PankajK123 r/woosh
M • Vanvid you just created a paradox you dummy
I'm confused about this video. If you replaced that bouncing ball with the light beam (like they showed in the video), the shape of the photon's path would not be triangular like the ball's path, but instead, it would be straight back and forth, regardless of perspective. By simply moving horizontally in a vehicle, you cannot add this lateral velocity to a photon. It will always travel at C. Jack in his moving train will emit that photon from his light and that same photon will not bounce back in a triangular fashion, but in a straight back-and-forth motion, thus it will miss the higher mirror and continue its journey into space.. I need help with this one!
This is so vintage, i still love watching this video even this year 3050
"Don't let me go, Murph"
It still gives me the chills.
@squish 7 Rif like the schrodinger's cat?
It may be possible to travel to the future, but it is certainly not possible to travel back in time. If it were possible, then where are all the time travellers from the future?
+CyanGaming | ᴹᶦᶰᵉᶜʳᵃᶠᵗ ⁻ ᴳᵃᵐᵉᴾᶫᵃʸ It's possible through wormholes. The certainty of its existence can be confirmed by Einstein's equations. If we can somehow extract one from the vacuum of "empty" space, all physicists agree that it can be expanded large enough so we can use it as a time travel machine. But there are several paradoxes that can messes up this theory like the "Grandfather Paradox" etc.
See but that's the thing, the future hasn't happened yet, we are the future, so until we go back and make it happen, we won't see any time travelers. We haven't invented it yet so therefore there is no way to go to and from, because it hasn't happened. Like in the video, time traveling wouldn't be just being able to go forward and backward, but it would be like you blinking and 10 years has passed because of how fast you were going in relation to space and time. You're not skipping anything, you're just hitting the fast forward button. You still exist in the universe, so your disappearance in the present would lead to your arrival in the future, obviously taking mere seconds for you, and however long the conversion is by how fast you are going is for them.
Some ideas of time travel that I have read would suggest that travel would only be possible from and to the point in time where the first time machine was created. Say it was like wormhole time travel, and one end was set in the year 2020. There would be no physical time travel object existing before the year 2020, so this would be the earliest year possible to travel back to (and potentially, this date will be gradually moving forward also)
+Fuzzi Fluffy (FuzziFluffy) You know that's the thing, we think we are the future and live on million assumptions, but how can you be sure of that. We mark ourselves as the middle of the universe in our daily thinking, but no one else ever did for as far as we know, so it's just a lot of guessing.. Might be true, might not be true.
+CyanGaming | ᴹᶦᶰᵉᶜʳᵃᶠᵗ ⁻ ᴳᵃᵐᵉᴾᶫᵃʸ Two Words. John Titor.
There was a really cool Star Trek Voyager episode where their ship gets stuck in orbit of some planet. The time on their ship was normal, but to the people on the ground it had been there for centuries and became a part of their culture and mythology.
There was also a cool Voyager episode "Threshold", where a ship passed the warp 10 barrier, and was essentially everywhere in the universe at the same time (past, present, future), because time had broken down. I miss non-J.J. Abrams Star Trek.
Releasethezazen Wasn't "Threshold" called the worst episode of Star Trek ever done?
I barely remember it.
Isn't everything subjective? But, the first google search I did said it's 18 out of the worst 20, but the premise is sound: being everywhere in the universe, space, and time at once. I didn't really care about the salamander and de-evolution, just the concept of time not being linear.
Yes, It's possible. Just travel from India at 12 midnight on 1st January to UK and you'll land in UK at 8-9 PM approx on 31st December, since Indian time is 4 hours 30 minutes ahead from that of UK.
You can also say that you took a flight this year, and landed in previous year.
nice usage of the Strasbourg 2-10-0, love that engine
What about travelling backwards in time?
little more tricky but would be good if that was possible .............. or it could be very very bad! lol
Bonobo Handshake i understand travelling forward in time, but isn't travelling backwards completely impossible in every conceivable way?
Yes I have heard this too. I was just saying if we could, it may seem cool (I would go and study early humans) but in reality it could be BAD, very complicated I imagine.
It's theoretically possible to travel back in time, you just need to go so fast that you arrive in a location before you leave. It sounds impossible, but people have actually designed machines that can do this. Unfortunately, they cannot be built with current technology.
Also, the only one that doesn't require materials we don't know how to procure, would span the width of the observable universe. I doubt we'll ever want to build that.
So, in a way you're right; it is impossible to build one, but only because we'd first need to do different impossible things...
That doesn't really help my case, does it?
EvilBarrels Travel really fast to travel back? But how does that work when we need to travel really fast surpassing the speed of light to travel forward?
Time don't exist. Clocks do.
What do clocks measure?
a fictitious measurement. Or as we call muggles "TIME"
what's the measurement that we adopted from watching shadows go around a fixed point from the Suns light? It's called time and how long it takes. The stupidest conspiracy of all time is people saying time doesn't exists like what? just stop and quit trying to be the guy that changes the world and go help someone in need.
+Austin Willis time doesn't exist. It's called time because we just can't call "Time" clock, because clocks shows us time. And It's hard to explain. And if you have common sense. You'll know that time don't exist. The term time in earth is just a measurement of well. Time.
+Ginger Katy The time In which were living can be argued because we don't know for sure what time it is. But time itself is as old as the universe. It cannot be argued. The definition of time is the indefinite continued progress of existence and events in the past, present, and future regarded as a whole. The universe began and thus time began of how long it's been created we don't know the time but it's there. Our time measurements can be debated but the Concept of time cannot.
You have actually achieved the impossible; you have helped me to understand time relativity!
I'm just going to propose something that I'm not sure has already been thought of or not but. Time travel, if possible, would be some very tricky business. I don't even want to comprehend how it would be done but, if it were done, I think it would be like this. I've heard people talk about a timeline, like a literal line of time, a line that someone can move backward on or forward. If this is true, I don't think it would be possible at all to travel in the future because it simply hasn't happened yet and because everything that happens, regarding people's actions, completely relies on their decisions which can change because we're all unpredictable when it comes down to what time we wake up to the second, what we eat, what we wear. However, since the past was a complicated sequence of events that already happened, you would be able to travel back in time because its known. Once you do travel though, the present or, the future, (considering that you're now in the past) would be different regardless of any change you made because of the simple act of time traveling in the first place. Again, idk if this has already been proposed or thought of before, it's pretty likely considering all the people who have thought about time travel but, just looking to have a discussion.
I'm pretty sure that when we watch a time travel video we expect like a few years, not 0.02 seconds
they add up.
the heavier you are the slower you get
light is energy it had no mass
hence it travels so fast
we can't because we weigh 60-80 kg for a normal person
So theoretically, if I became really fat will I be able to go back in time?
Chucky peter you'd have to be over infinity
I think I'm close.
daaamn son
thanks martha stewart
Time travel is possible!..
See.. now you are in the future!
Your even further in the future!!
Wow! You might as well be at least 5 seconds in the future from when you started reading this comment!!
I feel sad that the present just past now!
🎶You're older than you've ever been
and now you're even older
and now you're even older
and now you're even older
You're older than you've ever been
and now you're even older
and now you're older still!🎶
-"Time", by They Might Be Giants
No 3 seconds
@@abdu7253 past to just read this comment lmao
You can't even even use grammar properly, sad.
If it is possible to go fast enough to increase the effect of time on you relative to earth,
would it not be possible to move slow enough to decrease the effect of time on you relative to earth, to go into a form of stasis? A week for you, a decade for earth, etc.?
There is also gravitational time-dilation - clocks 'tick' faster further 'down' in a gravity well than those far above it.
I heard that some pre-Moon-landing Apollo astronauts experienced this kind of slower-time-for-them-compared-to-us-on-Earth because of a significant amount of time spent in a region where the attraction from the Earth and the attraction from the Moon cancel each other out. (Of course, the spacecraft, along with the Earth & Moon, were all still orbiting around the Sun.)
There is no way a human could experience the difference of time flow. We experience only our own time, and there is no way our mind could compare that to the time flow in other places. We experience every minute as a minute, but other people experience that minute as a minute too. It's not a difference in experience, it's a difference of test results. Tests say that less time passed in stronger gravity. But those guys can have no way to actually feel it in a way. Only after they see clocks that show different times, they understand that time did flow differently, but still they could not feel it.
Jesse Heinonen Yeah, when I said those "...Apollo astronauts experienced..." it was just an expression [I didn't use the word "feel"].
I agree with your Reply, it's only test results - that's the whole basis of Relativity - everything seems normal within each frame of reference, it's only comparing frames of reference that we see curious differences.
And the aliens are just looking at us saying "oh poor primitive mortals".
:/
Netflix's series "Dark" is a really cool time travel series..its a must watch.
Please consider A & B, what A & B used in measure changes some how, may be due to gravity I think. Because B after traveling in jet in high speed and large distance saw A back after constant time is same (think C measuring in absence of gravity or ideal place). It means A is not viewing any body's future when they compare the measurement at ground where B stays. What A sees will be seen by B and everyone (both are at one place). May be Gravity changes the measurement. At the time of rotation, do we have any method or derivation that how A looking B, everyone & everything and how B looking A & everything. We can compare the viewing enhancement from C and may tell whether A or B went future or past respectively. A may be in up or down excitement when he comes back to normal for some time. What I heard time travel at some point of time When I go to history and I need to see Grand Pa as young or when I go to future and I need to see Grand son as old. 🤔🤓
exact at 3:45 in this video on Earth
"doesn't she look like my friend Justin bieber?"
so does this mean that the past is still going on? Because if someone in the 1800s was travelling the speed of light for like a year they would arrive right now? Makes me think everything is predetermined and time is just an illusion to help us experience it
+Tripp Moore if everything was predetermined we would be able to go back in time, not just forward.
+ZomifiedHam The universe is predetermined, that is a fact of physics. When our Sun reaches its end and implodes into it self it wont be some random event, it will be reaction of the laws that were created billions of years ago at the second when the big band happend. Same goes for everything in the universe including us. The past future can't be experienced at the same time that is why a thing from the future cant exsist in the past nothing to do with predeterminsm.
시간 여행. 모두가 한 번쯤은 상상하고 해 보고 싶은 일 중 하나입니다. 비록 아직 과거로 여행하는 방법은 밝혀지지 않았지만, 특수 상대성 이론을 바탕으로 한 미래로 여행하는 방법이 있다는 것에 놀랐습니다. 시간에 대한 사실이 더 많이 밝혀져서 언젠가는 과거로도 여행하는 방법이 발견되었으면 좋겠습니다.
The problem with this is distance. How do we travel at lightspeed without moving, effectively allowing time around us to progress, while we wait for decades to pass intstantly? The best solution is to become a permanent memory, with a mechanism that resurrects us at a predetermined interval. Or, a long looping wormhole through space that begins and ends at particular point.
I really wish it was real. There's so much i want back.
"Time travel "
Doraemon :oh yes!
Or
Nobita: Ha doraemon tune to moj kardi 😂😂😂😂😂😆😆😆😆
just for the record, i'm rewatching heroes, and it's got to the episode where hiro nakamura has to ditch the princess and get back to work, and i was thinking, heck, he can stay with the princess for as long as he likes and still return to the point in time that he left - only he can't - he will be older. if he stays with the princess for an hour maybe that's okay, he can return to the point he left and no one the wiser, but if he stays with the princess a week, a month, a year, ten years, he is getting closer to his appointment with death, he is getting older. which requires the question, what happens to the time traveller while "in time"? if metabolism stops at the point of departure - he won't be able to move, he will be locked in that split second of leaving, if he gets older, the nwhat if he doesn't return to his own ime, he's extra material to the universe he visits, if he can't get back the the point of departure there will be no balance. just thinking out loud mr tube.
i just had a doubt that jack and jill doesnt see the same speed becuase here comes the relative speed concept.........jil is seeing the ball move faster as the velocity of ball that jack sees is with respect to train that is 1.2 where as the velocity which jil sees is with respect to ground whcih is 4.2,so we can conclude that velocity of train is 4.2-1.2=3 that is jil is adding the velocity of train as well to the ball and jack is seeing the ball's real velocity that is 1.2 metre/s........hence we ca conclude that time taken by the ball to displace in the train is=distance covered by the ball in tain/real velocity of ball where as if we talk about jil,it is displacement covered by train+displaceent covered by ball in 1 bounce/4.3m/s
The distance is the same, the man is relative to the bouncing ball that is why he sees up and down but in reality the ball is moving side to side, but not visibly to the man, the time and distance are the same to both.
This took me a good 30 seconds to process
Recent me: i am better in math now
After watching teded: Maybe i was smarter before
Ok just to clarify a point at the beginning the astronaut DID NOT travel into the future faster then us into the future that doesn't really make any sense if I remember my college physics, it's much more accurate to say his clock relative to us changed moving forward where we actually were moving at a rate slower then him experiencing time differently. He wasn't actually moving into the future faster then us we just were moving slower then him. I know that might sound a bit silly but It's an important distinction I think to make especially in a education video :)
Yes. I explained how before editing comment, if you're really interested, you can borrow time machine or paper with exploration from future you to proceed in reading it.
Is time travel possible? SUCH IS THE CHOICE OF STEINS;GATE!
Lmfao
My comrade, we must join forces to stop SERN.
El. Psy Congroo.
Okabe, nice try
tu tu ru
TU TU RU
*TU TU RU*
No!! S;G Zero finished, what should i do with my life?, what? it's the choice of steins;gate..
Yes... it’s okay, I’m here after EndGame too.
Sean Henry RIP Howard Potts
I am too.
@@roxananastase5265 advanced technology has contact exotic matter
*fatal error crashed*
Is it impossible to go back in time then, how do would I slow down my speed, and if doing this doesn’t mean it would work because if I slow down the everything keeps moving at the same speed then I would be going forward in time but not in the same way as if I went super fast.
What does everyone else think?
If someone went back in time with a bunch of 8gb usb sticks to 2009, would it affect the space time continuum if they uploaded dozens of hd 720 movies that didn't exist and were not even in production yet?
I might just be a time lord like the doctor after watching this.
I'm too dumb to be here all these comments with there theory's and shit and I'm here trying to understand my existence
all these comment are just explaining theoris they just did some research
Can it be just the clock you are using interacts with the fundamental forces in nature when you are travelling?
People get time travel's definition wrong all the time. They say it means travelling forward or backward through time, but it is actually travelling forward or backward I'm time in a lesser time period.
We time travel all the time. We go about one second in the future, in every one second, but significant time travel means like travelling a year into the future in 1 second
you get a sub .
p.s who is watching this in 2086 .
lol..
I a watching in 2090
31st century here! It's so much fun. Traveling to Mars has to be the best part. It's so easy. The only downside is that everyone else is tetrachromatic and I'm not. Oh well, what can you do.
I wish I could time travel back to the year this came out
I thought time dilation was only perceptive. So you perceived yourself going slower but rather your still were going at the same pace. So how does it affect your age, or clocks? And if time slows for you wouldn’t you be older? Not younger? Since you would have more time to age since time for you is slowed...
What if time is bounced between two mirrors in a train that moves at twice the speed of light. Then I think the light can be seen travelling faster than the speed of light because the speed of light in the situation is relative to the person sitting there but not the actual speed of light with which it is bouncing. What do you guys think?
Do we age if we time travel?
only as much as according to your own frame of reference
wat do u think, if u travel for an year the earth would move faster in tht time.. it will also take one yr on earth.. this is stupidly orchestrated illusion based on the theory tht distance as seen by a stationary person and a moving person is different..!!
LIEK IF U DIDNT UNDERSTAND SHIET
Haha u r funny
***** Lol no, I just wanted to know how many people didn't understand. And this was supposed to be a joke -_-
+Altmash Sheikh i have a short attention span and i understand it! i just press the left arrow key if i didnt understand something
+Sergius ikr😂
+Altmash Sheikh It is actually explained rather badly.
After our class me and my friend made light of the Jack and Jill example in the video, and kept increasing the accent where Jill was genuinely upset that Jack was bouncing a ball on her train.
WAYA DOIN JACK YE BOUNCIN A WI'LE BALL ON MY TRAIN YE' COM GET YA WI'LE BALL FYROM YE CAUSIN MISCHIEF AN CHAOS ON MY TRAIN
I lost count on how many times I have watch time travel films, but Netflix's series "Dark" is the mother of all time travel I have watch so far.
i have been thinking about this and i dont mean to sound like a know it all and i dont expect that i am right but here it is. if traveling round the world at FAST speeds makes time taken different between people on earth and the one in space, all we have to do is get to the speed of light.
now scientists are teleporting atoms across hundreds of miles between computers by scaning the atom and converting it into computer data(destroyin the original atom) and another computor using the data to create an identical atom.
if the same could happen to humans, we could find a way to convert human atoms into light, to then travel along tubes that go under the earths crust and let the light go round until we want to take the light data and use tecknology to reasemble the human being maby ten or twenty years in the future, with the said human thinking the trip was instantainious.
thanks for reading😄
This sounds really cool, but to reach the speed of light, I believe that particle cannot have any mass. I'm no expert on the topic either, but I'm not sure if this is plausible. Maybe if we had a spacecraft which could reach incredible speeds and sent it to a distant galaxy or something and a large planet or star had enough gravity to change the direction of the spacecraft back to Earth, that could be cool. A person's year on the spacecraft could be decades here on Earth.
Michael Abraham well we did have a theory that if a neutron star exploded and sent its core towards us we would need to make a rocket that would be able to hold about 1,000 nukes that we could drop behind it we would be able to knock the rocket so fast that it would lliterately launch the rocket so fast that it would shoot us back in tie because the light has not caught up with us yet so we would be in the past by so so amount of time
I believe teleportation is the kind of word you are looking for. Well we don't even need light speed for that in initial stages, the main problem here is that its impossible to break or re-assemble human data as of now. Its trillions and trillions of units of information which even the best supercomputers today cannot handle. And even if we were to achieve this kind of scifi thing in the future we wont be traveling at the speed of light but beyond it in a way. Since the shortest distance between two points in space is not a straight line but instead its zero as shown in movies like event horizon or interstellar. :D
you are correct teleportation is in our age physically impossible not only because of the units of info but also because we would have to dismantle ourselves to the particle then reassemble ourselves in a different place would kill us now however there is supposed to be these small portals opening around earth every 4.5 seconds that last for about 0.0006712 seconds or something like that but we have had satellites dissapear as they hit orbit these portals are apparently created by magnetic fields around the earth and the sun creating tiny wormholes if so if the human race could create one and make sure it went where they wanted it to we could create time travel and teleportion
Caleb Robinson Wow never heard of that. Is it true that such portals naturally exist? do u have a source from where u got the information? it'd be cool to know about it. :D
Word 'Future travel' is more appropriate. I don't think science provides theory to go back in past.
Actually there's like a cylinder thing that lets you go in the past if you travel into it and out from an angle
Moohy William also yes
It does. If you could travel at a speed faster than light, time will start to reverse.
Genty : I can only imagine !!
Well, actually I can't. lol
Not that hard to imagine. Consider the speed of light to be Instant. Now what would be faster than instant? Imagine that you had to reach somewhere at 9 pm but its already 9 pm now. If you could travel instantly there, you would reach there at 9 pm without being late. But when would you reach there if you could travel even faster than instant? You would reach before 9 pm.
I learnt that overcoming light speed would make us travel back to the past, not the future as our time speed will go under 0, so negative values (we got two speeds, time speed and distance speed). Increasing one speed decreases the other.
Why the time get slower on the watch which was in the plane because for the observer inside the plane the clock on the ground must have gone with the same speed but in opposite direction.
Can only move to the future, but not the past. That's probably gonna have more negative repercussions than good due to the fact of being left behind in the developmental processes that society has emerged from in a future time. It would be detrimentally scary to me to not be able to cope with society. And what's the point if you can't ever go back? Haha, but I guess that's life.
The only thing I don't understand is how special and general relativity both work together. In other words, you could just as easily say that the jack and the train were still, while jill and the surface of the earth rushed by. There is no such thing as absolute velocity, its all relative. So how do you know who is really traveling faster?
i'm guessing its based on whoever is exposed to the greatest change in energy, and, whoever has the shorter recorded time lapse. since jack was in an object that required energy to push him, and, since his recorded time would be shorter than jill's, that's what made him travel faster.
You are both wrong. What you have to understand is that, physics accepts as reality what can be observed and tested. In order to observe, you need to have an observer, which in the example given we have two observers. The problem comes when both observers have differente results from what it seems to be the same situation. This situation is much more complicated than it seems, it actually has everything to do with quantum physics. There are TWO results to the SAME experiment from TWO different observers, it all comes down to the question: "How can we know if we are the observers ?"
That doesn't answer my question though... What I want to know is that if two people go by each other at some significant fraction the speed of light, which one will age more? While each observer might have a different experience, the end result must agree. It's not like they each age more than the other...
Austin Geary There has been a lot of discussion about how motion must be determined. Relativity explains motion as relative motion to other objects. This is of course a bit problematic, because we could always argue about the relative directions. If you have water in a bucket, and you start spining the bucket, you'll see that:
1. The bucket is still, and the water is still. Neither move relatively.
2. The bucket starts spinning, but the water is still still. Now the bucket moves relatively to the water.
3. The water gains speed. Both the bucket and the water spin with the same speed. Thus, they have no relative speed. The water's edge rises up, and the middle of the surface goes lower. You know that.
4.We start to slow down. The bucket is still, but the water spins. The bucket moves relatively to the water, and the water's edge is still higher than the middle.
5. Both stop, water surface normal, no relative speed.
Why does the water's surface change? It's not because of the movement, because the movement is relative. What if it's relative to Earth? Why would the water care about the Earth? Not to mention that the Earth spins too, and it doesn't matter to which direction you spin the bucket, the result is the exact same.
This is why we must define something as an absolute space (or absolute space-time). This means that we can define specific points in the absolute space-time, and movement is relative to these. This of course means that the matter around these points doesn't matter.
The defined points in absolute space time are completely still. We could define the points so that the distance between each closest points is always 1m. This means that their distance will always be 1m, regardless of what happens around them. They are not bound to London's map or anything else.
When the space enlarges, the distance of these points remains at 1m. This is because the metre itself becomes relatively longer. This is why we perceive the universe to enlarge. If we take to distant galaxies that have no absolute speed relative to one another. This means that they are both still. Even so, we would still perceive the other galaxy as going away, because the space between the two galaxies expands. This means that the two galaxies have relative speed, but would that mean that the other one's clock would run faster? No, because their absolute speed, their speed which is relative only to the absolute space-time, is the same, zero.
Jesse Heinonen
Maybe I missunderstood your explanation, but the concept of "absolute space" is completely wrong. The principle of relativity, which is one of the base assumptions, that special realtivity is build upon, forbids any frame of reference to be "absolute". You can only define motion of two systems relative to one another.
You equate many variables to the same outcome, but Jack is also moving along with the light, meaning he is also moving through time, like every being relative to themselves.
Backwards travel is either impossible because you would need to be moving negative distance which doesnt exist, or it would happen as you approach being completely still like unaffected by any sort of gravity or any other miniscule force which would be nearly impossible