Neil deGrasse Tyson Explains Worldlines
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- Опубликовано: 19 июн 2024
- What do Zoom calls and Einstein’s Theory of Relativity have in common? On this explainer, Neil deGrasse Tyson and comic co-host Chuck Nice explore worldlines and the technology that is helping us hack the spacetime continuum and track particle paths through spacetime.
What is a worldline? Learn about the connection between space and time. What are the ways you could prevent an asteroid from hitting Earth? You’ll also learn about telephones, worldlines, and how a time machine would work. How does Zoom break down the space-time continuum?
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Science meets pop culture on StarTalk! Astrophysicist & Hayden Planetarium director Neil deGrasse Tyson, his comic co-hosts, guest celebrities & scientists discuss astronomy, physics, and everything else about life in the universe. Keep Looking Up!
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0:00 - Introduction
0:38 - Einstein’s Concept Of Spacetime
1:33 - Space-time In Everyday Life
6:12 - What Is A Worldline?
7:53 - How Zoom Broke the Space-time Alliance
12:40 - How Changing An Object’s Velocity Changes Its Worldline
14:56 - Closing Notes 
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You just can never get bored of star talk. Like ever.
That’s a fact
Not a fact... I get bored when they talk to the guests about themselves for too long. And you can tell by view count that there are certainly some episodes that are very boring. The explainers are good. The cosmic queries are good. But the star talk that typically stars with a biologist or some humanity related scientists...meh.
I go to bed listening to these every night and I wake up to them still playing and I'll just lay there for a while listening before I get out of bed
yes
AGREEEED....These talks litt my brain up!!!!
I've seen Neil explain this SAME TIME and SAME PLACE thing sooooooooooo many times. It's amazing how excited he gets every time. And poor Chuck reacting like he's never heard it before. LOL. Another great episode guys.
Lol.. same here. And I was wondering is chuck reacting surprised for the show or because he forgot the explanation.
@@JJs_playground Kinda both, I think.
I honestly thought I was just watching a 3 month old episode.
Still watched till the end tho.
Well, you have to realize that there’s always someone who hasn’t heard it before.
@@Zolgeist I realize that and I think its amazing they can discuss it like its the first time...everytime.
I love the internet for this reason.. I get to have Mr. Tyson as my teacher while sitting on my couch relaxing at home.. how cool is that! Thanks Neil & Chuck for another great video ❤👏
Kudos to Chuck for turning deflecting asteroids into such a brilliantly simple and in retrospect obvious analogy everyone is familiar with! He never gets to joke around about being dumb ever again. Sometimes genius is naming the obvious that everyone else fails to notice.
Well said!
I'm ure I am a elf proclaimed genie... 15:17...
Man I loved it... So weird how we don't think of worldlines in our daily routine.
It was good to learn and who knew there was a connection between Einstein and Zoom
I read it as "worldliness," and when I looked it up it was two words: world lines.
My theory is that the phone calls and the video calls indeed break the worldlines for time and space coordinates, but not for human beings. They break the worldlines for some avatars of us - some physical devices, which can reproduce some of our actions. You should be at the same time and the same place along with this device, which reproduces the avatar. In order a real human meeting to happen, there is 1 mandatory requirement - to be able to touch (if the other person is too far away, this is not a meeting, this is a"void"ing). So, the phone calls can reproduce the voice. Then the video calls can reproduce the voice and the sighting. But still there is no technology, which can give you the opportunity to make a handshake. Strange thing, still after a video call, the people continue to say "I talked with her". Nobody says "I saw her". And after a real meeting you say "I saw her at the Starbucks. We talked". Nobody says "I saw her, we made a handshake, we talked". This is like the concept for the space dimensions - each next one is a combination of 2 x previous one. When in the near future the phone handshakes are achieved... we will for sure say "I saw her, we touched, we talked".
*P.S* If in the Future we are able to touch through the device, we will slowly turn into Simulations. Probably this is why the phone number chips are called *SIM* (ulation) *cards* , but they still make us to believe the name means "Subscriber Identity Modul". We, who watch StarTalk .. we can't be fooled.
@@flamake69 um... I've watched Star Trek since the original, in the late 1960s, and early 1970s in first reruns. I've watched all of them, even the original Battlestar Galactica, and Doctor Who since #3 Jon Pertwee. What I don't get is this:
What does any of this have to do with turning us into non-humans? That's just... bizarre.
@@flamake69 Nice point . I think it's paradoxical
@@flamake69 interesting points. I think this answers my question about whether there is a way to meet someone not at the same location and time. Could be that our avatars be able to meet without having to schedule a time
Just a few days ago I was thinking that, another reason why it is almost impossible to build a time machine that works correctly is because you also need a spatial coordinate apart from the temporal coordinate, and my question was, how do we define that spatial coordinate? If everything we know so far is relative or specific to our world, everything in the universe is in motion, how do we determine the absolute coordinates to be able to establish them in our space-time machine? the relative form seems to be the answer, although it should be quite exact to avoid spatial problems (Memories about Steins Gate).
Well the easiest way oddly enough would be using GPS …because the addresses we put in are just what we can read easily… but the whole time the GPS Is actually using lay and long coordinates … but the one small thing that needs to happen is GPS would need to have an upgrade to be able to calculate where the earth would be in the suns orbit at the time you plan to go to. So space-time GPS? 🤷🏾
@@kellyblack2010 Yeah, I was thinking something like that, but still I think it will be quite imprecise, because as far as we know, everything moves, the earth, the solar system, the Milky Way and so on. practically we would have to consider each additional movement that there is in the elements that contain our planet to avoid any error, and it looks quite difficult.
It would be fair to assume if you were to invent the time machine, you'd be able to calculate Earth's movement through galaxy. Especially since it's constant (as far as we are aware)
"I am right in this wave with you buddy" love that. Both men here are very intelligent folks and I love hearing them speak to one another
36 years ago, when i was a young teen, video calls was the one future technology I was looking forward to and fascinated by. I thought, once we got it I'd use it all the time. Fast forward to recent times and i hardly every use video chat (or even calling people on the phone for that matter). Now it's mostly text messaging.
Non real-time Video chat from a block universe perspective would still be a live video chat ..WORDline 🤙🏻
Im not a big fan of videos at all. Too shy.
These guys are so nice! Always anxious for the videos to come out!
He isnt. Met him in person and he blew me off.
@@fayadmunaim3650 you’re right! He should have stopped and talked to you! Who does he think he is?! He should talk to anyone and everyone that wants to “chat” wherever he might be or whatever he might be doing! That’s his job! Does he think making these videos is enough?! 🙄🙄
Glad we give you something to look forward to!
Just mind blowing. Thank you 🙏 both of you. I just love this show.
That was a very cool talk. To explain things in such an easy way, I was giving answers before they were finished. Love "Star Talk"!!
You mentioned the 1964 world fair video call. I also experienced that space-time disrupter (Zoom’s grand-parent) at Expo 67 in Montréal when I was a young boy. I think it was in the Japanese Pavilion and we waited in line for the chance to talk to, and actually SEE, the person at the other end of the line. 🤯 Thanks for reviving this memorable moment for me.
Neil explains such complex and daily life things in so easy way that always leave me awestruck.
He does make some blunders though. He once said, with regard to UFO's, if he can't touch it, it doesn't exist!
So apparently black holes and many other things do not exist according to Neil..
Imagine having a high enough iq to observe reality and learn this stuff. Einstein had an exciting life.
I loved this intellectual conversation. My brain is thanking me
That was such a great example of the space time continuum and worldlines. Awesome!!!
So educational “star talk”, I am so grateful to Neil explaining science in such easy way to help me understand and ask for more.
Never ever heard such an space video like this. Just mind blasting 🤯. I want to be a rocket scientist and Neil sir you are my one of inspirations. Thank you for this much amazing videos.
Love this, man! Thank you Neil and Chuck for making terrible times bearable
awesome subject and coversation, thank you Dr Tyson and Mr Nice
Haven't even started it yet but I love this subject and am excited to see more!
It's amazing how these guys can make otherwise tedious points so much more interesting. I love this show! I find myself loving physics now.
Neil deGrasse Tyson is a living legend & a modern-day genius ahead of the times--what a great contribution to our human race!
That's the best thing that happened during covid... there are so many brilliant talks and lectures to watch now all for free... democratization of knowledge.. I hope they can keep it that way.
We hope so too!
Wow I learn new stuff everytime I listen to star talk.
Awesome! Love the stuff about a 'space/time machine'. Just thinking that to go back 100m years to see some dinosaurs, the STM would have to take me right to the other side of the Milky Way because that's where Earth was!
That would be a rude awakening!
@@helpallofem4428 oh boy! And no doubt the universe is moving around in something also...
Dr. Tyson, I think the Zoom call would not break spacetime it would move you into the quantum (hope I am using that correctly.) You are still intersecting on the time coordinate in the world of the large cosmological, but now you are all meeting in the same collection of electrons running through a machine someplace. you have just technically taken up a "Super Position" in reality. So you and I pick a time to meet in Zoom or Discord say 18:00 GMT or Zulu time. Once we start the location is quantified as a hosted location our vehicles to reach this place are IP addresses the space we define using a MAC address and a DNS name and since we are measuring them we've affected a host of electrons to connect us.
I'm an Independent Latino, Thank you KING Neil!!!! Rogan brought me here.
The Caption ordinary but content was best ever on startalk.
I thought I would not watch this, but blew my mind and gave me the answer 😄
I love it! You, my friend, just saved lives with that explanation. Its surprising how most people will freeze with danger on the roads! Be safe everyone avoiding asteroids on the roads.
Re: the "leaving earlier to prevent a car crash" analogy. I do this every single time I get food from a drive through. More often than not, no matter what time I go, there will be at least one person in front of me. And by the time I get to the window there is NO ONE BEHIND ME. Meaning if I had left the house a minute earlier, or 5 minutes later, I could have avoided waiting in line.
Except that the line will forever alter itself just to make sure it has an effect on your space-time.
I run into that every day in traffic. No matter the time I leave the house, there is ALWAYS either someone in front of me who refuses to even come close to the speed limit, or there is someone behind me who refuses to not ride directly on my rear bumper while also refusing to pass.
Its a tiny phenomenon fans of the simulation nonsense (hypothesis) try to use as supposed "evidence" supporting their poorly thought out idea.
Granted, I can not explain the consistency behind this curious issue, but the simulation nonsense sure as heck doesn't even come close either. lol
Absolutely LOVE this podcast/show
Best one I've seen so far. Startalk is awesome
With Zoom calls you still need to be in the same space, but it's called "cyber-space". You may be in different locations, but you still share the space with your counterparts, not only time. It's impossible to access a Zoom call without an internet connection. The space-time relation remains if you see it that way.
I think in this context the space component refers primarily (and potentially solely) to the concept of physicality (like you mentioned - location); in your example, the internet is a form of connection but it still is missing the space component by not having that shared physical location aspect. Still, your theory is mind bending to think about and for sure thought provoking.
@@emleecee Fair enough but the internet is really just a abstraction for an "army" of interconnected machines sharing data between each other through literally electronic currents. So the physicality (location) aspect is still there!
In other words, the video and audio that Neil is creating is literally traveling at crazy speeds to Chuck's machine and the same is happening with Chuck's data. It's just happening so fast that it looks seamless.
It's pretty mind-blowing when you think about it.
@@emleecee True, but all communication requires the message to physically travel between people. Without a connection through space for the message to travel, the message can't be communicated. If anything, our worldlines didn't necessarily need to intersect before, but simply get close enough to allow the message's worldline to connect between the two. All we've done is stretched out the message's worldline, allowing more space between the two people's worldlines.
Really love the relationship between Chuck and Neil. The right amount of big abstract ideas and humor makes it really easy to watch!
C H U C K
11 U C K
K U C K
K 9 K
K I K
CHUC... U R REDUNDANT!!! 15:17...
N E I L
APPARENTLY YOU ARE ALLSOSICK
...KINDA LIKE MOI...??? 15:17...
19. 21. 15:17
ALL GOOD
O. , K. 15:17
the video i was waiting for since the spacetime video
We can also FEEL and BE at the same space and time via REALLY GOOD story telling. Appreciate good stories that transport you to a time and place you never existed in but feel like you did.
I've always wondered; to be at the same location in the future,
should we calculate Earth's orbit around the Sun
and Sun's orbit around the center of the galaxy
and the Milkyway traveling through intergalactic space
and also the Expantion in the Space/Time fabric ?
Yes, you would have to! Which is probably impossible!
How to deal with the issue that location is probably relative? Can we define and measure the exact center of the universe for a reference? Finding the "exact same location" as from the perspective of a planet dweller where both the source and target spacetimes are moving in multiple ways are an issue. What if we put a waypoint beacon sensor thing somewhere specific to Earth that could be queried through the teleport device for target spacetime data, so the source device knows exactly where to send? The source spacetime device would need to communicate with the future version device to retrieve the safe target spatial location data per a specific future timeline. Same coming back. You could only travel forward and back from the future though, and you'd need to maintain the device over time. Hmm. I think even this idea would need some common constant between spacetimes for the data to be useful, otherwise there is no cross reference. I just don't see the "center of the universe" as a likely measurable location to be detailed enough for identify local positioning, but we don't know and this is all speculation anyway. :)
On second thought, any system would also need to implement a way of matching velocity on teleports. Can you imagine teleporting to earth future but you don't match velocity with the earth surface? Your source velocity could be in a different direction than target, depending on what time of day and y axis position on planet. You would splatter at hundreds of miles per hour across several neighborhoods. Near the equator you are moving over 1000mph just to stand still (and not including earth's orbit, solar orbits, galactic movement, etc). Any system that can not only teleport you through time and space, but can also add large amounts of velocity to keep you from splattering could have implications re conservation of energy... LOL ...next life maybe.
Relative location is weird. Presuming there is no change in velocity then the time machine follows the velocity- or otherwise there is no fixed point in the universe as reference, which i think is Newton let alone Einstein.
So if orbiting would you have to correct it in a direction toward the sun/galaxy centre a bit like letting go of a slingshot? How does a time machine work anyway? Does it involve travelligg faster or at speed of light? Would it have to be free in space to be free in time to work in the first place since they are so linked that space travel would be the way to work it anyway? So is it much of a problem?
Mr Chuck is pretty smart for a comedian and Mr Neil is pretty funny for a physicist. I love StarTalk!
i take pride in saying, ive watched every single episode of star talk for three years in a row !! 💖🏆 especially love DEEP cosmic queries
I have watched every explainer the last few years and have 50 pages of notes lol
Thank you for the video that was a fascinating subject. Great presentation.
If Chris Rock would have left that stage just a few minutes before he got slapped Will Smith wouldn't have gotten to do that. Lol
I love how simple to understand this is and makes sense, why can't everything be taught this way?
Not enough Neil’s in the world!
@@StarTalk very true
I listen to Dr Tyson so much I talked about all the episodes. My mom finally became a follower! 🙋🏻♀️❤️
That’s a smart mom!
For any of this to make sense, for a layman such as I, we need our Chuck Nice translation, to help us understand the master Neil deGrasse Tyson. Since your pairing, it has helped my understanding, for sure. Thanks guyz you blow the mind.
Thank you for the kindness!
Everyone who saw this was not at the place OR the time, but we all saw the same thing. Except Chuck; he was there at the time, but saw something different. 😁
i appreciate the effort took by neil sir for passing his tremendous inventory of knowledge through these shows...
thank you sir...
I love star talk l, just wanted to shout out to the show loves and support.
These two guys are the absolute best. I love how they play off of each other.
Keeping somebody safe in your presents for as long as you can, before you move on to the next person you keep safe in your presents for as long as you can. Making people feel like they're needed and wanted when they're around you for as long as you can before you move on to the next person. It makes a difference a few minutes a few seconds. But it's still all by chance or by choice. I would love to see what happens if they can figure out how to get to the asteroid first and how to propel it or to slow it. Get stuck in some Interstellar jello.
Presence*
Cool bro… have some presents. 🎁
Doesn't the zoom call still rely on signal relay at basically the speed of light? So not simultaneous
Hmm, I think the resistance of the cables and other transmitters makes it so the signal is a little slower than the speed of light.. there is also a few ms delay on monitors. This would explain "lag" I think?
nice, I just saw your comment after I spent 15 minutes formulating mine...
Just found StarTalk, and i must say - i am very satisfied.
StarTalk - Excellent !!!
The only thing COVID-19 has done which is good, is for the Disabled. For 30 years were told that we couldn't work. Zoom, and other things that let us communicate electronically every one is able to work. Thanks Dr Tyson and Lord Chuck, I love STARTALK PODCASTS ❤️
Not everyone is able to work because of zoom. In fact, my employer terminated all who either refused to comply with public health safety measures, or refused to come to work after things began letting up some.
Now, most people are going to hate the following sentences, but it is a reality.
Covid, along with far too many who were willing to educate, has removed MANY who would not be of much use to society on the whole.
Thousands and thousands of people who falsely believed the virus and vaccines were "fake" are now dead and gone. The virus helped return survival of the fittest, if only for a short time. Unfortunately, some who were otherwise fit were victimized by those who refuse education, but a massive chunk of the "weak" have been eliminated.
Covid has done some good things. Sadly, the good is easily swamped out by the reality that infection does not come with a specific list of direct targets.
I am fine with the adult deaths from this virus. They had their chance to educate. It is the children victims which destroy my soul day in and day out. ALL because daddy wanted to believe in pure fantasy. Daddy did not like actual reality and therefore attempted to substitute his own twisted version of what he wanted reality to be.
And I say daddy because a little over 90% of the uneducated deniers are male.
Covid basically returned a natural predator humans. Today's society truly needs to understand fear.
It needs to understand why a minimum basic education is not only mandatory under federal law, but also how said education can help maintain life while not actively placing others at risk. Such as their own CHILDREN.
Shoot, covid removed a massive amount of political party worshipers. Those are some of the worst people because they are absolutely clueless that it is We the PEOPLE, not We the Political party.
Covid did many great things while it was also doing a whole lot of extremely unfortunate and probably avoidable things.
Perhaps with this thinning, the next viral outbreak will not gain such momentum as this one obtained.
Wow that is so mind blowing! adding the spatial position makes time travel so dangerous. Not only are you traveling through time but you have to pinpoint the spatial coordinate. You could end up reappearing in the vacuum of space, you could reappear 3 km's inside the earth or 1000m under water. Plus I'm betting the Earth's orbit isn't perfect. Even if you traveled exactly 365.25 days into the future you could end up 1-2 km away (in any direrction) from where you left. Time travel? no thanks! that seems like a super scary concept now!
The sun is orbiting the Milky Way and the Milky Way is moving as well so even if you set your time machine for 1 year in the future, you will end up in the vacuum of space.
I used to think about this exact problem back when _Sliders_ was airing. How do they keep landing on the same planet even in different universes? I think a lot of sci-fi stories solve this by implying that gravity affects portals, or at least that's how I've explained it away in my own head.
Sooo, we know this is a thing that can happen, therefore the time machine would just need to add the calculations within it so you end up on the surface of earth. Just as he said, a space-time machine.
Yeah you will need a space time machine that can keep you alive in the vacuum of space. To have a time machine that can not only propel you into a future time plus calculate the distance to a very specific set of coordinates taking in the rotation and orbit of the earth, the sun, the solar system, the universe and any gravitational fields which subtly affect any of the aforementioned forces is way beyond anything we could program into a time machine in the near future. Sorry for the run-on sentence but OMG I'd love to be alive to see that happen but I severely doubt that.
@@kawasaket Calculating the coordinates is perhaps not the greatest challenge in engineering a space time machine. Designing cup holders that work in zero g environments seems daunting.
Love chucks excitement to such a simple topic
The first Zoom call was the Cartoon "The Jetsons". I remembered Jane Jetson holding a mask in front of her face because she had rollers in her hair. I thought how great to get to see family that had moved a long distance away.
Yessir first
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Can't get enough of your talk, guys!
That is a really interesting concept of us having disrupted the way in which Worldline work. Very cool, if not somewhat concerning for those that are linked in such a way that they never have an excuse to miss a meeting or whatever. As Chuck put it, a digital leash.
Just, egg
So glad I found y'all ❤️❤️
Fantastic real world analogy to truly learn these concepts. Ty
These two are great. The humor gives my mind a chance to catch up. Lol
I'm enlightened, with little, to no effort.
Genius symplified.
These two are absolutely priceless. 💕❤️💕
Space and Time machine, that's the TARDIS 😉 Love your show guys 💯
Time
And
Relative
Dimensions
In
Space.
From the Dali painting "Persistence of Memory," excellent!!
Awesome video!
Legends. Thank you again, so cool
We need to go back to just having house phones... emailing and zooming for work while I'm off work is the bane of my existence. I want to farm. Lol
Great video! 👍
This episode took control of my finger and forced me to click the subscribe and notification bell icons... Science is crazy!
Omg breacking the time and space continium, thanks for all the knowles and funny perspective 🙏🌍🇩🇰🌌
Love this video!
Not just 'Zoom" there plenty of online apps... StarTalk should be a mandatory part of a school science agenda for all high school students.
so that means that youtube not only break the space line but the time line, because am here watching a video and we are not in the same time or the same place, but am here listening and watching to you guys talk.
This show is so freaking amazing
This is a great episode
this needs to be longer
this is so amazing!
I love pedantic time machine arguments, and shall henceforth refer to them as spacetime machines.
I love you both
So this episode really changed the way I look at everything in life! World lines
Would it be beneficial if it was the opposite thing? An invention That doesn’t need your time, just space (location)?
A great episode I enjoyed so much!
First the zoom analogy, then cars accident analogy, mind blown.
These guys are GREAT ❕️
Fascinating
this is the craziest thing i have ever heard...and its been so simple this whole TIME and place
Chuck is just so awesome!
When contemplating time travel, I always wondered about the location of the destination; am I going to land in a field? in the middle of a wall of a building that existed previously/in the future?
I never considered the fact that because Earth is orbiting the Sun, I would land in a vacuum even a few hours forward or backwards. That satisfies so much curiosity I’ve had for a long time. Thanks, Neil!
Wow this was awesome!
I'm glad I watched this before I got into my time machine 😁.
I haven't thought about videocalling this way somehow before this video! By the way in Dutch calling = bellen which means the ringing of a (door)bell
Amazing content.. I started watching from one vid to another😂❤️
Tho u need a device to be in ur space to make zoom call or am I just confused after all that + trying that arm rotating challenge 😅😅
I am so addicted to this show.
Interesting. (Hud displays in many aircraft have a "velocity vector" indicator, which shows where you'll end up if you continue on the same course.)
Congratulations Chuck
If for some reason there had to be just one channel on RUclips, it should be this one. You guys are the best content, always. Thank you for all you give us.
Love you guys.