Einstein’s Special Relativity Theory | Does Time really Slow down

What is Time dilation? How speed of light affects space time? Let’s understand Time dilation with Einstein’s Special relativity theory.
To know more about in this topic (Understanding time and Special Relativity ) I recommend these books -
1. Book Name : Fabric of Cosmos (Brian Greene) : amzn.to/4g0RbBj
2. Book name : Relativity- The Special and the General theory (Albert Einstein) : amzn.to/3WX1woY
​⁠​⁠@Klonusk
To support on patreon (video script with high-res explainer art works) : patreon.com/Klonusk975
The examples shown in this video were belong to Brian Greene's lecture. If you want to learn more about Special Relativity Theory, I recommend watching Brian Greene's 11-hour lecture.
kzbin.info/www/bejne/jne5Y5mbgKl-b6csi=kKhksvsics4QAERD
Contact : [e-mail]
#speedoflight #timedilation #specialrelativity

[@kieranmilton2276]

The fact that Einstein came up with this theory in his head without technology is absolutely insane!

[@saimandebbarma]

You ignored one thing dear that we are the super technology i.e humans a complex one why complex ask yourself, just see around how we have done & what we have done so far either good or bad. It's just we have to use ourselves wisely in & out keeping everything in balance that's it. Means we have to use our brains wisely. Remember balance is the key to life & beyond! Thankyou 'God bless!🤍🙏

[@Imonagoodcushandalcohol]

I get what u mean but pieppe often renove certain factors from the yhought. For eg. They think einstein came with this idea from scratch. And he found gravity n all. He took 2 ideas and mixed them together. Still a super genius but not as genius as people think still genius tho but not as BUT STILL A GENIUS

[@yousefabdelmonem3788]

@@Imonagoodcushandalcohol who's a super genius in your opinion

[@nur7544]

he ate alien juice to be able to create this theory

[@thegreathadoken6808]

@@yousefabdelmonem3788 He just said Einstein

[@ravangersplaty9126]

This is honestly the most well explained video on special relativity. This should be shown in schools

[@Hernaner28]

Absolutely. I played like 10 videos with tons of views on KZbin but none explained it really well like this one, graphics and examples are perfect.

[@iuliak8411]

Amen.

[@Machistmo]

It’s the worst explanation ever. It’s overly simplistic and not reflective of reality in its attempt to exploit explain it

[@jack.d7873]

Its plagiarism from Brian Greene and its not the best explanation of SR that's for sure. A 3D geometric image of spacetime is the most intuitive interpretation of our universe. This tutorial is good but does not explain what time is, so is insufficient and unreliable, and certainly NOT worthy of teaching reality to others. This video should be removed from the internet for misleading its viewers into believing a false reality.

[@jszlauko]

@@Machistmo - Yeah, I just don't see how this explanation is accurate. For instance, with the two people on the train signing the documents when they see the light go on, what difference does it make if you are standing on the platform watching the train go by, or if you are on the train? This video states that the people watching from the platform will see the one person signing before the other one. WHY??? They stressed that the speed of light is constant. We also know that each person on the train is the same distance from the bulb. So, when the light bulb lights up, BOTH people on the train will see the light at the same time, and thus begin signing at the same time. And with the clock which is a light ball bouncing up and down, I can see where a stationary observer watching the clock race by them will see the path of the light ball being in a diagonal path, but so what? Let's say the clock "ticks" every time the light ball hits the top "plate". If the speed of light is constant, then the amount of time for the light ball to complete one cycle (ie: go down then back up) will be the same regardless of how fast the clock is moving. So how exactly is it showing a slowing down of time if the time it takes to complete a cycle never changes? Maybe I'm missing something here, but I just don't get it.

[@layneyancey4619]

I've watched so many videos on special relativity, and I think this is the first video where I can actually sort of understand it. Thank you. Well done.

[@smlanka4u]

Time-dialation is an illusion of charge. The specific charge changes with speed and changes the clocks. Also, the density of the medium changes the speed of clocks. You can find a better explanation from dialect. Everything continues from moment to moment even if some of them don't decay quickly on the nature of their waves.

[@faisal5950]

I agree with you same thing with me

[@TheNoiseySpectator]

​@@smlanka4uSHUT UP, LANKA! 🙊 Now that (s)he understands this, don't say things that will confuse him more. Wait until the idea has settled into his mind more, and he has gotten used to before you tell him something that will make him more confused. 😵

[@DioXin]

u slow or smth

[@Lertic]

This was by far the video that explained time dilation in the easiest understandable way possible. Now I feel like my brain is finally starting to grasp the concept. Thanks, guys!

[@horizongaming9112]

Its such a shame that this video has only 5k views while the information in it is priceless. Never understood these concepts in school. Our schools need to adapts to something like this so that the kids can get their concepts clear.

[@stewiesaidthat]

I thought you were against religion being taught in schools. If your religion is going to be allowed, then so should mine and all the others. Do you really think that Einstein’s Relativity describes this universe. That you will be granted eternal life at the speed of light. Keep religion out of public schools.

[@TheGreatKhan]

@@stewiesaidthatWhat religion are you talking about? We are talking about REALITY here. Not fairy tales, magic, or an abusive supernatural being that says he kills people’s family members because he loves them. Stop comparing education to your primitive ancient books.

[@stewiesaidthat]

@TheGreatKhan The Religion of Relativity. Or aren't you aware that it promises you eternal life? I dont know what rock you are living under, but Einstein created a fair tale Spacetime universe to peddle his religion. Example, Relativity universe - traveling at the speed of light, one does not age. One does not experience a moment of time. Real universe - an astronaut's heart rate is ACCELERATED on the way to the speed of light while the onbosrd clock is decelerating. Relativity universe - mass increases as acceleration I'm space increases. Real universe - mass decreases as evidenced by hot water (accelerated) having less mass than cold water. That solar sails are disintegrating into space on the way to c. The reality is that nothing can exist long enough to make to make it to c. Einstein’s Spacetime universe is a fantasy universe. Created to peddle his relativity theories when they weren't working in the real universe. Call it pseudo-science, religion, and BS. It's all the same. The fact that you are here, worshipping Einstein, proves that it's religion.

[@ProsecutorZekrom]

@@stewiesaidthatTime dilation is not only real but essential to our everyday life. GPS satellites measure the distance between themselves and Earth based on how much time dilation there is due to the difference in gravity between Earth’s surface and space.

[@stewiesaidthat]

@captainzekrom57 that's not time-dilation. That's information dilation. Clocks measure one's motion in space. A car slowing down going up a hill is not time-dilation as you can apply more force. GPS satellites do the same thing. Change the amount of force to compensate for the different environment they are operating in I suggest you do your own research and quit parroting Church of Relativity dogma.

[@thelasttimeibreathedwas4468]

I found this channel yesterday and been binge watching all of the videos. This channel would surely be on the top

[@harshatata2389]

So that is the reason at the end of interstellar movie, the daughter had become very old when compared to father. Time slows down when an object is in motion. Great explanation!

[@korporalkarrot]

I think technically in Interstellar, the time dilation is caused by the extremely large gravitational forces of the black hole, which is dealt with by general not special relativity. But the practical effect is the same, high speed/high gravity = the slower time ticks.

[@kaufmanat1]

It was the gravity. Not the speed. In his case.

[@ossiedunstan4419]

No time does not slow down when in motion. Time only slows down at velocities nearing and exceeding the speed of light, Time is only slowed in reality bye gravitational mass. The movie interstellar was an attack on science bye the christian evangelic republican party lead bye the most ignorant racist arsehole on the planet mathew macogney. Nothing on in that movie was based on science. It was like watching a creationist video on youtube staring ken ham, kent hovind and ray comfort.

[@bazzzanator9485]

No it is not, this is special relativity where as in interstellar it is general relativity causing the time dilation.

[@kanerylander1792]

People have already told u it’s due to gravity so i’ll skip past that. Instead, I’ll try to explain it the best I can through a comment. A good way to differentiate between special and general relativity is that special relativity is in fact a special case in physics. Specifically when there is no acceleration. General relativity, however, does consider nonzero acceleration. In fact, in general relativity gravity can be thought of as purely an acceleration. Exactly the same type of acceleration that you feel in the car or on a train! Now this is where it may get a little confusing: in special relativity, higher velocity causes greater time dilation; in general relativity, a lower potential energy causes greater time dilation (specifically gravitational potential energy). You can think of a person on top of a building for this. That person would have a greater potential energy than someone on the ground and would therefore be farther away from the center of the earth. Because of this, gravity would be a little weaker for the person on the building than it would for the one on the ground. Therefore, the person on the building would perceive the person on the ground to be moving slower than normal. This is a very basic and minimal intro into GR. To really learn it you’ll also need to learn a lot of tensor analysis. Really cool subject if you ever get the chance to study it.

[@animediaries8482]

I always wondered about theory of relativity. Due to complex videos, without good animations it was difficult to understand the topic.Your examples made it crystal clear. Now my concept is clear and I can explain it to anybody with ease. Thanks Klonusk.

[@llavvannyaa]

I watched one and continued to watch four more. Wonderful videos you’ve made. Outstanding explanation with amazing animation. Makes everything so easy to understand. Plus the speaking style is really appreciable. It’s simple, generates interest and doesn’t bore people out. Thank you for this.

[@Itsjebsy]

This video simply explains the concept for whoever struggles to understand after watching tonnes of other videos on relativity. Appreciate it!!

[@freetherapy-84]

It's still incredible to me that our brains can slow the perception of time in extreme moments and altered mental states. Had some incredible slow mo events during combat. Really changes how you view your mind and it's impact on your reality.

[@ke0_edits78]

How

[@PrinceGummy]

Indeed. Hence the saying "time flies when you're having fun".

[@tercerocastero]

I experienced this the 1st time early in life and is still the strongest it ever happened. Definitely thinking you are going to die or get hurt can do it to you. I fell of one off those huge tractor tires they used to put on playgrounds, was pushed actually and falling backward to the ground it seemed to take forever. Was hanging in the air afraid of hitting the ground, knew it would knock the wind out of me from past experience, then was wondering why I had not hit the ground yet and why it was taking so long. Then hit ... and got the wind knocked out of me of course lol Also, as I get older the saying for me anymore is "Time flies whether you're having fun or not."

[@Leonardo-Furtado]

This is by far the best, most well-explained video around this topic. Although there are many other really cool videos about it, yours is incredibly fun and intriguing. Keep it up!!

[@ztswift]

Honestly this is the best video I could find on youtuber, others got like 5M or 11.3M views, but I still didnt fully understand until I found this one

[@shivambhalla4525]

Wow man, you really nailed the explaining! I always struggle to explain the train part i.e. if a train is moving with the speed of light it and a person in the train say starts running at 5km/hr he will still be running with the speed of light. I find it hard to explain this as I’ve studied physics quite extensively while people I try explaining it to have not. But you my friend totally nailed it. I believe either you or the script writer are definitely physics pro! Kudos.

[@RajivKumar-ee7xv]

I still didn't get it. Speed of light is constant for static observer...why static observer will not plus 5 in that? I know speed is light is the limit, but don't know why?

[@mirceadinu46]

@@RajivKumar-ee7xv Also, what is clear is why the moving clock gets a different measurement and not why time itself has passed differently.

[@One.Zero.One101]

If you keep making quality videos like this, your channel is gonna be huge in the future. I wish you more success.

[@bk3461]

You're a genius! I've watched 100's of videos, many by even well known physicists, just to get a basic understanding to appreciate the theory, but I always get lost at some point because the explanations, illustrations & animations that get a little too complicated or vague. More importantly, their explanations at some point seem to forget that the audience are beginners and fail to address the logical questions formed in the minds of beginners.. It takes a great teacher to recognize that and explain any difficult concept successfully.. therein lies your genius! Thank you!

[@simplyriding1199]

I’ve seen countless of videos trying to explain relativity theory and time dilation. This video is BY FAR the best at explaining it! I’ve come to understand it before, but after watching this video I think I understand it well enough to be able to explain it to others! Big thanks for this!

[@kylelochlann5053]

Alright then, how would time dilation work with a mechanical clock instead of a light clock?

[@joshuadehler5039]

@@kylelochlann5053it wouldn’t. All these time effects ARE technically optical illusions.

[@kylelochlann5053]

@@joshuadehler5039 No, the optics are totally different and include the time dilation within the analysis, e.g. Terrell-Penrose effect, relativistic aberration, etc, etc, etc. Time dilation is a different phenomenon; the ratio of observer world-line length to the traveler world-line length in the coordinates of the observer.

[@holystone3736]

​@@kylelochlann5053can you answer your own question please? I seriously want to understand.

[@kylelochlann5053]

@@holystone3736 Time is nothing more than the distance along a world-line (a world-line is a time-like curve). Time dilation is the distance along the world-line of the observer to the distance along the world-line of the traveler. The distance between points has nothing to do with how they're drawn. For example, given a right triangle, the sine of an angle is the ratio of the opposite side to the hypotenuse, but it doesn't matter if the sides are drawn in pen or pencil or they're just a hypothetical set of points.

[@JonnyHavens]

This video is putting all the fragments I've picked up from other videos over the past couple days and putting everything together with a bow on it. Thank you.

[@Dragon-Slay3r]

110240 what does that mean?

[@KMMK2371]

Great for anyone who is not familiar with the Theory of Relativity, well explained and easy to understand! Thank you so much for this video! 🙂

[@AdityaMathis]

You made me understand 90 percentage of it . Easily the best explanation of time dilation !!Thank you!!.

[@hardhitter009]

BRO YOU ARE LITERALLY A MASTER EXPLAINER. Thank you so much for this video

[@arifinarifin3600]

Thanks! I think this is the best video that can explain time dilation. I can never imagine how it actually works (maybe because I’m not smart enough😅) until I found this video. Beautiful. Great work 👍

[@vikrantkulkarni768]

I have read so many articles and watched so many videos but no one explained it this well, hats off to the makers

[@arpitsrivstva]

*By this, it actually concludes that the ones who travel often or frequently are younger than the ones who don't. (?)*

[@RajiaSultana-zx2ng]

Yes, it does but it's so low its negligible. By theory your head is older than your feet. The person on ISS is 2 nano seconds older than what he should've been.

[@Camirritelecul]

@@RajiaSultana-zx2ng no, 2 nano seconds YOUNGER

[@Yogi_116]

I have seen so many videos to get the concept of relativity, but this video is the best . Easily explaines such a complex concept.

[@babutechmbr4860]

You made me understand 90 percentage of it ✨

[@vesakoskelainen]

Was going to say the same thing

[@xa-27-animesh3]

😂😂 bruh he isn't even explaining 10 percent of the theory how do u understand 90 percent of relativity theory it's vast, don't just say things like i understood 90 percent of it it's disrespectful

[@ThiyaguShanmugam]

This topic is so interesting that even if I watch 100 different videos on this subject it still doesn't bore me. Btw, your explanation was so much better than other videos that I watched.

[@RamThePerson]

In conclusion: Einstein was high.

[@MohamedKhaled-wc2ce]

WOOOOOOOOOW, A piece of beauty of how well-explained, well-viewed, and talented way of learning. Can't thank you enough

[@Odinhaus]

In the moving train example, the real explanation is due to the fact that the passenger on the left (relative to the platform observers) is closer to the observers at the time the light signal reaches the passenger. Thus, the observed light signal needs to travel a shorter distance to reach the observers, so it arrives sooner. The passenger on the right is traveling away from the observers, and is therefore farther away when the light reaches, so it takes longer for the observed signal to reach the platform in that case.

[@danmoore3660]

That's what he said.

[@joshuadehler5039]

Yup, hence, an optical illusion by definition

[@C4Cold]

Why isn't it the same with speed of light?

[@bryansevillana9374]

Best explanation and graphic representations I have ever come across here, thank you and great job

[@patlafleche5140]

I feel like I’m the only 1 out of all my friends who watch I learn about this kind of stuff , therefore I feel like I know more than them…. Does anyone else feel like this sometimes.. i live on a reserve in Alberta Canada, although when im out around other ppl I don’t know, I often wonder if they know as much stuff that I know… lol

[@Shadowedsymphonybts]

Same here.. They're only limited to books..

[@piuskimutai4022]

Hi 👋

[@chantujee]

This is the very well explained video on special relativity that every student should watch.

[@MartinSaintXXL]

This is an awful and misleading video. The "light clock" example is very wrong, not only for the fact that no such clock exists, but you FALSELY state that "slower tick tocks mean time runs slowly." If light were to take a longer (diagonal) path then, of course, it would take a longer time to do this - so at no point have you shown that time "runs slowly". What you have done there is confused clocks with time. You also FALELY state that there is a stationary clock when there is not. If there is a (constant) velocity between the 2 clocks then each clock (or an observer with the clock) can regard themselves as stationary - in their own reference frame - and regard the other clock as moving (relative TO them, and only to them). Therefore each observer will see (measure) the other clock as going slower than theirs. It should be obvious from Einstein's first postulate that as the laws of physics are the same for each observer (and clock) there are no forces acting to physically slow either clock down, and that if you have 2 clocks they cannot each be going slower than the other, so any perceived slowing down of clocks must only be an observing or measuring effect and not a physical effect. This is especially true when the fact is stated that time cannot slow down anyway because it does not have an actual speed to begin with - just try writing down what speed you think time is "flowing" at and what you get is not a speed under and physics definition. The Hafele-Keating experiment and the muons examples are not experiments which are part of "Einstein’s Special Relativity Theory" (from the title of this video) as both involve acceleration, and niether experiment describes what time is or shows that it has changed in any way. The stupid example at the end involving the friends also includes acceleration and is pure fiction - it has never been done so it has never been confirmed to be right. Clocks can slow down (as in gravitational time dilation - where a stronger gravitational field strengh will slow down even an atomic clock's mechanism) but time cannot slow down.

[@goyolake]

This is something that was puzzling me regarding all these experiments with clocks. If each observer took into account the acceleration as a variable in their experiments with clocks, in the end the time elapsed should be the same for both, even though the clocks themselves can show a different result, right? Similarly like the person throwing a ball at 20 km/h inside a train traveling at 100 km/h, he might observe it at 20 km/h, the runner going towards the train at 10 km/h might observe it at 130 km/h but the absolute or """true""" speed of the ball is 120 km/h from a stationary observer.

[@MartinSaintXXL]

@@goyolake If I understand your question correctly, then yes. Any single event only lasts for one specific duration, but it will depend of your acceleration what you measure it to be. The greater your acceleration then the slower your clock will tick. So if you know your acceleration (relative to that event) then from your (slowed) clock reading you can work out the actual duration of the event. The point about Special Relativity is that there is no absolute or "true" speed of the ball. Every observer is correct about the speed of the ball - REALATIVE TO THEM, ONLY.

[@andrewfaniku]

This is the first time this concept makes sense to me. Thanks for making this simple and clear.

[@jrgaskin01]

so light has already seen the end of the universe.

[@sridharfc]

This is the best video I came across on time-dilation. Thank you for this.

[@freebk161]

Simple easy to understand explanation with superb graphics/animations of one of the complex theories !!! Thank you very much !!!

[@francisdiaz2616]

This is by far the best explanation of time dialation i have seen yet

[@akashverma7018]

Mind boggling and by far the easiest explanation! Please watch all the videos which comes in series before and after this. Kudos to the channel🍻

[@BrainOSci]

I DID'T BELEIVE SUCH A HIGH CONTAINT WITH EASIEST EXPLANATION I EVER HAD !!!!! I APPRECIATE FROM THE INNER CORE OF MY HEART AND YA REALLY THANKS..

[@ossiedunstan4419]

Fruit loop any one.

[@BrainOSci]

@@ossiedunstan4419 YUP!!!

[@LifeStylePandora]

THE BEST VIDEO OVER TIME DILATION EVER, ALL OTHER PEOPLE POSTING CRAP, BUT YOUR VIDEO SHOWed THE BEST WAY TO EXPLAIN IT. KUDOS TO YOU, AND THE BEST PART IS YOU ALSO SAID IN LAST SECONDS OF YOUR VIDEO THAT ITS JUST A THEORY, HOW WE CAN TEST IT, ITS A DIFFERENT MATTER.

[@nrusimhanseshadri9993]

this is one of the best explanations of relativity I have ever come across, a masterpiece

[@arifbhuyan3122]

This is the most understandable explanation.

[@derekr4123]

first video that actually made good sense of special relativity. thanks

[@jswizzlerizz]

I don't know how many different videos I've watched on this and while I totally understand the concept, I still have so many questions about what happens on the train.

[@masonsteven77]

Best video I have ever seen explaining the special theory. Whomever produced this is a genius. Well done. Cheers

[@UmeiheukwuLawrence-hn9jp]

Now I get as an object is in motion time slows down, pressure is weaker now I get Thanks Alot for your explanation

[@randomgeek6035]

Love your videos, man. Good and simple graphics, good explanations, short(but long) enough, chaptered for the ones in a hurry and a comfortable voice to listen to. You'll definitely get hundreds of thousands of subs, just give it a little time, and get a shoutout from @Veritasium Just one comment. Be more careful with your wording. As you open your video, you seem to forget that gravity amongst other things move just about as fast as light. I'd rather turn it around and say that light is the fastest thing we know. Looking forward to more videos.

[@AbandonedMines11]

Really enjoyed this video! It nicely demonstrates a lot of the principles Brian Greene explains in his book “The Elegant Universe.“

[@utkarshGrows]

Very well explained. This is the first time I have understood why time slows down for a moving frame of reference. Your explanation aided with animation are very easy to understand.

[@drgroove101]

I've watched and read much on this topic, and this video explains it the best! Well done

[@school3614]

bro I don't get why you have only 16k subs, your content is incredible

[@kpm3983]

This is by far the best video on Einstein’s time theory. Very nicely explained. Thank you so much

[@KingsleyIkpa-agodo]

I think this video was clearer than any I have seen so far on this topic.

[@tomshepard9050]

The light clock is GENIUS - I could never visualize time dilation before until this example.

[@dufo4766]

Excellent presentation of time dilation, one of the best I have seen, congrats!

[@Rishith198]

Your Explanation was very simple , clear and straight to the point, absolutely amazing! Thank you so much for such a wonderful video, you earned a sub! :D

[@sustudies2117]

the way you present the topic is appreciable , even though hard topic seems easy to understand the best physical conceptual platform.

[@ginyouforce616]

Einstein was a genius. When I first came across this concept, it completely blew my mind. But a lot of special theory of relativity ideas were built on existing ideas like Lorentz transformation, etc. The general theory of relativity was where he showed a complete mastery of his understanding of physics. It was literally light years ahead. He, along with Newton, are the real goats.

[@Alexis-nh1rh]

So far the best video that explains something so complicated very simple way! Thank you❤

[@headbiscuits]

Wow thank you. This is the first time I actually fully grasped this concept. Amazing.

[@kalyannatarajan1695]

Explained with awesome clarity and extremely clean graphics …..kudos and thank you …..👏👏👏👏🙏🙏🙏🙏

[@IncredibleNewsE3]

What we commonly refer to as 'time' is, in fact, a mechanism. If you think of time as a constant, like a clock, it might lead to confusion. In reality, what we describe as 'time' is a series of simple cyclical actions. Each object follows its own unique cycle. To gain a better understanding, envision 'time' as individual cycles. It behaves somewhat like heat, with variations influenced by gravity and the rate of space flow (where 'gravity' represents space itself). The main challenge lies in interpreting the terms we use. 'Time' may not be the most accurate word; 'cycles' might be a more appropriate choice."

[@rudrasingh9831]

First time I have seen someone explaining these complex theory in such a simple manner. I loved it ❤

[@ShadowPlasma832]

I never understood time dilation properly until now, thanks for the great explanation.

[@tmada8270]

it took me today and this channel to understand all these things, simplicity at best

[@hussen8202]

WoW you are a genius , I’am working since two mount on file about this subject, I saw videos and read books in English and Arabic and French , but your videos is so clear and amusing

[@kaz2986]

I've watched heaps of videos on this topic but this was the first one that made my dumb brain comprehend what's going on. Thank you for that

[@arjunramachandra6757]

Crystal clear explanation on such an interesting yet not so easy to describe topic

[@sanaru30]

All my life since childhood, I was not able to understand until I happen to come across this channel. I'm still not super clear but I can grasp the concept. THANK YOU. I agree Eisenstein is truly a genius, much ahead of his time. Grasping time concept is so fascinating. Reminds me of Hollywood movie which I can comprehend now.

[@stewiesaidthat]

Einstein is a fraud. He plagiarized everything not understanding what he was stealing. Einstein-> nothing cam travel faster than light. That makes motion absolute. Einstein-> light travels in its own frame of reference, independent of its source. That makes motion absolute (bounded) to the frame of reference. So why the Relativity nonsense if motion is Absolute? Einstein's relativity has never been validated. Nicholas Tesla was highly critical of Einstein’s theories calling them mathematical nonsense.

[@ksnp]

Oh my god! This is the best video of the theory of general relativity. My brain got opened to it finally!

[@MischiefManaged18]

This is the best explanation I've come across !

[@kwkuma]

❤❤... I tried lots of videos to understand these orinciples... But this was the most understadable ever found upto date... Thank you so much sir.. 👍👍👍

[@the_EconomicEdge]

This video explains it in laymans terms therefore being easy to understand. Thank you Klonusk.

[@the_EconomicEdge]

Klonusk deserves more subs.

[@harshvardhan6031]

I loved the way u explained such complicated things so nicely,❤️❤️ I am curiously waiting for ur next vedio..plss do fast

[@khantzinhein2415]

This is December 25th of 2023. Yes, it's a Christmas day and I am unlucky that I have some issues to celebrate Christmas this year which means no gift for me. So I'm scrolling KZbin and found this video. This really is a gift for me. Thanks gazillion ❤️

[@paulzhang4810]

The train example has helped me understand the theory a lot more, thanks!

[@jszlauko]

Except that the train example, as far as I can tell, is completely wrong! Neither leader in the train is moving away or towards the light flash, as they are both sitting the same distance from the light flash. How can one say that an observer on the platform would see one leader moving towards the light flash when the light flash itself is moving away from the observer? They are mixing apples and oranges here.

[@paulzhang4810]

@@jszlauko I think it is because light moves at the same speed to the observer's perspective regardless of where the observer is. And so if the observer is outside the train, he will see light move at the speed it is supposed to, even if the train is moving. And so to the observer outside the train, light within the compartment moves at a set speed, while the two leaders themselves are moving at different speeds, which is why it appears to reach one leader first.

[@jszlauko]

@@paulzhang4810 - I realized my mistake after further research. It’s like you said, in that to the observers, the speed of light is constant. What it really comes down to though is that nothing can go faster than the speed of light, regardless of what it’s being related to. Thus, when the light leaves the source and is heading towards the one leader, normally its speed relative to the ground would be added to the train’s speed, so you’d have the speed of the light relative to the ground as the speed of light plus the speed of the train. BUT, since nothing can go faster than the speed of light, the light going towards the one leader is just the speed of light, as it cannot get that added speed of the train. Thus, the light arrives at the one leader later than it does the other one.

[@paulzhang4810]

@@jszlauko I think I get what you are saying, but I would like to add a few ideas. EVEN IF the train were to travel faster than light, light itself will still travel at its predetermined speed. This is because light is not a mass -- it is energy. It is not affected by the movement of the train. And so no matter where you stand, inside or outside the train, light will appear to you and you alone to be travelling at its predefined speed. If you are inside the train, light will travel at its speed. If you are outside the train looking in, light will travel at the same speed, but appear to reach one leader first. It's like Schrodinger's Cat -- there's simply two scenarios in this case and both are real, both are possible. This is my take on the example, and I'm not sure how accurate I am. But this example explains the experiment scientists did with two clocks (where one clock, brought on an airplane and flown around the world, ended up being slower than the other clock that stayed stationary).

[@nikkitytom]

Thank you ... THANK YOU! I've pondered over this for years finally just accepting it as something I could never truly understand. But that light shown travelling inside the train being observed relative to the speed of the train by the stationary observer makes perfect sense! 👍

[@drakliveplays]

I was so nervous earlier with my job interview and while waiting I was listening to a song to calm myself because my heart was beating so fast. I noticed that the song feels slower than usual and suddenly it went back to normal. It happened again it slows down, went back to normal, slowed down again, and back to normal speed again. Everything felt so slow for a split second.

[@andrewpham3933]

Already know this will be a banger of a video before I’ve even watched it ❤ thanks man

[@sajawalhassan1f12]

In a nutshell, objects with mass have different speeds relative to different people ensuring the time it takes for said objects to do or reach something or someplace is constant for all people. However light ensures that it's speed is constant for all people, resulting in the time it takes for light to reach someplace being different for different people. Its a trade-off between time being constant for all (objects with mass) and speed being constant for all (light). Crazy that Einstein developed a theory like this, the guy is smart as hell.

[@DocterKankle]

I wonder if this relates to the idea that: For older people that have worked until an old age , if they retire or "slow down" they usually pass away. Think an object in motion stays in motion. "If you don't use it , you lose it" kind of thing. I wonder if those who physically move more throughout their lives have a tendency to live a longer life.

[@catalinamarquez6937]

Thank you very much to everyone make this beautiful KZbin platform amazing❤❤❤❤❤❤

[@ShubhamKumar-wj3fu]

Please post time dilation due to gravity video ASAP ! And thanks for this awesome explanation. 🙏

[@sampadhasam9204]

In that case , can i say that if i was moving contionusly around the earth for my whole life in any vehicle with a constant speed , i can have longer life than my twin ? ( even though it might be negligible)

[@emmaaxtell798]

Finally a Relativity video that makes sense!

[@HolyDaniel2008]

This is fantastic. Congratulations!

[@brabuspower100]

After years of sort of understanding, i now do. Thanks a lot. Great video .

[@yathishsarathy6418]

Kudos- when you have clear grasp of concepts, you become the best of teachers 💪 - The only thing I would add is that even if the “Time” that’s been used here is based on measuring something moving (or displaced), like a clock’s hand, you will have the same amount of slow-down as the light clock..when something moves faster (getting closer to C), it gains more inertial mass and hence slows down (like someone strapping on more weights when running). But, does “Time” exist outside of this context of a measured entity? In some absolute way? our minds intuition seems to think so.. but it won’t be scientifically measured or proven

[@999inf]

This is the best video😍 I have ever seen explaining Special Relativity

[@Pedro-s4k3y]

Thank you for this explanation of time dilation. It is well explained.

[@mhoover]

The photon clock shows us that time doesn't slow down, the clock slows down.

[@AMC2283]

how's that when c is a constant speed?

[@mhoover]

@@AMC2283 You're right. Remember that the photon takes longer to go between the mirrors because it has farther to go since it's moving at an angle. Since it's stuck at c the clock ticks slower. If time slowed down it would move at something less than c.

[@AMC2283]

@@mhoover yeah, ergo time is relative

[@mhoover]

@@AMC2283 that's what I mean when I say time doesn't slow down. You measure time by the ticking of your clock, but as you whiz past everyone sees you and your clock slowed down. But since you look at them and they and they're clocks are moving slower then clearly "time" wasn't affected. Only the appearance of time.

[@AMC2283]

@@mhoover non inertial frames aren’t equal. Time is relative and slower for the faster observer

[@RPMhunter]

This video deserves more views honestly

[@finnerutavdet]

I have the same way of thinking (visually), and this is the first video I've ever seen on this subject that actually makes sense :-)

[@frankyjayhay]

The agreement signing on the train is a brilliant illustration. If the train went fast enough the light signal would take hundreds of years to reach party B so everyone on the platform would have lived out their entire lives without the agreement ever being signed but Party B would claim they signed it seconds after the light signal was emitted. It would be great if you could do a similar video on the twin paradox explaining in plain English where the time actually gets lost for the returning twin, I've seen graphs and formulas but no explanation how the time gets physically lost.

[@shahrosetariq]

Last example seems incorrect. The guy on the rocket is the one for which 40 years should pass???

[@RenjaManmar]

Great video. Really well explained. One thing I can't wrap my head around: if a rocket left Earth at close to the speed of light and someone on the rocket looked back at Earth, then wouldn't it feel like they were still and the Earth was travelling away from them at almost light speed. The reverse would be the case coming. Therefore why is there time dilation either way? Wouldn't it cancel out? If you watched the light clock moving away from you, then it would still look like it was bouncing directly up and down. Any ideas?

[@AMC2283]

non inertial frames aren't equal, the ship is exposed to more acceleration

[@emmanuelbazimya2057]

🤯 I always see this in Sci-Fi movies and TV shows but never really thought about it.