The fundamentals of space-time: Part 1 - Andrew Pontzen and Tom Whyntie 

It reminds me of Albert Einstein's quote : "If you can't explain it simply, you don't understand it well enough." It's so amazing!

As a person who hated physics in high school, thanks for making me feel intrigued by physics again. I'm actually clicking the part 2 video. Awesome. This shows how well-crafted animation videos can make abstract ideas concrete to layman like me.

me: trying my hardest to understand what the heck is going on my brain: why the heck do they only have four fingers per hand

Either this animation has explained the concept brilliantly or its just making it too simple to be accurate.

Still don't get it

i love how enthusiastic the person talking is! :D

Schools: No! Youu can't learn physics and animation together Ted ed: Hold my cup😜

These fellas are ADORABLE!

Wow TED-Ed, you really makes it all sound so simple. I really love this animation.

wtf am i doing here. i got a test tommorrow and now im just watching sone guys talking about spacetime

This is absolutely the best explanation for the space time diagram.

I'm 18 months old and I understand this.

That moment when you're a seagull and you become a cosmic ray. Mood

i feel like Einstien

When you try to explain space and time to others but they just assume I'm talking about clocks lol

Very nice, has taken me just one step further to understanding brief history of time, going to read it again. By far, better than rest of the videos on space-time.

What a brilliant illustration.. Relativity isn't so intuitive and you and its not always easy see the picture in the equations. Great job!!

Just listen to me, I'm not kidding. Last night I was wondering about space-time while sleeping and the next day i got this video on my recommendation. I have never searched anything related to space time ever in youtube or in Google.

This has got me thinking about both space time, and how/why they went for 2D/3D animation at the same time

It's probably the only video on RU-vid that has defined spacetime in the best possible way.

Flipbook is best way to explain space time. Couldn't find any better video explaining space time like Andrew and Tom did

My smart friend: space-time Me: is that like face-time?

Love your videos 😊 thanks for making them

Excelente vídeo. Philochrony is the theory that describes the nature of time and demonstrates its existence. Time is magnitive: objective, Imperceptible (intervals) and measurable (duration).

Once I finally was able to realize that time only applies to objects within space and not space itself the relationship between the two became much more clearer for me.

probably one of the best explanation of space-time iv ever seen

cant wait for part two!!!

Cant wait till the next animation!

I watched tons of vids and this one was the only one that I understood thank you very much

Imagine you all are in the Space time flip book !

Superb superb man . How could I thank u for making this video , very well explained. Greetings

Better explanation than a textbook. Thank you TED

For us humans, we experience space differently to time. We can move backwards and forwards and sideways in space but we can only move forwards in time. Also we can move through space faster (in less time) but it seems that time decides for us how fast we move through it.

Great! Very well done. Where's part II?

Elegantly put. Well done.

Finally an educational video of spacetime I can keep up with.

Nice video :D I'm still sure that time is a big ball of wibbly wobbly timey wimey stuff but well now I know some of the details.

Maybe one of the few ted ed vids i finished not having to gasp for more air.

Mind blown I actual I learned something

Excellent video, beautifully animated. Physics teaches us what we should know but always forget, 'it's always good to see things from different perspectives.' I think that goes for all the negative commenters who say this is 'too simple'. Too bad not everyone can be as worldly or as intelligent as you all. Pff

My eyes: watching My brain: what's for dinner?

I loved this explanation but sometimes when I don't get it properly I just re-watch it again and again......Thanks TED Ed for brilliant content.....😌

Can we take a moment to appreciate the animation and the narrator ?

めっちゃわかりやすいです！

A very good explanation. I love TED ed.

Just loved it........super simple explanation...thanks :)

Wow pbs did. Videos about these lines and I didn't get it but that was explained so well...bravo. And thankyou

My brain got lost somewhere in space time

That was the best relativity explanation I've ever seen.

I wonder if they are going to come to the conclusion that time progression is actually an illusion and that all time (past, present and future) exists simultaneously as does all possibilities. Good video. I like the idea of baby steps in explaining complex topics.

im 13 and i watched this video voluntarily without any knowledge and i get this

Good stuff. Never stop learning,

Wow phenomenal for teaching!

This should be shown in every school and institute

Space and time are relative, the more time I spend with my relatives the more space I need

Absolutely mind blowing

this makes it so clear

Nicely done!

Really nice! Thanks alot!

i really did not notice time passing.good work

as an animator who loves learning about space this makes me happy lmao

On a scale of 1 to 10 how much of the video did you understand Me: yes

People assume that time is a strict progression of cause to effect, but *actually* from a non-linear, non-subjective viewpoint - it's more like a big ball of wibbly wobbly... time-y wimey... stuff.

gr8 stuff!1 thx. any links to parts 2 and beyond, plz?

Wonderful!

Oh I love this. ^^

Simple but very useful this time I got it thank you very match please some more

Please please please make a series with them

This is brilliant

Sweet this is by far the best explanation for the worldline ❤️❤️

I want so hard to understand! I need to understand! But even when broken down like this into bite-sized chunks, my brain struggles. But alas! I will persevere!

great. thank you.

I thought I had a decent understanding of space-time via Einstein's special theory of relativity. So I was surprised that I really didn't understand this video. Is it just me?

I haven’t slept for a while and figured all this out and tried to explain to ppl and they think I’m crazy

As a visual/kinaesthetic learner, I learn more through watching RU-vid and cross-checking info in a Library than I did over 5 years and $50g worth of university 😓

The next animation needs to be today!

R u doing this on head squeeze also, I loved the vid about time travel

Pls make a second part

Really nice explanation and good animation.. 👍

I enjoy this video!

Great video, thanks TED

Me: HEY I PASSED SCIENCE ONCE I SHOULD TAKE ON ALL OF SPACE future me: why can't i just h a v e a b r a i n

after big bang, time was moving forward and our reality flip book just flip at the rate of the remnants

The Sagnac effect proves that 1 observer travelling towards the light in a curved line path measures the speed of light as c + v . The key is that the radius of the curvature can take any value in the formula. I chose R tends to infinity and I find c - v and c + v in a straight line.

In Australia we measure spacetime as "kilometres per hour". my car strangely enough has a meter just for this purpose.

It is crucial that you understand the difference between the Newtonian world view that the axis’s of your graph remain unaffected by motion. You simply rotate the graph within them to get the relative perspective you require. But the speed of light is “special “ you can not rotate its world line when trying to view from the perspective of a moving observer. So the only way you can get the moving observers world line vertical without affecting the world line of light is to consider the graph paper as a rubber sheet, call the sheet the space time continuum, a single thing, and stretch and squeeze it in a manner that results in the observers world line being vertical, but the world line of light remaining unaffected. The result will distort the time and space axis, which Newton said did not happen anywhere in space at any time. If you read off the position of a point that has suffered distortion on the undistorted axis, it will show a smaller reading than its original position before distortion had taken place. Time moves slower for a moving observers and distance shrinks it the direction of motion, but they would both agree on the speed of light.

Ok, where is the next animation? The interest is peaked!!

Amazing Thanks

Even if you create a whole one hours video instead of parts, we're going to watch it

Instead of complicating things, you can simply say just like length, breath and height, time is also a dimension. That gives us our 4 - D. And that's true we move through time as well just like we move through length, breath and height. Although there is an exception too, we haven't yet figured out a way to move back in time

Woah! this is so simple yet so informative! thanks, Ted-ed!

I watched it twice now. I understood clearly each word . But my brain still cant process it

when is going to be able the 2 part?

it's like The 11th and the 12th dr. giving me a good explanation :D

Oh..the animation is great😂

i have no idea how i reached here but this is my 12th video watching.. wow.. i aint doing my homework or anything but im learning something..

Ahh, it's the Head Squeeze guys! :D

Soy docente en Colombia. Agradezco mucho los subtítulos en castellano ¡Ü¡

2:39 he said I guessed it........but i didn’t

How does gravity warp space time? And what does warping space time even mean? Does that mean gravity slows down time or speeds up time?