General Relativity Explained simply & visually

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Albert Einstein was ridiculed when he first published his theory. People thought it was too weird and radical to be real. Einstein wasn’t satisfied with his theory either, because the theory did not apply if Gravity was present or if the observer was accelerating. One day, while observing a window washer on a ladder near his patent office, he had a thought experiments.
He imagined what would happen if the worker were to fall. He put himself in the window washer’s perspective, and imagined what he would experience as he was falling. He realized that if he was falling, gravity would be the only force acting on him. He would be accelerating towards the ground, but since the ground would not be pushing up on his body, he would feel no weight. And this would be no different than being weightless in space.
In a way gravity and acceleration were different ways to describe the same thing. The way to connect gravity in the theory of relativity was through the idea of acceleration, and this became the basis of general relativity.
Einstein imagined being in a room with no windows, and a bathroom scale. It would weigh 80 Kgs, What if the room was on a space ship accelerating in an upward direction at 9.8 m/s/s. He would feel the same weight. There would be no difference
He imagined what would happen if he took a flashlight and pointed it from one side of the room to the other, as the space ship was accelerating upwards. If he had a ruler, he could measure the height of the light on the other side of the room. He realized that the height measured on the wall would be lower than the source of the light, because the floor of the room would be rushing upwards at ever faster speeds, as the light was propagating across the room. The light beam would appear to curve downward.
However, If you were on earth, and you measured the two heights, you may think that there should be no difference. That light should go straight to the other side of the room. Einstein thought it can’t be because it would violate the principle of equivalence. Acceleration of the room on a space should be no different than the room under the influence of gravity on earth. He realized that this meant light must bend in the presence of a gravitational field.
But light should be going on the shortest path. Then he realized, maybe the shortest path between two points is not a straight line but a curved line near gravity.
This was the key insight that Einstein had about gravity. But in order to express this mathematically, it required very complicated mathematics that even a genius like Einstein could not easily figure out. He contacted an old buddy from his college days, mathematician Marcel Grossman.
It’s important to note that the trampoline analogy you normally see on TV shows and youtube videos like this is a 2D plane used for visualization purposes only, but it is really in 3D.
In order for this theory to really be taken seriously, it had to make a prediction that could be tested, which was confirmed by the fact that it explained Mercury’s orbit which had been a mystery for decades because it had a precession. General relativity predicted exactly the precession that Mercury actually has.
But many skeptics still remained. The most fool proof confirmation came 4 years after he published it,when a team led English Astronomer, Arthur Eddington. in 1919, photographed stars near the sun during a total solar eclipse. He found that light passed near the sun was bent by the curvature of space due to its gravity. This is the moment Einstein became a celebrity.
#generalrelativity
#einstein
Why is this not just a distortion of space but also of time?...because special relativity says that light always moves at the same speed regardless of perspective or reference frame. This means that light will have the same speed in an accelerating reference frame as it will in a resting reference frame. But since the distance traveled by the beam of light in a gravitational field is longer due the curving of space, in order for the speed of light to remain constant, time itself must pass slower in the gravitational field relative to time in empty space.
General relativity does not answer everything. Although it tells us how gravity works, it doesn’t really tell us what exactly it is.

[@kirom4265]

Now I know how my dog feels when I'm talking to it.

[@Medical_world__]

Underrated comment 🤣

[@nishantkishor]

My man

[@monkeymonkerson]

lmao!!

[@silviyathakur]

this is so true ekfkefjjerkfn

[@chrisballesteros6181]

*wags tail.. smiles back

[@dwhutto]

This channel is incredibly good at explaining concepts that I've heard hundreds of times, but presenting them in a way so that I can actually UNDERSTAND them.

[@scottmiller4295]

physics by eugine? is another great one for complex stuff like this. their animations and repetition really push the points well.

[@informationparadox387]

@@scottmiller4295 Yeah!!...Its just a great channel!😍🤗

[@blaze1148]

twit.

[@Ziggazaaaaa]

I had exactly tgebsame thought lol

[@EXOPLANETnews]

Hey guys if u love to learn quantum mysteries then visit my science channel u gonna love it

[@kimiya_s__]

Watching videos like this at 3:00 a.m. instead of sleeping just hits different

[@masonsteven77]

I have watched dozens of videos about relativity in an attempt to understand it completely. I have read Einstein's book called relativity, and I have talked to physicists about this in real life. This video does more to explain the theory than anything else I've ever seen. Thank you and cheers. I still don't totally understand relativity, but then again, I'm told there's only about 12 people on Earth that truly do.

[@greatspirit]

Ditto what Steven said. Toda raba.

[@masonsteven77]

@@Asthepersianssay That's what I saw in a documentary. There aren't just 12 people (that was 10 years ago) understand the concept of it. That would be ludicrous becusse there are God knows how many videos on KZbin exist explaining the CONCEPT of relativity. They were referring to the number of people that can understand and DO the math.

[@emo_galaxy9413]

and none of the 12 agree!

[@DaBeezKneez]

Einstein himself doesn't understand it.

[@mahtabehmad]

lmao

[@Ketooey]

Out of all the explanations of general relativity I've watched, this was the most understandable to me. Thank you for not assuming knowledge on my part, and breaking things down for true laymen!

[@DipsticksOfficial]

It's been a very long time since I last learned so many interesting facts from one short video. Thank you.

[@johnmartin7124]

Extremely good video! I took physics in college 50 years ago. It still amazes me. You are good!

[@gjojxduijv9152]

Explain me please I can't understand

[@josher14xx21]

When you finally have that lightbulb moment on how time affects space and are just mind blown😱😱😱

[@jonbones6487]

How can time, a made up "magic" by humans for our perception, affect space.? An object that we've still never seen

[@wendys3428]

I’m just an 11 year old, but I don’t get how Albert Einstein had the free time to think about this

[@ArvinAsh]

You have just as much time as Einstein did. Making time is a matter of having priorities.

[@wendys3428]

@@ArvinAsh clever

[@rayjasmantas9609]

Turning to the basic quantum theory of support, it is actually examining united sharing states of tiny particles, and how their shared behavior is disguising what is their real mass.

[@JoeyoyYT]

Here's my theory. Gravity is, on a large scale, the motion of consciousness being pulled toward a singularity. On a small scale, gravity is the projected thought, whether (through a physical, mental or spiritual lense) in downward motion again projected at nothingness(the singularity). A physical thought expresses as an action, a mental thought as a thought as we know thoughts to be, and a spiritual thought as a multi-dimensional scalar wave of consciousness dispersed from the spiritual anatomy tied to our being. Gravity is the perceived motion of that which is directed toward nothingness. Considering empty space is all around us, emptiness is not synonymous with nothingness. So I'll leave you with this, no scientific question, not even if it's purely mechanical in nature will solve the all pervasive spiritual reality that underlies and subjugates all matter. Thank you Einstein for the theory, but it's simply the mechanism of space-time as perceived from a 3rd and 4th dimensional lense. We are not just 3rd and 4th dimensional beings. Much love.

[@ganeshr5]

How do we extend the principle of relativity that was demonstrated by Galileo and Newton gets extended to accelerating reference frames (non-inertial) like in the space ship vs. on the ground? Also according to the law of inertia, the inertial reference frames' motion is along a straight line as in the case of special theory of relativity and non along a curve.

[@doncorleone7940]

Shout out to the window washer. Without him this video would not exist.

[@mathematicalninja2756]

And to the apple that fell on newton's head. without that, newton wouldn't have invented gravity (just a joke, chill bois)

[@jfq7223]

Shoutout to fruit and dirt.

[@christianmotley262]

I'm old but you're welcome.

[@pierfrancescopeperoni]

@@mathematicalninja2756 And if Newton hadn't invented gravity, the window washer would not fall.

[@NumeroCinko]

@@jfq7223 thats hilarious 😂😂👍

[@asdf7219]

When you see it, it's like oh cool. But when you actually start thinking about it, it's so insane.

[@devinotero1798]

kim iamkajorn why did you have to put your ego in here smh the comment section was a vibe

[@ninjaslash52_98]

Yeah when he did the thought experiment and explained Einstein’s “maybe it is taking the shortest route” I finally understood

[@tylerchristensen7480]

@@ninjaslash52_98 I’ve literally just been thinking about how mind blowingly cool all this stuff is. Mostly it’s just admiration at Einstein’s ability to forget everything he thought he knew and question everything. This theory was 70 years ahead of its time. And he did it when he was 25. I’ve watched about 2-3 videos in relativity and never got it until now. And boy does it feel good to connect the dots on something so mind blowing.

[@donaldjohnson257]

@@kimiamkajorn9393.....you inserted your ego by saying: "it is not hard at all haha"!....@Roast Me was right!...smh2

[@aaronloife2242]

Absolute right

[@NateCooperino]

Imagine being that window washer and living your whole life completely oblivious to the fact that you helped Albert Einstein figure out how the entire universe worked.

[@hdj2jmdn746]

General relativity doesn't explain "the entire universe", it explains gravity

[@NateCooperino]

@@hdj2jmdn746 the universe wouldn't work without gravity biatch

[@NateCooperino]

@@hdj2jmdn746 nevertheless I apologise for the hyperbole. If I had said gravity instead the joke would have been much funnier. No sarcasm

[@BizVlogs]

Window washers are a proud people, and live a dignified, forthright life 😤✊

[@ballin1006]

@@hdj2jmdn746 ya... but without the General Theory of Relativity we would be hundreds of years behind in understanding how the universe worked

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[@bluesniper5399]

And yet there are people who still believe in flat earth

[@lovealways2000]

Really sad I might add.

[@oswaldcobblepot4954]

If the Earth were really flat, Cats would have shoved everything off of the edge by now.

[@neonatom8646]

Oswald Cobblepot I’ve seen that joke millions of times.

[@ScarfaceGhoulerz]

You can’t be religious and say the earth isn’t flat

[@binisman6064]

You must be the Grand Ayatollah. What else can we not be, your holiness?

[@invinciblewarrior1237]

sometimes a 14-minute video does more justice than those 14 years at school!

[@omaraziz5408]

False

[@lowe-nm2yd]

Purple

[@aa2339]

Then that must be one bad school.

[@MrVikingsandra]

Very true

[@freddiereadie30]

Because in school the goal of every student is to get a diploma and get hired and earn a salary.

[@kopibin9532]

Im a clerk. And also discovered a theory of relatively of time. Time slowdowns on monday. And speeds up on payroll day.

[@wayneyadams]

I found that time slows even more on Friday afternoon near the end of the workday, and speeds up during the weekend.

[@vdog4799]

@@wayneyadams no joke

[@m.e.bentoo2271]

Hahaha. Thanks. Enjoyed that. Too bad you weren't a patent clerk. You'd be on your way. Methinks that's what Albert did. "Hey, I'll just get my own patent on this, myself." So he did. "Hmmm. Seems like a weird theory, but look, it's already been patented. I guess it's true. Tell the world."

[@jmaldo68]

Genius...

[@Intellectualwarrior11]

Brilliant

[@lightestseed]

Stuff like this is so interesting to me. I’m a 16 year old who doesn’t like school, and yet my science teacher was passionate enough about physics and astronomy/cosmology that it got me so invested in it to the point where I go out of my way to look up things like this just because it’s so mind-blowing!

[@tervicke487]

Sameee

[@seasalt9289]

I’m also 16 and just completely immersed in learning everything because the knowledge is out there!!

[@productivitycornerofjess2871]

Same here , I m 12

[@benjaminfranklin374]

Same 16 too, Einstein and Tesla are my rome models

[@ChappalMarungi]

@@tervicke487 Let me tell you, don't let bad teachers and peers at school demotivate you! There's better people out there who are researching on fascinating stuff like this!

[@SuperSalim55]

You can’t find a better explanation on the web explaining why time actually runs slower in gravitational fields or at lightspeed.

[@ZubairAHMEDx]

So true..

[@97YoAnDrEwYo97]

Here's another really good one explaining why it works kzbin.info/www/bejne/oJnTfIiXpa5mmbs

[@EgonSorensen]

The Science Asylum has some videos on the subject, also with excellent visual simple explanations - check out the playlist on Gravity as Spacetime Curvature, it is put simply: Great squirrel kzbin.info/aero/PLOVL_fPox2K83_36YgnGisn4rxNvgq1iR

[@unknwn_usr3077]

True

[@christianheichel]

Time doesn't move from light speeds perspective. If you were to move at light speed you would effectively arrive in a time further along the line without aging. Travel at light speed for a thousand years; you would not age or start to age until you stopped.

[@IgorRyltsev]

Finally, 16 years after my graduation someone properly explained it! Great Video

[@pj61114]

KZbin University I wish it existed in 1960.

[@MorganLeodeMenezes]

I wish Einstein was my teacher

[@isnc24bmusic25]

The only problem is that I know how it works but not why it works.

[@captainprice2346]

@@isnc24bmusic25 what? What do you mean why does is work

[@isnc24bmusic25]

@@captainprice2346 What actually is the cause for mass causing space to bend. I mean we still have no idea why it does this. for the how im just saying. I know that mass bends space, and that light takes the shortest path in between point a and point b, so light must be moving faster to account for the extra linear distance to our point of view.

[@srikarmallik7159]

This guy is a genius for making it so easy to understand

[@michaelvaughan8]

No actually Einstein is the genius for making it so easy lol it is literally considered a theory of extraordinary beauty because of its simplicity.

[@vedantsridhar8378]

@@michaelvaughan8 No ordinary person can explain general relativity to a teenager easily

[@CASLOAcademy]

we are all genius!!!

[@ballin1006]

@@vedantsridhar8378 I’m ten and he explained it so beautifully that I didn’t have to think twice about this theory

[@vedantsridhar8378]

@@ballin1006 Well then this means your physics understanding skills is extremely above average(so in a sense you're very smart), but also Arvin Ash is smart to simplify it that good, while Einstein was a genius to have invented it in the first place.

[@r96red23]

Damn! This guy really breaks it down because he understands it properly. Not a single other video online can simplify it like he could. Kudos Arvin, you're amazing!

[@MyVideos-fm7ug]

Well, it still takes him 14 fuckin minutes to explain it. That’s too long

[@sushiiroll844]

​@@MyVideos-fm7ug your reply is killing me😂

[@MyVideos-fm7ug]

@@sushiiroll844 some of us don’t have the patience or even 14 minutes to hear about one of Albert’s delusions. It sounds more like the byproducts of his own insanity more than anything

[@meruutrnenjnjnj]

@@MyVideos-fm7ug imagine calling einstein delusional lmao, if einsteins theories are just delusins than tell us what you know about space an give us a new theory of how space works

[@MyVideos-fm7ug]

@@meruutrnenjnjnj He WAS delusional and belonged in a mental institution

[@rjweiss1]

It’s crazy we used to have to read books to learn stuff like this

[@shambala888]

We need practice also maybe we need to fall from a window and find out more about Gravity

[@valeriataylor8337]

"you know that thing, general relativity?" "yes!" "Ok, I have this formula here.. and this here.... please, solve them and put on my desk tomorrow." you still have. Understanding and learning are quite different.

[@donaldjohnson257]

@RJ Weissenborn.......What are books?.....Can I find them on the net??

[@rjweiss1]

@Jason Shearin there are books on flat earth

[@donniebaker5984]

@@donaldjohnson257 yes and you can also download a free narrator that will read all the books to you forever and never stop or get tired I dood it all the time

[@DEV2beeg]

"Time is not absolute" Gives me chills....

[@varunkhugshal9049]

@Terrance Smith our experience of time is absolute, it changes w.r.t experience of other things.

[@sharvareedeshpande4309]

Yeah its kind of scary and gives off a feeling that MAYBE time is just an illusion

[@xd1712]

seeing as time now isnt absolute and grounded just makes it feel like every force in the universe is just floating around without ground to stand on, like gravity and time can be influenced and changed, and space is also expanding and moving, stretching. just makes me feel like the universe isnt the absolute reality because how can infinity expand into something that doesnt exist, maybe the universe just exists as space within a space that you can travel into by going "outside".

[@heartsproductions9308]

I really think that CS Lewis was on to something in the Magicians Nephew. The way the universe/universes are presented in that book is beyond anything I ever thought.

[@erick7brian]

Time is not real at all

[@jkchandravanshi]

You are a bacterium that breaks down complex concepts into simpler ones.

[@Mo.Jo.]

lol weirdest but most accurate compliment ever

[@philip5798]

@@ajcook7777 did you just write an essay to complain about hand gestures on a scientific video?

[@iamjohnrobot]

What a compliment!

[@ryancw714]

Or an enzyme?

[@EXOPLANETnews]

Hey guys if u love to learn quantum mysteries then visit my science channel u gonna love it

[@sonyadonnegan1983]

The explanation around 10:50 was a perfect summary of how time can be affected by gravity. I never fully got it until hearing that.

[@selfrealized]

Same here.

[@kalpanarms9597]

Hm....wondering how I got these many likes? Then....u are just wasting your time! Go and study physics! 😛

[@ArvinAsh]

Wow! Thank you. I'm glad it was helpful.

[@nabilzig3797]

thinking that you understand it and actully understand it are two different things

[@Ii-fo8pq]

No one is a dumb in this world everyone is genius but if you consider a fish to climb a tree it'll live whole of it's life believing that it's dumb.. Einstein said this.

[@kalpanarms9597]

Nabil Zeghli well atleast I got the idea behind it! The mathematics is the only part left. And what do u expect? Learn all the mathematics too? 😂😂😂( I am just 13 years old, long way to go)

[@pigofapilot1]

@@kalpanarms9597 You are absolutely correct. Once you understand the basic principle of general relativity everything else will begin to click into place and start to make sense out of confusion. Nobody was born understanding relativity but the first step in understanding it is the most important step of all.

[@gupsdhamrait]

Man, Einstein was just built different.

[@chimichangas1329]

Fr

[@randymillhouse791]

He had a nice rump...

[@frankphillips7436]

Sometimes it is simply a mixture of intelligence and a willingness to not accept “settled” science!

[@randymillhouse791]

@@frankphillips7436 A la The Ramones!

[@kalebgonzales4009]

He is big boned.... in science!

[@jjpgaming7995]

0:16 "how dare he challenge the greatest scientist that ever lived" Einstein: "bitch I am one of the greatest scientist that ever lived"

[@ritemolawbks8012]

Got to disagree with you. Einstein was a brilliant physicist with revolutionary ideas of the photoelectric effect, quantum theory, differential geometry, and of course Special and General Relativity ("GR"). His theories made corrections to Newtonian Physics and Galilean Relativity, and thought experiments introduced 4D spacetime, but he had more observational data and technology than what was available at the time of Newton. The GR field equations didn't invent any new physics and still reduces back to Newton's laws for most astrophysics and engineering applications. Newtonian gravity, mechanics, and vector calculus accurately described what was available to him. We still use most of his equations and laws of motion as approximations. Along with Galileo and Kepler, Newton is the father of physics, and most consider him the greatest scientist and mathematician.

[@jjpgaming7995]

RiteMo LawBks damn point proven, and thank you for writing a constructive comment with actual arguments instead of just saying that I'm wrong, I feel like many people don't understand that this is a much better way to change peoples minds. So respect to you for taking time to write this.

[@ritemolawbks8012]

@@jjpgaming7995 I love talking about physics, and I'm fascinated by the life and personality of Albert Einstein. All of the giants of physics are much smarter than I'll ever be, but Newton was a different category of genius and ahead of his time. Even Einstein himself wouldn't want to be compared to the greatest physicist and mathematician in the last millennium. The theory of General Relativity is beautifully described by the Einstein Field Equations, 4D geometry, and geodesics in curved spacetime. It's our best theory of gravity, but there aren't many people who've master it. There are also few people who completely understand Newton's Law of Universal Gravity well enough to explain why is wasn't compatible with Special Relativity. There wasn't much of a competition between Einstein and Newton, but if Newton had lived long enough to see General Relativity, he would have easily been able to understand it and would appreciate that Einstein's thought experiments finally explained the mystery of gravitation action at a distance.

[@capshorts00]

@@ritemolawbks8012 so Galileo Kepler and Newton laid out the pieces, and Einstein put them together

[@Huuuuuuuuuuuu107]

@@capshorts00 The point is all of em gave something to the humanity and science.

[@riiad]

2 things that make those videos great : 1. The animations 2. The quality of the questions he asks. It's like he's in your head. I hate it so much when people pretend to explain a concept and leave obvious questions unanswered. Thank you Arvin Ash.

[@nenmaster5218]

RANDOM recommendation for education: Best social commentary i know: Hbomberguy. Just sayin'. Also, he's funny af.

[@weiwuxian6721]

This is how high school teachers should be!

[@kheivin8211]

School:why you so stupid! Me:that's why l am here

[@yuritardid7761]

I think teachers should use animations and simulations like this guy , its make it much easier to visualize what they're explaining

[@rinkisinha7762]

@@kheivin8211 you made me emotional

[@kheivin8211]

@@rinkisinha7762 ok

[@michaelvaughan8]

@@yuritardid7761 is the U.S. most teachers couldn’t explain and do not grasp the theory of relativity or space time continuum at all so how could they teach it to us?

[@TechnoSan09]

8:09 is perfect 2d version confuses me alot

[@davidhall8874]

Yes. I wondered what was missing.

[@k1ng401]

That’s because the first example shows space-time curved around the stationary mass, and the effect that has on the moving mass. Whereas the second example shows the effect a moving mass has on three dimensional space-time with no central mass shown at all. Not quite equivalent.

[@cyris8400]

Part of the 2D explanations of general relativity or curvature is that you have to imagine that there is no "above" or "below" the stretched sheet. Light travels along the sheet because, in this analogy, the sheet is the only space that exists.

[@hugocopeland6770]

There is no North South East etc. . .

[@oknar1977]

I agree! 2D is confusing, it is obvious there is something above and below but I couldn't imagine how it would look like. Now I see it for the first time, and what they tried to tell with 2D makes sense now 8:14

[@adeshvar93]

I really liked the 3d version at 8:09 awesome!

[@Wazulon]

That's the first demo of space curving that's actually made understand it. I've never understood the old bowling ball on a sheet explanation :)

[@tenormdness]

Yes! I’ve been trying to picture it in my mind for years and figured I was wrong cuz I never see it. Awesome! Now, how can I turn that into a tattoo. Lol

[@Simon_PieMan]

Is it me or do the 2D and 3D animations contradict each other. The 3D seems to pull space to it, the 2D seems to push it away. Trying to get this straight in my head!!

[@divasniranjan2318]

Si PieMan you nailed it. sam question from myside also

[@adeshvar93]

@@Simon_PieMan In the 2d simulation it shows a sheet. Imagine placing a marble on the side, it will roll to the center due to the curvature. Thus "pulling in the marble" .

[@braydengehlhausen5409]

I have been struggling for years to grasp the concept of general relativity. So happy I found this video. You explain it so well. Thank you!

[@utpalrajpoot86]

kzbin.info/www/bejne/hYKQiIlnbad1f9E

[@LalosSaw]

Totally

[@SanjayYadav-qo7fb]

let's get knowledge about Einstein Theory of General Theory of Relativity : www.phyzicsfacts.com/2020/08/que-what-is-difference-between-general.html

[@blaze1148]

I wouldn't bother struggling to understand a concept that is so laughably wrong.

[@freddiereadie30]

If you smoke some weed it will all make sense.

[@IbrahimAli-jb8ml]

I'm about to go re-watch interstellar after this.

[@Yours--Truly]

sameeeeee

[@nishantjain241]

I am still confused. If millers planet was affected by gravity, time should run faster there, right ? For the light to be able to maintain same speed, it would need more time(say 20 hrs on millers vs 10 hrs on earth), but in the movie it's shown opposite. What am I missing?

[@sachinshivamurthy6771]

@@nishantjain241 this video at 10:40 properly u will get know why times slow in high gravitational force.

[@farrel_ra]

@@nishantjain241 u missed to understand it correctly..its the other way around bro. Miller's planet seems to like having a far greater mass than earth. Mass create gravity. Gravity curve space-time. Curved space-time = longer or greater distance. Speed = Distance / Time. To maintain the same speed, with a greater distance, that means time should go smaller/faster (like u said before). That means, for example 1 second at earth = 0.5 seconds at miller's planet. That means, wut happen at miller's planet is faster 2 times than at earth (since 0.5 = half of 1). So that means, everything he did there is actually more time-consuming then wut he actually feels/experience, because time goes faster there. And to made it simple, for this example, if he go back to earth after spending 1 year at miller's planet, then everyone around him would look like a year older than him (since he only experienced 1 year, while at earth, 2 years already passed). Get it?

[@freddiereadie30]

Doctor Strange figured it all out.

[@lexian3635]

Bro i hate school since the lessons they teach is so uninteresting but this is what i like It's so complicated That it's so cool I'm just 13 and im obsessed with physics space gravity

[@smoked8471]

You know, Einstein was not a normal person.

[@manavmnair6975]

He was a Legendary legend

[@alphascorpii3757]

He was a genius:)

[@scienceilan]

He was fully used brain

[@manavmnair6975]

@@scienceilan the usage of 10% of your brain is actually a myth

[@josephpacchetti5997]

No, but he was one hell of a Genius!! 🇺🇸

[@entoythedragon8463]

Arvin, your students are so lucky to have a professor like you. Thank you so much for this. Keep it up.

[@burhanuddinaranpurwala8892]

Agreed... He explains everything so nicely 👌🏽👌🏽💯💯

[@marshalhislop8630]

@@burhanuddinaranpurwala8892 ss

[@EXOPLANETnews]

Hey guys if u love to learn quantum mysteries then visit my science channel u gonna love it

[@entoythedragon8463]

@Enter the Bragn’ It's not physics? Tht must mean you're better than Einstein to say that.

[@entoythedragon8463]

@Enter the Bragn’ Worst theory in history? His theory revolutionized our understanding of our reality. It took him a decade to work on the mathematics of his theory with the help of one of the greatest mathematicians of all time. Do you have a research or theory or formula in physics already that is useful to mankind?

[@abrahamtellez592]

I can't thank you enough for making this. I'm 32, and for almost 20 years I thought never in my life would I ever be able to really understand this, I thought I simply wasn't smart enough to ever truly grasp it, but now, thanks to you, I feel I can begin to visualize it, got a lot more to learn of course, but I'm certain that I'll comprehend it. Thank you, this made me incredibly happy.

[@soberingmind4125]

Happy for you.

[@user-yr4os6jz4r]

He was blowing smoke the whole time. No questions answered.

[@TheHandsomeOne]

wait till you see the math..

[@MaryAnnNytowl]

@@user-yr4os6jz4r yeah... riiiiiight. Which explains the enormous mountains of evidence backing up the theory he's discussing, and zero evidence disproving it... sure, dude. You betcha. 🙄

[@MaryAnnNytowl]

It's a great feeling, isn't it, Abraham? I really enjoy that feeling learning something from a source that finally helps it just _click_ in my mind and make *sense!* I'm happy for you! 🖖🏼🙂👍🏼

[@karthikg731]

Who clicked the like button without understanding anything 😅

[@kevnar]

It's almost like somebody travelling at the speed of light would see 13.8 billion years pass in only seven days.

[@bacsi8337]

6 days. On the 7th, he took a break.

[@VICHANASAR]

Great video in a nutshell

[@texasray5237]

Where else would you find Einstein?

[@christiansutterlin7127]

It’s a watered-down vision for children. Relativity is the Truth and nothing can exist apart from the Truth! Amen! Reality is darker! This video only talks about two or three phenomena consistent with relativity. What about black mass? What about dark energy? What about the total incompatibility between the mathematical and therefore continuous relativistic view and the discontinuous view of quantum mechanics? What about the Sagnac experience? What about Professor Allais's statistics? And so on and so forth, and some of the best! Check out the list in the video: the collapse of physics kzbin.info/www/bejne/h3KYk2CjpM1npZI

[@donaldjohnson257]

@@christiansutterlin7127....A "watered-down vision for children" huh?......The real truth is that some people just can't help being aholes!...Amen!

[@sachitsharma1661]

Was this a reference to Stephen Hawkings book universe in a nutshell cause it's first chapter is on relativity

[@ballin1006]

@@christiansutterlin7127 true because I’m in elementary school and I understand this vid except that there’s only so much you can explain and Arvin’s explanation is the best there is

[@Canyon2-w7k]

Mr. Arvin Ash, you are the first person who have made me understand this whole mystery very clearly. Whatever the lectures I watched, my understanding was completely obscured. I hope you would keep simplifying scientific topics and uploading new videos as time passes by. I wish you a very active brain and good health. Thank you.

[@rgogue]

I was going to comment this too. For so many years I never understood this and tried to understand it myself. And this video just completed me. I'm so happy now. Can't wait for the release of what gravity is.

[@Canyon2-w7k]

@@rgogue when I read this facts in my own language, I did not even understand. However, his lecture is very simple, to the point and easily understandable

[@hosoiarchives4858]

He didn't explain it correctly

[@rgogue]

@@hosoiarchives4858 I assumed he couldn't. Simplifying something so incredibly complex will never be conveyed fully. Or if you're saying he actually did something wrong I would like to know. Either way this did help me understand it more and gave me a easier stepping stone into science.

[@hosoiarchives4858]

@@rgogue the most important part was the end where Einstein and QM are at odds. QM is going to win. We still don't understand the universe and Einstein is likely a placeholder

[@EHenterprises]

Thanks. I'm getting closer to being less confused about special relativity thanks to this video. The more it's simplified the clearer the complexities come into focus. Keep up the good work with these videos.

[@devrimeskibina9521]

Sir, I am a second year engineering student, and this is the first time that I've (At least I think) I understood the General Relativity. Thank you so much!

[@sjm7284]

I am no expert but the shortest distance between two points is a straight line which is not the same as the quickest which can be a curve.

[@arnavkmr3895]

@@sjm7284 I cannot understand what you're trying to say here

[@cagrsendil9879]

@@sjm7284 Well you are right about that if its on a straight plane but earth isnt straight. Im assuming you are talking about 05:50 of course. If we open earths surface on a 2d dimension we will see that curve is actually is a straight line.

[@jackiecartwright9343]

@@cagrsendil9879 oh ya, what a trip!

[@GumbyTheGreen1]

It's good that you said "at least I think" because you certainly don't understand the gravitational time dilation part of the theory based on this vid. At 10:20, the explanation given for it is NOT correct. It says that the greater distance traveled by a light beam in a gravitational field requires a greater amount of time to pass (to keep the speed of light constant) and that this means time has to slow down. But this is a contradiction - for more time to pass, clocks have to run faster, not slower! If anyone knows of a valid way to explain gravitational time dilation, please let us know.

[@mikeriesco6174]

Thank you for 14 of the best minutes of my life...

[@kidzbop38isstraightfire92]

Mike you need to get out more...

[@shethtejas104]

wow wow wow.... That is the simplest and at the same time most complete explanation of relativity I have EVER seen or read. I can now explain what relativity is without using mathematics, the kind of which I am anyway incapable of. Dear Mr. Arvin, you have done a fabulous job. Congratulations. I want to specially give you credit for one thing: almost all the explanations on relativity, however simple they claim to be, straightaway jump to using the conjoined term 'spacetime' without ever caring to explain, as you put it, "how come time jumps in the picture". You cared to explain the two concepts separately. Brilliant. Now I know why we use 'spacetime' while discussing relativity. So Einstein got the idea of equivalence between acceleration in space and gravity on Earth by a simple thought experiment which eventually led to his postulating that matter bends space around it. Was there a similar simple thought experiment that led him to think that light's speed must be constant in all frames of references? In the end, I understand from this video that Einstein's first step towards his revolutionary theories was freedom of thought. Can we say that? I was under the impression so far that he already must have thought about the mathematics of this theory before proposing it. But I guess he had simple ideas, had the courage to work on them and then figured out the mathematics later. Schools and Colleges, even today, tend to box the thinking of students. It is a horrible practise. If a student were to challenge the theories of Einstein, he would surely be ridiculed like how Einstein was initially. Thats horrible.

[@shethtejas104]

@@app_game_system Agreed. But schools are doing a great disservice to humanity by presenting to kids a perfect world where all the mysteries have been worked out and there is nothing left to wonder about. I used to get rebellious thoughts when I was taught Newton's law of gravity back in school. I would ask my teacher, 'if Earth is constantly in motion, and Sun is responsible for it, then there is work being done constantly and that means someone must be spending energy to do all that'. Constant force implies constant spending of energy. I don't remember any of my physics teachers wanting to spend time with me on convincing me or telling me that in fact, gravity was never a force.

[@rovenebuna5101]

Wow

[@ballin1006]

I agree 100% with you

[@abhaypatel9380]

Hindi dubb is very great continue it But thare is some voice in English is background so remove it otherwise it's very helpful love from India❤

[@mafaldabranco5817]

I want you to be my teacher. The way you talk is so intriguing and it makes me wanna learn more and know more about it!!! Love ur content

[@freddiereadie30]

If you want a more entertaining version, just watch Hot Tub Time Machine.

[@CHICOZTACOS]

Agreed. This guy is great!

[@roguechest743]

Oh cmon we all know we wouldn't have listened anyway unless he had the visualization like the ones in the video

[@anaximander66]

Speaking of relative time: that was the fastest 14 minutes I've ever experienced!

[@syeddanishanwer]

Great video. Thank you for this simplified version of a complex theory. What I learned from this video: 1. Gravity is caused by massive objects in space. How these massive objects cause gravity is unknown till date. (Understood) 2. Gravity curves light as it takes the shortest path between two points. (Understood) 3. Gravity also curves time and so the time near the source of gravity passes slower. (Confusing concept; need to research more) 4. Gravity curves space as well that result in objects moving around the massive objects. (Understood) 4. Gravity concept in actual is a 3d model showed in this video. (Confusing concept; need to research more). If you guys can create additional bullets for us noobs to understand gravity, it would be appreciated.

[@HerrJott09]

Nice and everything ok; but ..... there is No Gravity, M8 ^

[@acooper1497]

By far, this is one of the best explanations of general relativity I have encountered. Well done, Arvin!

[@MaxStArlyn]

Ειnςτειn was a fraud, and a bigot . kzbin.info/www/bejne/lX-0hKloZ7l3aMU “…Relativity is a begger dressed in the purple robes of the king, whom ignorant people take for a King.” Nicola Tesla.

[@ashley-sv4lo]

absolutely amazing explanation

[@Skatedgelife]

That tells a lot of your researching abilities.

[@Alex_Gorell]

It was the time part of his theory that I never understood. This video finally dumbed it down enough to where I can understand it.

[@Realist1775]

Me too. Finally!

[@KpxUrz5745]

Really beautifully explained. I especially appreciate the reminder that distortion in the spacetime fabric occurs in three dimensions, not just in the 2 dimensions we are often shown in graphics. Mr Ash is wonderfully skilled in presenting this material.

[@jmo8934]

To think of the genius that Einstein possessed is incredible. How he was able to think all of this through back in the early 20th century with a lot of naysayers trying to discredit him just for good measure and still knock it out of the park and revolutionise physics and humans understanding of the universe is just legendary.

[@marek528]

Could it have been somebody else ? en.wikipedia.org/wiki/Relativity_priority_dispute

[@only_cricket.311]

kzbin.info/www/bejne/gJ3JiGWoiNGde7M For beginners

[@pyarahindustani8553]

​@@marek528 Lorentz, poincare laid ground, Einstein built the towers. He himself said he stood on shoulders of giants.

[@sabari87]

I watched “why is the speed of light what it is” from this channel right after this video and spent a good hour connecting all the dots between concepts I have read a 1000 times before. Basically went from electromagnetism (maxwells equations) -> generation of electromagnetic waves (astounding explanation!) -> propagation through space at a constant speed -> forcing gravity to cause curvature of space -> which in turn affecting time -> thus the idea of space-time. Amazing explanation! Was sure an eureka moment for me.

[@ArvinAsh]

That is an excellent connection to visualize from the two videos!

[@thevastuniverse246]

Wow! It's a nice way to visualize!

[@mr.ramchandermishra2181]

@@ArvinAsh if till now science isn't able to explain gravity then Tell us something that we still fail to explain about gravity ?

[@JesusGonzalez-vy1fx]

@@mr.ramchandermishra2181 everything.

[@mr.ramchandermishra2181]

@@JesusGonzalez-vy1fx give me a eg plz

[@sandwich434]

This is the best video about this topic I have ever watched! I finally understand.

[@gjojxduijv9152]

Bro please explain me please I can't understand

[@yuritardid7761]

@@gjojxduijv9152 which part didn't you understand?

[@yuritardid7761]

@@gjojxduijv9152 basically gravity distorts space and time, gravity curves the fabric of space and makes time move slower, meaning that a clock on Earth would be slightly slowly than the one on the international space station because the gravitational field is stronger on Earth

[@gjojxduijv9152]

@@yuritardid7761 yes bro now I'm clear

[@gjojxduijv9152]

@@yuritardid7761where r u from

[@HopeMadison701]

Oh my gosh, I’ve been watching so many videos trying to understand general and special relativity and this has been the only video that makes sense thank you so much😭😂

[@bikkyychaudhry4510]

8:08 Ahh,, finally. Someone showed it perfectly.

[@aetius215]

I really hated that other 2D animation which is misleading and is always used.

[@dennistucker1153]

@@aetius215 When I saw the 2D trampoline representation, I thought the same thing. I knew why they did that but the less accurate representation does a little dis-service to the theory. I've seen very similar "shortcuts" done by smart people.

[@diegofcm92]

and feels satisfying to watch

[@0623kaboom]

Imperfectly ... he missed the most important bit ... the qualification BY einstein when the theory holds true ... in a steady state environment.

[@adondonadon]

this is what i thought first when i learned this at school, my classmates always believed that its a blanket-like but i would try to explain that its more like everywhere (which is 3 dimensional like the figure which i cannot still explain it at that time but i get the visual).

[@siddhantkavathekar7555]

Me : What is gravity Teacher: throws a pen up, it falls down and thats gravity. Simple 🤦‍♂️😳

[@tiitto167]

It really doesn't explain what gravity is, just the reaction. We all know gravity exists. The bigger the mass, stronger the gravity pool. Gravity is the reason the universe are stars and planets. But why is it there???

[@lleeexx]

@wlb auy Or the better question is, why does matter attract matter in general?

[@robertobuenafe]

*The 3D model for the curvature of space really helped.*

[@sharmavic-1685]

It's great to get the precise and untold theories in school, here for a 17yo student like me.

[@giatberfikir8636]

Newton: gravity Einstein: spacetime me: no ideas 😄

[@jonbones6487]

Unfortunately idk if either of em had it

[@internationalfatherinlaw5585]

What will happen if IN A REIGON OF SPACE THERE IS NO SPAC AND TIME FABRIC? ( a true void) What interesting properties will it have

[@ArvinAsh]

Hard to imagine. Not sure it could exist.

[@christianheichel]

Space is the boundary of vacuums. I feel it would have no temperature/It would measure absolute zero. And it would hold together. If vacuums will hold things together and pull things together why does gravity also do the same thing?

[@davidmusser7927]

In your mind you can make reality anything you want it to be.

[@Armando7654]

Hit the nail on the head.

[@ksy5143]

Einstein's contribution was the most important in science.

[@Kris_Aalst]

11:06 "in order for the speed of light to be constant, time itself must pass slower in a gravitational field" - I understand 11:16 "in other words, time increases proportionally with the curvature of space near the gravitational field" - I don't understand, shouldn't it be "time DEcreases"? I think my brain is being fried 🤔

[@mikep11218]

General relativity is a bunch of made up nonsense.

[@cherrypopbaybe]

nah fr i’m confused too, someone explain

[@kkvleeuwen]

That 3d animation makes all the difference. The 2D model never made sense to me. Now for the first time i can visualize it.

[@nagilum]

8:16 That’s a great way to visualize the effect matter has on space time. I have never seen it presented in this way before. Really cool!

[@Skatedgelife]

Coz it is for kids

[@bent.5062]

same here. the 2d projection never made any sense to me but i now feel like i understand visually how mass distorts space

[@zaldum386]

Exactly , it made all the difference to me also

[@youngtevanced8818]

To be honest for almost 20 I never understood the General relativity theory and time-dilation. But now I can grasp it and it's mind blowing. This teacher deserves an award of the century. I was enlightened! 😱 damn! this is so cool.

[@chrisfoster3772]

@@Skatedgelife I am kids

[@anesuronaldtarumbwa2657]

This guy is good at explaining

[@Astrophysics703]

Our parents think we do time pass and watch useless things in phone.....but it is what we actually watch and these are more helpful and useful than our school studies.... Anyone agree..??

[@upgrade2291]

Yup,all of these useless boring lectures should not exist

[@josephpacchetti5997]

Agree Completely. 🇺🇸 🇮🇹

[@aradhyajain2064]

@Conie Caldera Meraz bro I literally blame tiktok for all of our worlds problems. Agree

[@mikep197]

I'm in my 50's and this video is the first time I really understood time dilation as it relates to gravitational fields. Terrific video! Could have used a physics teacher like you in high school 😆

[@MaxStArlyn]

Ειnstειn is a fraud.

[@akshayreddyatchi1971]

you say youre physics teacher wasnt good. ill tell that to him

[@twstf8905]

_"Space-time tells matter how to move, Matter tells space-time how to curve."_ ---John Wheeler (1911-2008)

[@StevieCooper]

Omg I actually understand space time because of this. Watched this because I didn’t understand something Brian Cox was explaining.

[@math.physics]

As an engineer who has always been passionate about math and physics, I was intrigued by modern physics, despite neither relativity nor quantum mechanics were part of any course syllabus at my university. I studied these subjects on the side and found them really inspiring, I would go as far as to say that they gave me a novel perspective on life itself. That prompted me to create some online courses on Udemy on Quantum Mechanics, Quantum Field Theory, special and General Relativity. It’s not my job of course, but I love talking about these topics while using some mathematics for “intuition”. And I also love watching these videos Arvin, superb!

[@Skatedgelife]

They are all models and theories. Nothing true. I don't think reality has so many faces as you have mentioned.

[@quahntasy]

8:08 *Finally someone showed it perfectly. You cant find better explanation than this guys. This is coming from a grad student in Physics*

[@dixshants1227]

Which university are you studying physics in? I am also doing Physics in University

[@michalmaixner3318]

Did you study GR? He did not show it perfectly. In fact he made the same mistake as everyone else does. The most important aspect of curvature to explain gravity (of our solar system, i.e. in weak fields) is time component, which is heavily neglected in the video. From his explanations, you cannot even make sense of why would anyone feel gravity while he stands still on the ground. Also, in the visualization of Earth revolving around Sun, the circle on which Earth is moving is not geodesic of the underlying visualized mesh at all, so all the talks about shortest paths becomes void.

[@quahntasy]

@@dixshants1227 iit kanpur

[@tushar9655]

@@quahntasybhaiya pls batana ki IIT ki preparation ache se kaise kare

[@pduhovic6184]

Great teachers can explain difficult matter in simple terms. You Mr. Ash are one of them

[@Thekidyusuke]

I wish I was smart.

[@vedantsridhar8378]

Of course you are. My parents, teachers and friends won't believe me when I say "I understand general relativity perfectly". Btw I'm 14 years old and our Arvin Ash is the best teacher.

[@galahadgarza6905]

Thank you, Arvin, for that awesome explanation of Einstein’s Theory of Relativity!

[@marek528]

Do you believe that a patent clerk could have come up with the relative theory ? Could it have been somebody else ? en.wikipedia.org/wiki/Relativity_priority_dispute

[@alein2012]

Beautifully explained. First time someone has explained this theory in a simple and detailed way. 👏

[@dianaashleyquevedo3366]

I am here because my genius 7 y/o student was explaining it to me 😂😂

[@smdclassic]

I swear to all of you, didn’t understand one bit of the whole video until where he explained space time. Then everything clicked into place. I needed to know the end to understand the beginning. Low key a life lesson. Not sure why shii turns out the way it does but i guess I’ll let the future tell me why.😂😂😂 bro Einstein a G.

[@culprit6099]

The reason i cant become einstein: "i ended up thinking how was the ladder hanging in air @2:27"

[@Sushraj152]

😁

[@matoatlantis]

The best part of the video for me was the more accurate depiction of 3D interaction of gravity and matter. In many videos and explanations I was confused by that 2D model and why the plane was bent only the one way. Also it confused me a lot why then, or better to say how then gravity is observed the same everywhere on earth.

[@4draytraces727]

7:48 yes, i loved to see that note. Other videos with that trampoline *analogy* should have such a not. Thus guy finally explains it (very well): kzbin.info/www/bejne/raPamHygd7qMjMU "A new way to visualize General Relativity".

[@Roger-vj3ox]

GRACIAS por ""este excelente documental "" doblado al español SALUDOS desde México 🇲🇽 👋 👋 👋 👋.

[@PabloEscobar-gu8sd]

Damn this is one of the best explanation out there

[@sciencegeek7437]

The most profound and concise video I watched explaining the theory of general relativity. 👏👏

[@vincecox8376]

The answer to your question is "YES" . This is the reason why!! You need to understand we live in a magnetic world, EVERYTHING IN THE UNIVERSE IS RELATIVE TO MAGNETICS!!! The speed of light is directly proportional to the particular magnetic field it travels through!!!! E=MC2 is nothing more then a JOKE!! E=MD, (M'agnetic D'ensity), EVERYTHING you see and feel is in our magnetic realm all tree's all plant life all human life, We are all a magnetic entity!

[@edgar18magallanes]

This is the best explanaition of Einsten's theory I've watched so far! Thanks!

[@MaxStArlyn]

Ειnςτειn was a fraud, and a bigot . kzbin.info/www/bejne/lX-0hKloZ7l3aMU “…Relativity is a bigger dressed in the purple robes of the king, whom ignorant people take for a King.” Nicola Tesla.

[@marek528]

Do you believe that a patent clerk could have come up with the relative theory ? Could it have been somebody else ? en.wikipedia.org/wiki/Relativity_priority_dispute

[@fogfrog7298]

Revelation 21:4 "He will wipe away every tear from their eyes, and death shall be no more, neither shall there be mourning, nor crying, nor pain anymore, for the former things have passed away." And He who was seated on the throne said, "Behold, I am making all things new." (Your daily bible verse!❤ hope you have a great day too!)

[@Michael-ol2gv]

Man falls off a building. Dumbasses: Take pictures and videos Average people: Help the man falling down and call ambulance Genius people: Analyze the man falling down and come up with a theory to help mankind.

[@TheNamesFarquaad]

delete this

[@cynthiacao9379]

@@TheNamesFarquaad why?

[@TheNamesFarquaad]

@@cynthiacao9379 this comment is so cringy. Did u find it funny?

[@angrysenpai8421]

@@TheNamesFarquaad delete this your comment is cringe do you think your funny?

[@TheNamesFarquaad]

@@angrysenpai8421 how was i attempting to be funny

[@directioner578]

For the first time in 21 years I can say that I’m starting to understand relativity/gravity/time and now I’m super interested on it! I want to understand more! Thank youuuuuuu

[@alanmassie1585]

Well the graph is wrong relative motion is not because of a 2 dimension sheet called the fabric of space it's actually infinite layers of density that's why you can't see what direction matter falls when it enters the black hole 🕳️ as it sinks and that's because the star imploded crushing it to a single point in space because of the singularity weight as it sinks it stretches the density slowing down time eventually at the end of our universe will only be black holes until they all form one with all the matter of the universe on a single point in density is enough weight to fall through to a new layer in density causing a big bang effect starting the universe over again but that is not it there is so much more you just won't believe it I even know what happens when we die and where we came from why we are here and everything really

[@nolansorich7278]

@@alanmassie1585 damn bruh u god?

[@ojjuiceman]

​@@alanmassie1585alright I'll bite what happens after we die?

[@nielsvanhoudt6151]

​@@ojjuicemanhe doesn't know, we don't know enoguh about our own brain to answer this question. Most likely nothing will happen tho, our concisousnous will cease to exist.

[@Quidisi]

Okay, you were already THE BEST at explaining difficult concepts - but now you've stepped up to a whole 'nother level!

[@robertjordan8191]

I love how Einstein, one guy, went up against the entire scientific "consensus" and proved everyone wrong. I wish he would have lived long enough to figure out how to tie quantum mechanics in. The random/probability-based nature of quantum mechanics makes it seem like we are missing the real underlying nature of what's going on. It's better than nothing, but really doesn't seem complete.

[@tyroneshoes4049]

surprised they did not fire him, cancel him, smear him, delete him, and demand an apology to the planet Mercury as it's feelings might be hurt. All the stuff the libs who hate independent thought do.

[@alberteinstein4932]

Ohh yeahh!!!

[@mathufnn]

Arvin, since I was 15, I've watched countless, COUNTLESS videos on KZbin about general relativity. I'm 22 now, and still nothing comes close to matching your combination of scientific rigor and simplicity of explanation in this video. I just had an eureka moment. I have heard so many times that gravity bends space and time. But every other person that tried to explain why oversimplified it, and didn't walk me through the understanding, and many pieces were missing. I just love your content man. Please keep making explanations like these, putting us inside the heads of the geniuses and how they came up with their revolutions. You may actually be a revolutionary genius yourself lol.

[@ArvinAsh]

Thanks my friend. Glad you found it helpful.

[@glennabate1708]

Everything is falling towards object with larger mass but because of objects in space are round they never land but rotate moon is falling towards earth the earth is falling towards the sun and the sun is falling towards the black hole in the middle of the galaxy. Everything is falling.

[@musthafa3182]

Never imagned that someone could explain this in just 14 min. Hats off to you, Sir.