Football physics: The "impossible" free kick - Erez Garty
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- čas přidán 14. 06. 2015
- View full lesson: ed.ted.com/lessons/football-ph...
In 1997, Brazilian football player Roberto Carlos set up for a 35 meter free kick with no direct line to the goal. Carlos’s shot sent the ball flying wide of the players, but just before going out of bounds it hooked to the left and soared into the net. How did he do it? Erez Garty describes the physics behind one of the most magnificent goals in the history of football.
Lesson by Erez Garty, animation by TOGETHER.
Carlos should’ve walked out of that game with a Phd in physics
this comment made me die lmao
@@Swapetite bruh!
Hobehto Cahlosh was the best
😂😂
Yes
Roberto Carlos calculated the velocity of the earth minus the pressure of the stadium divided by the number of fans all in mla format the moment he decided to kick the ball
Bearded bread LOL he is a genius
Yeah isn't that OBVIOUS!?
200th like to your comment
201st like to your comment
Or it was just LUCK
English: "Magnus effect"
Brazil: TRIVELA
I'm pretty sure it's called trivela all around
"Treis dedo"
"de rosca"
dedão
Não é trivela quando a bola curva para dentro
Carlos be watching this rn and say , " i did all of this?"
😂
😂
😅😅😅
Me when the English teacher analyses my writing
@@matthewcopping3473 lol
English: physics*
Brazil: *GOOOOOOOOOOOOOLLLL Gol Gol Gol Gool*
her
Gol, without the "a", in Brazil
@@gabrielviana9808 goal é ingles. gol é brasileiro. nao existe goal em portugues
@@gabrielviana9808 shut up kid. Don't mix English with Portuguese
GOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOLLLLLLLAAAAAAAAAAAAAÇO
Everyone is thanking them for saying football but no one appreciates their effort for researching, voicing and animating these videos.
Alexander Tamayo To be fair, it was made by an Israeli, Where people translate the sport into "Football".
hunterofyou It was actually originally "football" then Americans changed it
Justin Fung In Hebrew, The word for football is similarly a portmanteau for "ball" and "foot". Anyway, I'm saying that because an Israeli wrote the script, it would make sense for him to translate Football into Football.
+Justin Fung Actually, 'Soccer' is a slang term for football which originates from Oxford, England.
Samuel Jamal Pope Really? Thanks for letting me know, then.
Plot twist:Carlos was a scientist and calculated everything
Every football regular player can curve a ball. It's really easy (even easier than shooting normally).
But curve the ball that much and with the outside of the foot is something like impossible.
It's just a matter of practice... Back in the day I couldn't curve the ball at all, now I can.
Same goes to the outside of the foot kick.
The difference between a bad and a good player is how they face their limitations.
Good player: "I'll try to do that"
Bad player: "I can't do that"
I seriously think you're just describing yourself.
He didnt shoot with outside of his foot he shot whit the top of the foot
Yeah i could do that whit my right foots inside easily and im 10 yrold
@@erjigg6276 Top of the foot + outside. Mainly outside actually, top of the foot shot would have gone above the "wall" of players(I don't know how you guys name it)
Good luck with explaining the knuckle ball shot haha
Reverse Magnus Effect
VforVendetta You hit so the ball lays still in the air, and the air moves it around.
Ask Juninho Pernambucano for details
VforVendetta its easy xD
you have a point but If it has no spin or very very little spin that the aero dynamics react to the ball.
Roberto kicked with his left-foot bro.
Walid Bahri he is left footed
That's what made the goal seemingly impossible tho. Achieving this kind of precise spin with the outside of the foot is way more difficult. Bending the ball from that position into the goal while curving it around the defenders on the outside is not even half as difficult as with the left
A Lefty Here
Luka Capuder the ball was hit with the outside of the foot
Enzo S. It ia the same right or left
*I love that you called it properly football, and the animation is so good!*
Exactly
_Magnus effect_ should be renamed to the _Carlos effect_
Beckham was better.
nah call it the "Roberto Carlos Effect" due to more people recognizing his name with Roberto in it
Baseball pitchers are like: Am I a joke to you?
I agree carlos effect
@@lordpein8679 nah, don't compare, Carlos is unique😌
I still remeber that goal. Good times.
Moises Munoz you are old tortas
Well, I couldn't watch that goal live but i was at least able to watch Roberto Carlos live many times, he played at my home team Fenerbahçe for a while. :)
Moises Munoz I can score one like that
I also saw it live. What a moment.
Yo también lo vi en vivo y nunca he vuelto a mirar un gol con tanta comba como ese, ademas del spin lo que contribuyó es la super fuerza con la que golpeaba el balón Roberto Carlos.
As a fan of both football and physics, thank you. Carlos’ kick is world renown not only because it’s magnus affect curvature but also given the game it was in. I’d love for y’all to breakdown the knuckleball kick next!
isn't this basically the same as a knuckleball if not could you tell me the difference?
@@ibrahimhassan711 knuckleball is kind of the opposite, it has no or very little spin. This means it doesn’t cut through the air like a spinning ball and the flow of the air can move the ball around a bit I believe. I think there is more to it but that’s roughly what’s going on
@@aidanhill3374 thanks I appreciate the explanation, I always assumed that the knuckle ball was spinning because of how unpredictable it looked like how it dippes sometimes. Ronaldo has a couple bangers.
welcome
@@ibrahimhassan711 The idea of a knuckle ball is as follows.
The ball doesn't move(rotate) but BEGINS moving on route.
How will it begin moving? Nobody can say.
What effect will it have on the trajectory? Nobody can say.
A knuckle ball is something you shoot straight at the keeper only for it to dip or go sideways at the last moment as aircurrent begins to effect the ball. The slower the ball goes the more air will effect it. Or in other words, the further one shoots the ball the larger any distance traveled will result in an effect on the rotation of the ball and therefore it's trajectory. The direction is more likely to change between 20 and 21 yards vs 5 and 6 if shot at the same power.
This video shows the opposite. A ball with a lot of movement that pushes it to the side in the same way a wing pushes a plane up.(long and short tracks of air basically creating lower or higher pressure)
The difficulty here is knowing how much it will bend basically and how far away from the target you can shoot before it lands where you want it to.
In dutch we call it if literally translated a "turning/twisting ball". Literally describing the motion of it turning around it's axis.
I remember watching this game live as a kid and I couldn’t believe it.
I hoped to see actual footage of the goal in the video...
Que bosta, hein? Kkkk
here it is czcams.com/video/3ECoR__tJNQ/video.html
Ya made us CZcams search it
It's worth it.
czcams.com/video/ItZwYNWUONw/video.html
Foot + ball = Football
Hand + egg = Handegg
FUNNY AND ORIGINAL 10/10
Thomas Cavanagh b0ss pls
Lol! so innovative!
Minh Le indeed
Minh Le yes
"Must go in the same direction"
Carlos broke the law
Get rekt Newton
+Christian S Go the same direction unless acted upon by another force. The force that curved it is the rotational force. Newton wasn't wrong.
Just about every football player has broken the Law, me included.
+This is My Name me too
Yeah all footballers break the law, nobody really freaks out about it. I used to specialize in bananas
congrats! after a lot of scrolling, you're the first comment that isn't about them calling it football in the title.
We Brazilians call this effect as TRIVELA, tri come from the number of fingers that touch the ball, and vela from candle that i cant explain, not a problem to brazilians, we've created some words out of nowhere.
If it so easy then why is there no one giving shots like this with this precision to be seen? And also what did you mean when you say THE NUMBER OF FINGERS THAT TOUCH THE BALL(in translation) since it is the exact opposite as seen here no fingers were used and it is the leg that kicked the ball. i mean yes some words can be lost in translation but in this case you can give a more understandable translation regarding the context of this goal.
@@dingnghetakhiangte3870 He meant toes, as in three toes are touching the ball when you perform a 'trivela'. Also, it has nothing to do with 'candles', that's not how etymology works.
So I know a story about the origin of the word Trivela that I can't confirm or deny.
So some oxford shoes have buckles (buckle is called "Fivela" in portuguese) apparently the buckle was specifically called "trivela" by Portuguese people from the city of Porto because it usually covers three toes ("tri" - from "three" and "vela" - from "fivela").
The same toes that the "Trivela" would cover are the same ones used for the kick... Hence the nickname Trivela.
@@dingnghetakhiangte3870 The mistake he made is understandable, because in english "fingers" are the hand ones and "toes" are the foot ones, but in portuguese, we have the word "dedos" which means both of them.
@@nowherenearby9461 man, if you're a native portuguese speaker that's a really easy trap to fall into. i've been fluent in english since childhood and i still make that mistake sometimes. i usually correct myself, but the instinct is there
As someone who has played football for most of my life, i've seen this goal so many times, but I never knew the actual complex physics behind it. Great explanation
boi you got a messi pfp we already know damn well you played football for most of your life
@@bluepenguingaming3794😂
it's first of all not so complex physics especially if you're asian... also @bluepenguingaming3794 stop stereotyping things, I've seen ppl who have never touched grass in their life have Messi's pfp, they either like him in games or watched reels or football matches of Messi, I'm not saying that the commenter hasn't I'm just saying to not generalize...
i've never heard it called a "banana kick" before >.
Well the way the ball curves looks like a banana, doesn't it?
i guess, but ive never heard it refered to as a banana kick.
no true football fan refers it as a 'banana kick', and Carlos did a trivela, kicking it with his left at the bottom right of the ball making it curl left
CURL is the only way ive heard it described as :)
In Germany we use the term "Bananen-Flanke" which comes close to "banana kick".
meanwhile in roberto carlos's head : *kick with the outside of the foot so it curves ok ? *
Roberto intentionally placed the ball with the ball valve in a specific position. The ball valve is an "anomaly" in weight distribution and it's used as a means to influence the ball's movement in the air as it tends to hit the lowest bit (it's heavier on that side). This is also used in volleyball serves
Addison Anderson, your voice is just amazing, it sounds so much clear and I love hearing you, narrating
I bet some dingdong is going to say, "It's not football, it's soccer."
This guy is not American I can see
Common Cool Channel oh, but I am. I just know the "proper" meaning of football.
Blockman Zan you smart *dj khaled voice*
Common Cool Channel "this guy is not american I see" -trump
what else can you expect from white Americans!
it's called soccer you dingdong
I watched this goal live. It was amazing to see the curve trajectory performed by the ball.
Football Physics: The “Impossible” Free Kick (Transcrição)
1 - In 1997, in a game between France and Brazil, a young Brazilian player named Roberto Carlos set up for a 35 meter free kick. With no direct line to the goal, Carlos decided to attempt the seemingly impossible. His kick sent the ball flying wide of the players, but just before going out of bounds, it hooked to the left and soared into the goal.
2 - According to Newton’s first law of motion, an object will move in the same direction and velocity until a force is applied on it. When Carlos kicked the ball, he gave it direction and velocity, but what force made the ball swerve and score one of the most magnificent goals in the history of the sport? The trick was in the spin.
3 - Carlos placed his kick at the lower right corner of the ball, sending it high and to the right, but also rotating around its axis. The ball started its flight in an apparently direct route, with air flowing on both sides and slowing it down.
4 - On one side, the air moved in the opposite direction to the ball’s spin, causing increased pressure, while on the other side, the air moved in the same direction as the spin, creating an area of lower pressure.
5 - That difference made the ball curve towards the lower pressure zone. This phenomenon is called the Magnus effect. This type of kick, often referred to as a banana kick, is attempted regularly, and it is one of the elements that makes the beautiful game beautiful.
6 - But curving the ball with the precision needed to both bend around the wall and back into the goal is difficult. Too high and it soars over the goal. Too low and it hits the ground before curving. Too wide and it never reaches the goal. Not wide enough and the defenders intercept it. Too slow and it hooks too early, or not at all.
7 - Too fast and it hooks too late. The same physics make it possible to score another apparently impossible goal, an unassisted corner kick. The Magnus effect was first documented by Sir Isaac Newton after he noticed it while playing a game of tennis back in 1670. It also applies to golf balls, frisbees and baseballs.
8 - In every case, the same thing happens. The ball’s spin creates a pressure differential in the surrounding air flow that curves it in the direction of the spin. And here’s a question. Could you theoretically kick a ball hard enough to make it boomerang all the way around back to you?
9 - Sadly, no. Even if the ball didn’t disintegrate on impact, or hit any obstacles, as the air slowed it, the angle of its deflection would increase, causing it to spiral into smaller and smaller circles until finally stopping.
10 - And just to get that spiral, you’d have to make the ball spin over 15 times faster than Carlos’s immortal kick. So good luck with that.
😊
you know your goal was that good that there is even a video which tries to explain it
...after so many years
@@brookzerai615 ....on ted talk
@@niceguy1891 ted talk is different; this one is different
@@kaustubh_ramteke_07 🤓
they had tennis in 1670?
+TheGemKingMXL ikr
+TheGemKingMXL I assume you are American, yes? Sorry to break it to you, but things did actually exist before the USA did. I know, weird. (If you're not American then I apologise for offensively assuming you were!)
TheGemKingMXL it was called "Jeu de Paume"
Inky Scrolls I assume you are not American, yes? Sorry to break it to you, but every person from any culture is capable of not knowing a specific fact. I know, weird. (if you are American, then I'm not sure why you would write this and I'd have no reason to be sorry!)
+Nick Clark Touché! ;-D
I don't think anyone could have hit that ball any harder than R. Carlos. What a legend!
Nelinho could
CR7? Zlatan???
@@opiumdealer101no bro
@bruh-dq3ze rocket ronaldo striked the ball harder I've never seen anyone knuckle the ball with that much accuracy and power behind iy
My favourite goal to this day. Absolutely breathtaking.
I love how this videos start with a very exceptional example all the time
Thank you so much!TED-Ed :) The sport was more "magical" to me now than it ever was.
And for those people wasting their time pointing out "football" was used instead of "soccer," how do you live every day? Do you also say: It's not an electric stove, it's a cooker. It is not zero, it is "o" (in phone numbers). What else?
Claudine Malis I believe everyone should just not give a shit, but good luck getting that through CZcams comments
I don’t mind what people call things. As long as we can understand it and enjoy this beautiful game, I am happy.
This kick is aka "3 fingers kick".
Tyler Durden a tres dedos
Ignacio Cárcamo Tal qual Marcelinho Carioca fazia no Timão :D
Or trivela for non spanish speakers
Martin Fernandez Esqueci dessa :)
Martin Fernandez we use "trivela" on brazilian portuguese too.
Best Ted-Ed Video I have seen so far... Amazing stuff.. Keep it up!
How to solve the two EXPERIMENTALLY PROVED puzzles, which are described in the two links below:
czcams.com/video/BAydFMDKj2Y/video.html
czcams.com/video/xX14NK8GrDY/video.html
Thank you TED for calling it Football, the original and logical name for the sport that we love. Than calling it like the uneducated way, "Soccer." Btw that goal is what made football so competitive and impressive sport
iXbeXy MURICA RULES DA WORLD SON. IT MUST BE CALLED SOCCER
Honestly, who gives a shit lol
iXbeXy Soccer is a Scottish or British word..
ıllıllı [ ZomBae ] ıllıllı Mostly Americans use it.
iXbeXy today Americans use the term. it is a logical term for As"soc"iation football. Rugby was the first football with rules before that football was a mob game of the poor played "on foot" unlike the wealthy who used horses for hunting and polo.
iXbeXy But brits came up with it...don't make something, tell others about it, then get fucking pissed when they use it. That's the most ass backwards logic ever.
Video highly researched, greatly animated and written: no one gives two shits.
Calling it football instead of soccer: Heralded solely for that.
I just don't get people....
Thomas Cavanagh I do, calling something a particular name is a sign of recognition and acceptance, therefore respect. Basic evolutionary tribal psychology.
+Thomas Cavanagh Why should he call it soccer?
It"s not a american game.Americans are very bad at this game.
They dont fate artist feet.American feet just stink.
+Thomas Cavanagh
Football -> 1863, England
American football (Handegg) -> 1892, USA
Now STFU.
association football > assoc (later became soccer)
Kakteen Fou I never said it wasn't called that, idiot.
If anyone wants to see the free kick:
czcams.com/video/XdL7EDKr_rk/video.html
You're welcome ;)
Magnificent absolutely magnificent!!! This video helped me a lot!
“The trick is in the SPIN”
Gyro approves this.
Oi, Johnny, Johnny!
Brb imma harness the spin
2:55
I immidiatly went to the comments when I heard it
Was searching for this comment
So, can you curve a bullet just like in the movie "Wanted"?
Rafael Dela Cruz the axis on which the bullet is spinning is horizontal , in order for it so curve like the footbal, it would need to spin on a vertical axis....... Maybe with a musket I guess
It has been tested in mythbusters and its impossible
Probably only if you kick the bullet in the lower left corner
Nope, bullets rotation axis follows the direction of the movement specifically to make it even more straight than if the bullet didn't rotate.
You cant , the projectile in that case is not spherical , and applying a spin to it will just make it unpredictable, but if were to consider old spherical pellets fired from muskets, then it could be possible if you managed to design a round that would also apply spin
i saw that kick in a live broadcast, it was a friendly game, and it was astonishing seeing the ball curves, then before it end outside, it changed the direction, and hit the target, leaving the goalkeeper in such a disbelief.
omg i love this animation.. looks so funny and cute and informative at the same time
Could you explain the knuckleball too?
Beautiful animation and really well explained. Thanks TED Ed! 👏🏽👏🏽
This is the best video of Ted Ed.
Carlos's kick was the best. Amazing video TED.
I heard that Carlos called Sir Issac Newton before kicking the ball
I was watching this live when Carlos scored it. Ah good times...
Animation is just amazing
Wow, thanks for the explanation! I just LOVE free kicks like these! Lovely. That's why football is the beautiful game.
Roberto Carlos representando o Brasil 👏👏👏👏
Football physics: Impossible
Wind: Anything is possible!
RC was always one of my favorites.
I don’t like high-school curriculum/standards, but I love learning new things. Thannnnk yooou TEDed!!
Cricket ball also has this magnus effect needs a high technique to do that. In cricketing terms, we use the term “Reverse Swing”.
But they shine 1 side of the ball tho
Don't think that counts
@@MA-so1uv well new ball swings without shining
Roberto Carlos é foda, melhor cobrança de falta na vida dele foi essa!!
Podia ter guardado ela pra final com a França em 98 ao invés desse amistoso :(
Thanks bro you teach me better than other football players
Probably my first ever TedEd video
Never thought of things such as magic, till I came across with Brazilian Football team. The one Roberto Carlos was in.
Thank you for calling it football🙏🏻. Great video, good research.👍🏽
Here the actual kick
czcams.com/video/XdL7EDKr_rk/video.html
No matter how much animation you use, if you do not show the original recording, people will not understand the magnificence of the goal.
Did anyone notice at 2:49 where he said you can't hit the ball and it comes back to you?? Sadly it can come back. For those who play football know that. But it must be in movement when you hit it,then when it hit the ground while spinning it come back.
Andoni Barreto
Sure!! Only free kick can't come back,but the ball you hit can easily come back in many other ways
it can come back if the wind blow towards you
i know what ur saying .. i tried it with a goal post before xD fck newton
lol the Wind and the ground was not included, he meant while in the air
correct
Respect for TED for calling Football Football and not soccer
Beautiful!
the camera angle and the way it moved with the ball greatly effected the viewers "distorted" ball flight path and curve.
Another TV channel showed a camera angle seen from behind the goals which clearly shows a much less glamorous view.
The balls true path was in the bottom corner however the significant deflection off of the post gave the effect of landing almost behind Barthez
Not to take anything away from the Carlos free kick.. truly one of the greatest shots in football.. with some lucky camera work.
1997!? I thought it was on 1998 world cup
Moeillo it was 1998
It was 1997, friendly tournament called le tournoi.
In 1998 world cup france beat them 3-0
It was a friendly match
Physics: bla bla bla.
Juninho: hold my beer.
The animations are so good 😊 keep on doing a great job 😎
lol
best trivela ever, change my mind
Some use math to find the answer, others use experience and skill.
Brasil: O jogo bonito
Latinoamérica: ¡Que pedazo de gol!
This is the exact video i was looking for
I saw it 6-7 years ago
Tnx yt recommendation👍
That GK got sent to the shops
Ted Ed: Newton’s law of physics
Soccer fans: Trivella!!
Sampath Aravamudan FOOTBALL FOOTBALL FOOTBALL FOOTBALL. FOOTBALL FOOTBALL FOOTBALL. FOOTBALL FOOTBALL
eu vi esse jogo ao vivo foi muito foda
Falou comigo?
Ainda bem, até um outro dia
aeeee povo br
Roberto Carlos deserved a field medal in mathematics for doing all those physics calculations... in his head!
Clicked on the video thinking it was going to talk about Messi, finished the video with a PhD in Physics. Thanks TED-Ed. Really helpful 😉
I have done this before it's not that hard but it isn't super easy
Yay! FOOTBALL!
Very nice video. For me, one of the greatest goals of all time.
Just two things: he kicked it with the left foot (which makes it even more dificult). And, normally, it's called a "trivela" kick.
But like I said. Interesting video. Please keep up the nice work... 👍🏾
It's more difficult if you are right foot, but roberto carlos was mainly lefty.
He also had so much power in his kicks. I don't know how he didn't kill someone with those bombs. Very skilled and strong player
I never knew knuckle balls were so advanced lol
That's not a knuckle ball
It's just a curved shot
A knuckle ball is when the ball flies unpredictably and goes in all sorts of directions
No one calls it “the banana kick” lol
ikr
That’s not true it’s known as the banana kick😂
I do
I've always called it "the banana kick". I'm not even kidding.
I think its a trivela or a swaz.
what a goal and this explanation is really crazyyy..... how roberto carlos make it possible,,, I still thinking....wow.... just amazing😱
What you're missing out on is that the reason why this goal was so sensational was not the curled shot itself. This had been done for decades already. The reason was that the ball didn't fly a regular, steady curl, i. e. from the moment of the kick to the goal, but changed its direction extremely late, and almost in the opposite direction of where it seemed to be curling. Also, curling a ball that was hit as hard as this was something that hadn't been done before. Good video on curves and rotation though!
High winds that day helped. The artist himself has mentioned it
never heard anybody say "banana kick"
Me too
Americans be like, hey you TED-Ed you should call it soccer bc we said so! while entire of the world mostly said football and mpst language take football to apply in their languages -.-
Americans arent like that at all. But good try, trying to make them look bad
Amarís Blackscale I said in a majority way. nah you can see it on every single video or post in the internet. yeah I know there are also somepeople do that kind of thing in the other hand. but really it is your own choice to use which word and there's no reason for any of us to complain when someone use football or soccer. sory for my bad english
Hakeem Hamzah Canada calls it soccer, too.
+Zohaib Rao but Canadians arent arrogant pricks
+Hakeem Hamzah We also say we speak English, but the language we speak is unique to its own due to the influence from all other languages.
It's amazing how this concept is, in practical sense, something so simple that we used to do it in primary school! However the science behind it is so complicated that it gives an explanation as to why we realised we weren't science students.
Ted-ed: Banana Kick 🍌
Any Football fan: *Trivela* 🗿
In my book that is the best goal in the history of the football.
At least it's the best freekick. For the best goal I would go with the 30-yards bicycle-kick of Zlatan Ibrahimovic against England in 2012.
Carlos isn’t his last name, it’s his middle name... his last name is Da Silva.
@Achernar His name can't get more Brazilian
Ópallios Roberto Carlos da Silva Oliveira e aí agora sim?
Gol..gol.... gol.
.awesome explanation!
I watched that game live. I remember that day, my mum yelled at me because it was past bedtime for an 8-year old (it was past 10pm in Germany) and even on weekends I couldn't stay awake that long. So I pretended to go to sleep, waited a few minutes until my parents went to sleep...I then snuck out and watched that entire match. Thats how much I loved the Brazilian National Team.
The weird thing is, if you watched that goal live from the standard camera perspective, you couldn't notice anything very unusual. To me as a kid I initially didn't understand why Fabian Barthez didn't just move...until I saw the replay. That curve man...that curve. Dayum. I was sitting there like 😲
Actually, it's a wrong explanation of the Magnus effect... According to the explanation in the video, ball would go to opposite side, where relative speed between ball and air is higher (and the pressure is lower, according to Bernulli law). But if you consider the layers of air, rotating with ball because of friction between the ball and air, you'll get the correct picture of pressure distribution, causing a curve trajectory
Scientists: “It’s impossible to curve going 100 inches right then 100 inches left”
Roberto Carlos: “Hold my beer”
Kaka: “Hold my beer”
Gorgino: “Hold my beer”
Here is the video in question (free kick) in case you want to see it: czcams.com/video/3ECoR__tJNQ/video.html
That freekick is literally worth research for Physicists in Mechanica. That's how splendid it was.