How does a Knuckleball Work? The Science of the Knuckleball
How does a knuckleball work, and what is a knuckleball? In this video I'll be explaining the science behind the knuckleball, a shot utilised by baseball players and footballing greats such as Ronaldo and Bale, and how this shot can possiblly work in the first place.
Sources:
mentalfloss.com/article/31005/...
thatsmaths.com/2015/11/26/lif...
iopscience.iop.org/article/10...
I Don't See the Branches, I See the Leaves by Chris Zabriskie is licensed under a Creative Commons Attribution license (creativecommons.org/licenses/...)
Source: chriszabriskie.com/dtv/
Artist: chriszabriskie.com/
The knuckleball is a shot that has confused goalkeepers and batters alike for decades, and the underlying science of the knuckleball is really quite amazing. But how does a knuckleball work, and what is a knuckleball in soccer, or football?
One of the earlier theories that tried to explain how a knuckleball works was based on the fact that the balls used in baseball are covered in seams, and so the knuckleball effect would arise due to the turbulence that these seams created. This fails to explain how a knuckleball works in table tennis and football, as these sports use much smoother balls.
How does a knuckleball work without seams on the ball? The answer to this is down to the boundary layer theory, and the fact that a knuckleball effect is observed at a velocity known as the drag crisis. The drag crisis occurs when the air flow past the ball goes from laminar to turbulent, and it's this that gives the desired knuckleball effect. The boundary layer detaches from the ball intermittently on one side, causing a side to have turbulent flow behind it, and can then reattach and detach on the other side. This random process gives rise to a ball that can swerve randomly through the air, which is a knuckleball.
The science behind the knuckleball can be very complicated, but I hope that in this video, I can simplify this phenomenon and deliver an explanation as to how a knuckleball works in more simplified terms.
Пікірлер: 90
Amazing that you can go a whole video talking about knuckleballs and never show a clip of one.
@janinesalina5891
2 жыл бұрын
he doesn’t need too. if u came here u most likely already know what it is and looks like he jus needed to explain the science
@Da-op8wv
Жыл бұрын
@@janinesalina5891 "aight so today we are going to talk about the science behind a horse jump, so here are a bunch of clips of volcanoes... yall already know horses and jumps"
@grumblemcgee190
9 ай бұрын
@@janinesalina5891there is a recommended tab you mong
@GlennHanna8
8 ай бұрын
He tried and tried though. I was hoping maybe he'd save his one knuckleball kick for the very end. The dot animation was a decent substitute.
How is he not more famous
@mirokahkonen
4 жыл бұрын
I was wondering that too
Oh my god that’s what I’ve been looking for this whole time. Now I can finally perfect my craft as I found that a knuckle ball is usually 20-25m/s. I’ve been hitting it way too hard this whole time... I can hit a pretty decent knuckle ball but... I guess it’s always been too fast but now.. NOW... I will be the king of knuckleballs
@mohammaddalloul9891
Жыл бұрын
Lol
@raouldukeGonzo
Жыл бұрын
You’re kind of some kind of balls that’s for sure.
@pablolloyd1450
Жыл бұрын
same dude
I came in expected to learn how the knuckball works so I can learn to do but came out with a degree with fluid dynamics
So in spin kick, the kicker knows where the ball is supposed to go. When the goalee doesnt know. In knuckleball neither of them knows.
@peshemak7
2 жыл бұрын
True.
That's great bro!
Great video!!! Why have I never seen this video! Absolutly great science! I have got the knuckleballs a few times when playing football, but it is certainly a hard shooting technice! I get suprised each time I make one! hahaha
That was an amazing explanation! Thank you!
thank you! im doing a school project on knuckle balls and this helped me a lot!
I've been looking for this for so loooong.... Thank you
@ollienash4124
3 жыл бұрын
Thanks, I'm glad it helped!
Excellent job! But one remark. I believe that the turbulent flow is applying higher pressure, since laminar flow has higher speed ---> higher dynamic pressure ---> lower static pressure from the Bernoulli formula. I tried to check the internet for a specific content about that but I was unable to find any. I am opened to discussions. Either way the ball would have moved just the way you described meaning that we would have no idea of it's trajectory since we don't know all the variables in the turbulent flow. An impossible shot to predict indeed! :)
great video ! Liked How you Presnted it
Yeah abusing this type of shot and mastering the technique can give you a huge advantage over your opponent. I think that you can kind of control which way the knuckleball breaks based on your follow through after you kick the ball. I noticed in a couple of those clips, those players would quickly shift their kicking foot to the side and that would cause some sort of break, which is fucking insane. I believe that the knuckleball is the rocket king of all shots since it is usually the fastest type of shot you can kick in soccer.
Amazing insight
Thank you very much for that video!!
Great video man
Good ol radio voice; keep at it!
Super. I am an engineer with good knowlege in Fluid dynamics. I know how to teach my boys now. There are 2 main factors for this phenomen
Just loved it man
Real Nice vid bro
This is great!
Thanks for the video. I am currently writing a science article on this topic!
@ollienash4124
4 жыл бұрын
Sounds great, I hope this helped! Here's the link to the paper I used for this video (the link in the descripton doesn't seem to work), but there are many out there on google scholar. iopscience.iop.org/article/10.1088/1367-2630/18/7/073027/meta
One of the best videos on KZread. #facts
The reason why he couldn’t do it was that he did not stay on his toes
@heatplayz8242
4 жыл бұрын
Follow through also and body posture
@n0nenone
3 жыл бұрын
@@heatplayz8242 then basically everything lol .. fair enough lol..
@heatplayz8242
3 жыл бұрын
@@n0nenone lol yes. After many years of practice i can shoot knuckleball
@heatplayz8242
3 жыл бұрын
@@n0nenone very fuckìn thing is important
Nice quality
5:36 I was genuinely him expecting a Skillshare plug.
this is a great video
I officially love you and you need more damm attention !
so satisfying when you hit it right in football
Apparently, I'm a moron. I've watched this twice, and I still don't completely understand it.
@thenujansandramohan4525
4 жыл бұрын
Jeffrey Tackett i have watched more than 5 times and i also haven’t understood it
@phinoy666
3 жыл бұрын
windturbulence change randomly from side to side.. thats why it sways... i think
@n0nenone
3 жыл бұрын
Um.. .. if you wanna apply just hit with a predetermined speed & with no spin.. at those speeds, flow of air will change randomly hence giving you the result.. BUT.. some of the times I've seen players seem like controlling the direction itself which makes me wonder if each of those goals are fluke lol
I always thought it is beacuse the ball gets deformed when hitting it with your foot.
I am the 500th subscriber
I know how to do a kunkleball but I don't now the science
I love your voice
And here am I who matsered knuceball ball in 10 days
Why only 31 subscribers
"Being a physicist has its own drawbacks"
👍👍👍
That's what Cristiano Ronaldo does well
timmy wakefield baby, wicked pissah guy
So could one build a knuckel flying plane?
@ollienash4124
3 жыл бұрын
Not sure about that, but there have been planes constructed using the Magnus effect instead of conventional wings to provide lift, called Flettner planes.
that didn't even explain what the title said it would
I believe in baseball a knuckle ball is actually thrown by holding the ball with your finger tips, not your knuckles. It's called a "knuckle" ball because the flight of the ball knuckles in the air on the way to the plate.
@stephentucker6608
Жыл бұрын
The modern knuckle ball is thrown from finger tips. The original knuckle ball was thrown from the knuckles.
stay more in a straight line to the ball
a plymouth duster eh, now thats dusty . i see what you did there ;j
I can't believe this guy is not having more subscribers. Is he stealing content?
Who is still confused
frozen 2 trailer
jocelyn flores
응
Science😂😂😂
Don't think wat you are doing is actually the knuckle ball More like a curler
@andreluismauad44
3 жыл бұрын
Exactly he was hitting it with spin. You got to hit it with your laces right through the middle then that shit is just swerving in the air
Please... knuckleball is standard shot in most amateur golfer lol
A knuckleball in soccer? Really?
@EstebanMenchacaGamboa
4 жыл бұрын
It is a big deal
@EstebanMenchacaGamboa
4 жыл бұрын
check the knuckle ball twins on KZread
@TheDarkRodent
4 жыл бұрын
@@EstebanMenchacaGamboa I'ts not a knuckleball unless there are knuckles involved. knucklehead
@leonreynolds9321
3 жыл бұрын
@@TheDarkRodent are u acc stupid? Or joking
@megabolls
3 жыл бұрын
@@leonreynolds9321 dude what else do you expect from a guy who calls football 'soccer'
He said it might take months or years to do the knuckleball.... I did in just 30 mins
This is not a knuckle ball this is curve ball
@jeffreytackett3922
4 жыл бұрын
Odd, given that #1, he titled it "knuckleball", #2, he references knuckleballs multiple times, and #3, he explains how force can alter a non-spinning ball from side to side, causing a ball to move randomly from one side to the other, unlike a curveball, which breaks in only one direction at a time, and spins from the point of release. Good call though. Bleh.
@moneymakinmitch8130
4 жыл бұрын
Jeffrey Tackett he’s talking about the guys shot, he’s curving it not knuckling it
@themexicansensation2698
4 жыл бұрын
MoneyMakinMitch yup those shot were curls not knuckle balls. To hit a nuckle ball you also have to hit it with the side of your foot
@souvanikmajhi2945
3 жыл бұрын
Idiot 🤣🤣🤣
@megabolls
3 жыл бұрын
@@themexicansensation2698 not necessarily , check the cr7 version
knuckleball is not used in tennis. wtf are you even talking about
Man. Whosoever attends his classes will sleep 💤💤😴😴