COLD HARD SCIENCE.The Physics of Skating on Ice (With SlowMo) - Smarter Every Day 110
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- čas přidán 20. 02. 2014
- Tweet this: bit.ly/IcePhysics -- FB it: bit.ly/IcePhys
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Figure skate, Hockey skate, and blade diagram Graphics by Kelly Richard.
www.helloimkelly.com/
Clap skate, Plantar Flexion, and outro logo by Emily Weddle.
emilyweddle.com/
I shot the skaters with a Phantom MIRO LC320S made by Vision Research:
www.visionresearch.com/Product...
Most speeds were around 1750 fps, but I shot the Hocket skid at closer to 3500 fps.
Music made by Gordon McGladdery, "A Shell In the Pit".
Gordon's work is awesome, you should check it out.
ashellinthepit.bandcamp.com/
Glenn Replogle, the Figure Skating and Hockey Player coach was great to work with. Also, a big thanks to Glenn for helping me borrow two skates from the Huntsville IcePlex. www.iceskate.org/
Nick Laurila was very helpful and accommodating. We also became friends pretty fast. It would bring me great joy if people reading this video randomly years into the future would randomly tweet hot dog photos with the words "Here's a Hot Dog on @SmarterEveryDay" to him / nick_l12 . He has reminders setup in his phone when local fast food chains have "Dollar Hot Dog day". It's quite funny, but deep down I'm jealous of how clever it is.
Robert Farrell answered my Facebook appeal for Photographers/Videographers in the Milwaukee Wisconsin area and filmed the skaters at the Pettit National ice Center for me.
He's a photographer www.robertfarrellphotography.com/
-------------------------------
With thanks to:
JR Ginex-Orinion - he helped me by putting the equation in LaTex and giving me a file. This saved me a lot of time and I'm grateful.
Kevin Butler at the Pettit National Ice Center in Wisconsin was helpful in coordinating the filming of the speed skaters.
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If you want to learn this in detail stop what you're doing and read the three pages around "Equation 5" in this book. I was particularly interested in the "warm ice" vs "cold ice" issues.
bit.ly/1jRa32X
This is also a great article about why ice is slippery:
lptms.u-psud.fr/membres/trizac...
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Warm Regards,
Destin
When Destin mentioned the physics going on in the players’ brains, he wasn’t saying that they were consciously doing math equations in their head, rather that their brain can subconsciously calculate the exact angle, velocity, speed, etc of all the maneuvers fast enough to keep up with the game.
I think his point was that, while they may not consciously understand the math, their brain can calculate everything just fine, showing how powerful the human brain is.
Yeah there's this part of the brain that controls balance and it's crazy cuz all of ur body has to move for ur arms to move out straight and you not to fall down or anything like that even walking would be impossible if we had to control everypart of out body
Yeah, but that's happening no matter what you are doing, like walking.
@@julidiamondlover Exactly!! I do it every time I brush my teeth, so that I don't knock them all out with my toothbrush! HAHAHA...hard enough to clean them, and gentle enough to keep them in my mouth! HAHAHA
similar to how we toss something into a box.
Captain Imperialism .....we are wonderfully created.....
Every Canadian watching this is thinking "whoa, you are really overthinking this".
fax
So tru
Fax
I’m not a Canadian but I ski and even I’m thinking that haha.
and Russians
“Hockey players we geniuses”
*gets shot at while trying to conduct an interview*
True
He didn't say they were nice.
😂😂
I didn't think that was good. Unprofessional.
@@Kneichion it was unprofessional to do an interview for an internet video during practice, fair enough trade yeah?
We aren’t smart it’s all Muscle memory
💯 honesty..
Agile..
So true
I mean....your not wrong....
Yea
Cap, inventors don’t memorize inventions they create them
Shows what an insanely complex piece of work our brains are. The fact that a person can do these things without even knowing it just blows my mind.
nice words
No please don't let it blow it its a wonderfully complex piece of creation!
Raid kaboom, your brain matter is all over the place.
it's mostly muscle memory, so its basically the spinal cord that's the smart one
As a hockey player myself, I have to say that we do not conciously think about the balance when stopping. We do, however, semi-conciously calculate the stopping point and angle of the skates so that we get the perfect stop.
O.O
+Gessica Tran (Ulfonius) It's actually easier than you'd think.
I'm well on my way to joining a hockey team, my boss (owner of ice arena) says i can already do everything i need to play, i just need to learn the rules and get the kit
how much does a full kit cost? from a cheapass cardboard box shoulderpads to badass battle armor, what prices am i looking at here (please give what currency you're using, conversions suck if you don't know what currency we're using)
oh, and I've already got skates
+Tremaine Kidman it cost alot if you want anything decent
Like 2k $ cad
+Tremaine Kidman but for starting out you can just go to a hockey shop and give them your budget
I love how much credit he gives to the people he talks to. Scientists, Farmers, Sportspeople who have all worked incredibly hard to do well really deserve that kind of credit!
“Hockey players we geniuses”
gets shot at while trying to conduct an interview
The vast majority of people who are doing well worked bloody hard for it.
3:43 the machine looks so cute lawl it has tounge nose n eyes
Ha! The sharpening wheel pink tongue.
Nice observation!
It’s... its blepping! Omg I just realized this XD soo cute!
he go blep :p
I'll never unsee it anymore lolll
didnt notice that
5:28 as a hockey player, im not implying we are dumb but we dont think of all the math it takes and all that, we just lean back a few inches behind and we are good
+flij yes but you also internalize all the angles and speed you need. Think back to when you first started skated, you could barely push off, let alone stop - definitely not stop of a specific point. Hockey players like to simplify stopping to leaning into it and that's it. But there's really multiple stages where the blade acts differently in each. You need to remember how to adjust on each of these stages to stop precisely where you want.
I get what your saying but it's more like its instinct you don't have to think about it
J
It's in your muscle memory. Implying that you calculate the speed and distance in your brain is complete bullshit that only happens in cheesy science fiction movies. I play a wood wind instrument and it's not like every time I hit a note I'm calculating precisely in my brain what air pressure I blow into the instrument and what frequency the note is I'm playing.
figure skaters stop like that a lot too. It's probably the fastest and most efficeant way to stop. Also, the guy wasn't that fast. I could take a stroke, glide and do the same thing.
You bring up an interesting point regarding the “background” processing of a hockey player’s brain.
Wayne Gretzky was not the biggest, strongest, or fastest player in hockey. Far from it. But he had an uncanny ability to predict where a play was going. He was almost prescient in that regard. It’s also why he was such a prolific playmaker, even long into the twilight of his career. He could make passes through loads of traffic because of whatever background geometry/physics processing going on in his brain.
Hockey is pretty unique among the major sports because of Gretzky. Typically the best players possess some ungodly physicality. Look no further than someone like Lebron James. But Gretzky was a reedy, average sized kid who absolutely dominated the game because he quite literally out-thought his opponents.
Gretzky had ungodly talent, yes. And he had Dave Semenko (RIP) to make sure that anyone who even thought about making contact with him would be spitting teeth.
@@CBotts81 Don't forget Marty "curved stick" McSorley as TGO's "bouncer" in SoCal.
"If the human brain were so simple that we could understand it, we would be so simple we couldn't"
What's/Who's that quote from?
That makes no sense
At least to me
@@nikkiofthevalley due to the others guys reply I was reminded this comment exists, but it's contested, it's either Lyall Watson, George Edgin Pugh, Emerson M. Pugh, or Ken Hill. One of the four
ALAH_AK_BOI 69 it makes sense.
We don’t know how the brain works fully.
If we did it would have to much less complex.
But if it was that much less complex….we wouldn’t be smart enough to figure it out.
See you all in another 5 years when CZcams recommends this again
WHEEZE
Hello from 10 months later.
hello! from a year later i dont know if you still use this account but hello!
As a Canadian, it always makes me smile when people talk about "ice skating". At least to those of us who grew up here, there are skates and roller skates.
Here's a Dutch guy agreeing with you. :)
Vincent Carmiggelt as a Canadian with full Dutch roots, I have a strong love and appreciation for both hockey and speed skating :)
Because the term “skating” is used for skateboarding.
im pretty sure for a lot of athletes do it from muscle memory...reasons for practice
Exactly what i was saying... like when im playin ball, i make it in the hoop because i can feel my muscles telling me how much force and height i need to make it in. I aint doin no trigonometry or geometry to get that shit done.
muscle memory is not in the muscles your brain controls it all the genius part is that you have practiced so much that your brain can perform the geometry and trig without conscious thought and you can drive the ball to the hoop. where as if i tried to take the ball to the hoop I would mostly like trip, fall and hurt myself (seriously im not good at basketball at all)
caleb archambault your brain is only remembering sensory input from your nerves in your arms when you shoot. and replicating that not the other way around
Every comment here:
“As a hockey player myself”
Then a paragraph
Fancy Bucket ok
Avocado ok
not this one
You are right actully I was watching g the video and he starting saying all the calculations to stop on skates. And I was going to comment as a hockey player it’s not that complicated but then you were the first comment I saw so I just kept watching the video
As a hockey player myself, I found this comment effing hilarious.
I love how when he's with experts he's able to say "I don't understand" and let them explain further
No one is an expert in everything and it's fine to not get concepts right off the bat
Even someone as smart as Destin learns new things everyday :))
“The only true wisdom is in knowing you know nothing.”
― Socrates
As a figure skater, skating comes so naturally to me now that I honestly don't even think about all physics and angles put into skating. It always seems weird when people that don't skate talk about skating. I don't know why but it just puts me in check realizing that not everyone knows about skating
I play hockey, and it’s so true. I am a great defenseman but it’s so weird. I just kinda know where they are going. And I literally just use muscle memory to skate as I think “okay you here he’s gonna go here”
This is true of everyone about the various skills in each individual's skillset - sports, music, art, etc.
Jocks and nerds are both physics geniuses. Nerds understand the concepts, math, and formulas involved using their cognition skills but are often not able to translate it into personal physical ability very well. Jocks understand physics intuitively and instantaneously with their bodies, muscles, and nervous systems, but not necessarily cognitively. Both are impressive.
That is 100% spot on and exactly what I was thinking though worded it much better than I would have.
It's just a shame the two sides usually don't see the other's 'ability' as valuable...
frollard Not untill the nerd becomes the athlete, or the jock starts paying attention in physics class.
glad to be the right amount of both :3
Actually none of them are necesseraly geniuses. Knowing or executing known data doesn't make you a genius. Hmm.. implement imagination, improvisation, innovation - now that's a genius!
SpiidAcis Genius - an exceptional natural capacity of intellect, especially as show in creative and original work in science, art, music, ect.. a person having such capacity.
We're all geniuses in our own elements. What are you a genius of?
There’s something strange about watching someone doing such graceful skating while they’re wearing jeans 😂
5:55 i beg to differ. i have a D in physics.
Me too😑
LMAO
We aren’t the best at school, but we wheel some single moms so it’s fine
@@tilmanstockert6442 so true. I can't live without barbara now
@@benxvariety8878 BARBARA IM DEADDD😂😂😂😂
I don't know why but this video is insanely interesting to me. I've watched it like 4 times in the past few days
Same
Another great video. I had no clue about the curvature of the blades. Thank you for enlightening us.
Bandy don't have a curvature on the blade like speed skating
@@viktorbergendahl2696 idk if you're saying that speed skates don't have curvature, but they do. It's just very subtle, so that you don't notice it unless you look closely.
@@sjuns5159 ok i didnt know that but i think that bandy skates dont have a curvature at all
When you’re job is just being an extreme over thinker, love it
Your*
I was watching this during the New Years countdown
I always like when destin is asking questions and destin manages to make them smile and you can just tell they really needed that laugh that’s so awesome
I play hockey and i hate when figure skaters are on the ice before us because they carve up the ice
I figure skate and I hate it when hockey players are on the ice before because even after the zamboni there are still dips in the ice
Lets just agree to disagree
It was painful to watch the figure skater jumps. I'm a goalie and I feel like they're always trying to mess up the crease. Always huge divets in the ice after figure skaters.
I play hockey and i hate figure skaters for all the same reasons and because they think because they can ice skate they can play hockey.
Tommy Page I don't know any figure skaters who think just because they can ice skate that they can play hockey...that's a very general assumption haha
I was watching this during the New Years countdown
Rip 2019
Rip earth
So you have been studying for a year
@@corruptlem0n868 nice
One time I breathed
Thanks, Destin. I've been watching ice skating for more than 60 years and I've been on skates but I think I've learned MORE from your videos in just a few minutes. Thank you.
3:17
"....... I'm sorry"
"That's the SECOND TIME"
The editing on this video is just brilliant. He does picture-in-picture to provide commentary during a slo-mo shot and dynamically adjusts the size and position of the commentary frame to stay near the action without getting in the way. This allows engagement with the audience while presenting the visual information of the high-speed footage in a way that is so organic that it means that only film geeks are likely to notice it.
I love that sharpness diagram! I use it all of the time and I never knew you guys made it! Also, goalies tend to sharpen their skates to have more bite because we have to be technical in our movements in order to position ourselves to stop the puck. The skaters tend to have less bite because, well, they skate more. It helps them skate faster and they don't need to grip the ice as much as goalies do.
Really? I used to play goalie and we always had our skates duller to slide sideways easier.
@@flare2000x To be honest, not really sure why I said that. I must’ve had them flipped around. I’ve always liked mine sharper so I could get a better grip on my butterfly slide while my goalie coach‘s blades where flat and rusted.
Please bring this back to the top of your channel along with many more of your older videos. Consider where you started and so many still are in that space. I watched your wonderful old 2014 video in 2021 and got so much out of it.
I don't understand any of this, but I'm interested
😂😂😂😭😭😭
You sir, most definitely earned my subscription :)
Thanks Scott. I'll do my best to keep it.
:D Holy crap your like the first channel to actually respond to my comments! Dude....You Are AWESOME
+SmarterEveryDay Hi there! Small correction to an otherwise super video. The melting of ice under the skate isn't due to friction, but regelation, the decrease of the melting point temperature in greater pressure (because of the special thermodynamical properties of water). It's why glaciers move, and why a rope can go through slowly a block of ice, without cutting it in half.
Hhj
Anton Pegram
Yea we aren’t geniuses and we don’t think about the physics while playing obviously but am I the only hockey player who finds this really fascinating
Hey destin! I just want to let you know that the reason behind ices slippery property is not due to friction melting, I would recommend watching Its Okay to Be Smart’s video on the subject matter,
also an episode of Q I that explains it well
So today I had my very first Hockey training. I couldn't manage to do the Hockey stop, I didn't get how it worked at all. Now sir, my mind is in peace but my feet just can't handle too much greatness yet.
A big fat thank you.
Very educational video, i feel smarter everyday watching these, thanks
This was awesome. I used to rollerblade years ago and I've ice skated on occasion, I snowboard a lot, and combining those two meant I thought I had a basic understanding of how ice skates worked.
But everything I thought I knew, was wrong!
Wonderful! I love moments like that!
Thank you for this, I’m taking the nerd approach to learning hockey and I am so fascinated by how skating even works, but the more I understand the physics and ergonomics the easier it is to get it in practice.
Jeez, no wonder the importance of the Zamboni. I had no idea so much damage was incurred on an ice surface.
fla playa THE AMAZING ZAMBONI
Even with the zambonie they cant get all the deep divots out.
@@finley3459 The hockey net dents 😖🤧😭
"HELLO !, and welcome to tony bamboni's used zambonies!"
Sports physics is so fascinating! Please do this for more sports!! Volleyball would be awesome to breakdown.
As a man who cares not for baseball, I would *love* to see a fastball getting hit by a bat through these super slow-motion cameras.
I knew most of this but still very interesting and great to see the slow motion footage. Real pro presenter and great explanations.
As a hockey player you don’t really think about friction and angles you just kinda stop. Like my man is overthinking skating
Or you are under thinking
@@mmonsterr that's his whole point to begin with 🙄
Proves that you are a hockey player because the video is litteraly about going in depth about ice skates.
This is not overthinking, it's called factual and science.
If they are geniuses, imagine how smart I am - I can stand straight and not fall over. It took me like 2 years of practice but I finally had figured that out.
Good for you.
***** en.wikipedia.org/wiki/Child_development_stages#Two-year-old poczytaj sobie.
Insects are geniuses too, cause I'm sure they recalculate all the formulas before taking off. They are also aware of their weight, wind velocity, air humidity and pressure.
There is a difference between a Pseudo-Smartass and actually being smart. You should know well enough that insects and human beings are WAY different when it comes to consciousness.
tjNephilim he's mocking the idea that hockey players are doing physics calculations in their head in order to stop on ice.
tjNephilim /watch?v=xECUrlnXCqk
Adam Wojtczak Insects do complicated physics calculations as well however they use very specialized processors to do so and due to this fact they get more done with smaller processor.
Hockey players DO complicated physics calculations but they do them using part of the brain we call subconciousness and precalculated values (Center of mass, weight of their limbs, stregth differentia of different muscles that have been figured out over years and stored at readily available memory registers for subconciousness) and thus manage to do it efficiently on the fly.
IF SO, THEN MATTER IS ALSO GENIUS, IT ALSO FOLLOWS QUANTUM PHYSICS
its not hard to stop in hockey. love your vids, cool how you make it so complex. I've been playing hockey for 7 years and I didnt even know how in depth this is. i really dont even think about stopping, you kind of just do it
im relatively new to figure skating (1.5 years - ish) and i still trip over my toe pick but this helped me to understand more! and also learning about hockey skates is so interesting :)
I recall reading a study that suggested ice skates don't melt the ice when gliding across it, and that this was a popular but wrong myth.
This makes me want to watch hockey.
He talks about this at 8:07 the layer of water is a few nano meters thick.
Skates generate a large pressure on the edge. Ice is less dense than water (why it floats). When you increase the pressure enough, you force H2O to go into its most dense state, which is water. That is why there is a layer of water you glide on while ice skating. You may have also had a science class that "boiled" water at room temperature by putting it in a vacuum - same concept.
You should make a slow-mo video of someone playing guitar! I bet it would be awesome.
This video is helping me with my figure skating jumps- thanks Glenn!
This is at least my second time watching this video, and I just noticed the awesome editing trick you did with the skate switch but your kid doesn't change. well, either cool editing trick, or AWESOME parenting!
Thank you Destin. You did an amazing job explaining how these sports work. I missed smartereveryday..
Dustin!!!!
Talking about the precision of a hockey player, i thought about the precision of a skater or pro-skater.
A skater doing flip tricks has some amazing physics going on, and the level of skill and precision is awesome. I would love to see a video about that! Thanks
Wat u said
Its Destin
Love seeing the dynamics of figure skating
My favorite thing to do in life was ice skate. It felt like it was the best sport with the less friction/contact between me and the ground or water. But your video is answering all the why's. I have lived in Florida for 51 years after spending the first twenty years of my life mostly in the frozen north, Canada - ice skating on the Rideau Canal in Ottawa to work at one end and attending classes at the university at the other end. I was SO thrilled when somebody invented rollerblades and was able to carry on my dream to the closest thing to ice skating I would be able to find in a tropical climate.
Thank you for the video.
Will you all stop complaining about who ruins the ice before you and all that. Chances are if you've ever skated at all you've put a div it in the ice, doesn't matter what skate you wore.
No I feel stupid. I knew that skates had two edges, but never thought about why they did. I guess I just assumed it was to make them stop faster. Thanks for the wonderful information!!! And if you ever come to the Netherlands, I would advise going to the speed-skating training center. I heard they even had an ice physics department there.
I'd love to see an introductory to physics video series on your channel Dustin. Very interested in physics but overwelmed at the complexity of it
The difference between most of the moves in figure skating is which edge you're on. One spin is forward on your inside edge, and another is backwards on your outside edge. Every jump has a specific edge you take off from and a specific edge you land on. It IS something that most people don't seem to realize!
Thanks for making me feel good, off to my game!
This was fascinatiing. I am a figure skater and I feel like I understand myself better now :D
i like ice cream too..
Dude you are great at explaining things. I know everything that you just talked about and you tackled it perfectly.
This is amazing and my kind of brain food! Love the presentation! I'd love to see one on snookers and pool! As well as inline skating vs roller skating!
Interesting that you should say that about curling, one of my school's physics teachers is on the national curling team ^^
You should do one about rollerblade wheels holding on to pavement. I used to use rollerblades as transportation and it's crazy the angles that the wheels can hold at.
Hockey player living in Colorado via Alabama! Absolutely love your videos. Your passion is obvious and content always interesting. Thank you for showing the world the wonderful things Alabama has to offer! Great stuff!
This is vital information for a beginner figure skater about spinning that usually isn't mentioned in many tutorial figure skating videos
this episode was awesome
"Can you imagine how much math is going through a bird's brain to fly?" :D:D
you can cut out the brain, throw a bird up in the air and it will fly. after landing, it will just stay there. until you throw it up in the air again.
@@koko-lores well no, depends what part of the brain, then yes, the whole brain no. it would die since heart and all.
@@TerrificCupid40 well, no, all of it. Same for cats: cut their brain off the rest of the body, put them on a treadmill, they will walk. Of course you need to make sure that they don't die from bleeding, but it shows that there is no "brain" involved in some of these aspects. Would work for humans, too. Unless we encounter an obstacle, then we suddenly need a brain.
@@koko-lores No? That's just not how that works... You need your brain to walk... and even vital functions like breathing, swallowing, digestion and heartbeat, there can be no life without it... Where on earth did you learn that you can walk without a brain??
@@koko-lores I think you're thinking of dead fish in a current
Wow after watching this video I realized how much better you've gotten at making videos.
I'm sure you don't read comments on a video this old, but you are awesome, man! I click on a lot of your videos thinking there's not much to learn about the topic, but I ALWAYS learn something cool. Keep it going, bud!
Really fascinating stuff. I never knew about the bottom of the blades, good to know.
First time I went ice skating, I sucked, because I tried figure skates first. it was awful. Tried hockey skates, and I easily picked it up...Just like roller blades. I roller blade very well, but can't use quad-skates for my life =P
Also, most hockey players are very smart. A lot of them go to high end colleges, the goalie of our local ECHL team, had a degree is accounting I think. And that's not uncommon.
They're also the athletes you hear the least about..you almost never hear about 'scandals' and/or crime when it comes to hockey players.
-smart-
>
-degree in accounting-
top kek
Xthreeo
>maymay arrows
It takes lots of practice for skating. My hockey team was one of the best in my state last year
Gotta ask, what team you from Stein?
The ECHL? The Ontario Reign.
I watched this 7 years ago when it came out. Came back and watched it again just because. I am thrown by how much younger Destin is as well as the quality of the video. Well to be more specific the quality of the technology used to create the video. The quality of the content has always been high.
Bro your old hockey vids got me missing the rink 😭 haven't been in 4 months
That's why hockey is the best sport in the world!! LOL.. probably not but I think it is.. Great job as always Destin!!
I loved this video, and my dad was happy to finally have an answer as to what a clap skate does, but I went to the tumbler link and the 'Why do speed skates hinge' picture wasn't there. I'd love it if you could put that up somewhere!!!
Either way, love the videos and keep up the awesome work :)
Here you go:
smartereveryday.tumblr.com/image/75904936126
I LOVE YOU! Thanks :D
BruceNJeffAreMyFlies be ,b,,
I can't count on both hands how many times I've watched this video. Fantastic video Destin!
This is the first video I watched from this channel and I AM definitely subscribing with notifications on.
I really enjoyed this.
As far as friction melting goes, I’ve always believed that the melting was from pressure. We know that water expands as it freezes. That makes ice less dense than water. Conversely, compressing ice increases its density, which causes the phase transition back to water.
Water is unique in that in its solid state it becomes less dense, that is why ice goats in water.
i understand that there is math and complex calculations involved in everything, but i'm pretty sure large majority of people are thinking little to none of that when it comes to doing things like ice skating. It's cool to know the math and science of whats really going on, but not necessary to do it, pretty sure most of them do it by practice and feel, not "hey if i turn my legs at this specific angle and apply 30% power to my left leg, then i should be able to turn quicker and come out of that turn at such and such a speed".
If a computer lacks the introspection to recognize that it is computing, does that make it not a computer?
Fun fact: That "hockey stop" motion is also how you stop on a pair of skis. It's also called a hockey stop.
shadow81818 NAH REALLY?!?!?!
+PriestKikyo Really, controlling your hockey stop will allow you to traverse cliffs, chutes (cliffs with trees and are narrow) and bowls in the mountains or on harder terrain. It is easier to stay in control and it is harder to fall into the snow when hockey stopping. It is my experience that a pizza stop (skies like a V) in deep snow will end up as a faceplant with your tips two feet below you.
My team I watch is ice flyers and they go against havoc a lot. So cool to see you talking to one
I've never done ice skating but I'm watching this. Really good video!
One of your best videos!!
Needed this video two weeks ago brother.
As an old-time sub this is awesome to come back to.
Amazing to find this video was uploaded exactly 4 years ago!!
Your videos are just awesome.
CZcams in 2014:
CZcams in 2020: Hey! Watch this.
I've always admired and wished to be a hockey player but this makes me admire them even more. I KNEW it took skill and practice but wow...
Eye-opening as usual. Ice skating is still something I'd like to try, at least now I know how and why I am able to control the skates.
And the reason that film on the solid ice is there, is because solid water is less dense, so an increase in pressure (from your foot or ice skate) would cause that top layer of molecules to break their hydrogen bonds and go to liquid form.
I’m a college pole vaulter and there’s a lot of Physics behind it and also a lot that goes into the equipment. An episode on pole vaulting would be super sick.
I knew there were a lot of physics involved with sports but never this much. Great video.
Hockey and ice skating to that level of skill in general is something I will never comprehend
"Audible Hopes You've Enjoyed This Program"
Also, as a hockey player... Ermm, I mean a club level superbike racer, we don't think about the physics involved with backing it into a corner either, one simply (yeah I know, one does not simply, one will half-kill ones self spectacularly) learns by repitition where the traction of a given part of a given turn's entry is, and by gearing down faster than one should and dragging the clutch more or less right, the rear tyre's resistance via the slipping clutch and engine braking, fractionally exceeds the friction between the road surface and the contact patch. This allows the bike to back in or "feint" in to use the car drifting term, and be steered from the rear with a balance of ever decreasing front brake pressure, and clutch slip. The braking trail off is a discretionary, sometimes you may need to still be trailing a little front brake sometimes not.
Likewise feathering the throttle all the while, and then going positive throttle to actually increase rear tyre spin on exit as you're standing the bike back up, gradually so that when the rear tyre hooks up once you're upright, (larger contact patch toward the sole than in the tyre shoulder increases grip suddenly) and you are shot off down the straight, is also a learned skill. Much I imagine like hockey players don't think about the physics, they feel the skate blade shaving the ice and know how it normally behaves. Need to stop later - less shave, need to stop sooner, more shave.
And... just like a bike, too much and you slide out. Too little and your slide hooks up and you sort of shoot off in an unplanned direction, and either get some airtime before gravity brings your clamping angus back down on the seat, or you highside and do the ragdoll, maybe get chewed by your bike
Do you think it adds an advantage to know the physics, in either racing or hockey? I mean if you can understand the science I think it would work to a greater advantage having the physical muscle memory, but also an understanding of your motion at a greater extent. Although, being an athlete, the last thing you want is to be doing calculations while trying to compete live. That's why we practice. A lot. Sad to see all these nerds in the comments thinking hockey players are just a bunch of meat heads. To be fair, a great bunch of them are. But you'd also be surprised. Peace
My chemistry teacher always told us that ice skates work not by friction, but because of the pressure of the thin blade on the ice. According to her, water is the only element that actually expands as it becomes a solid, therefore when pressure is put on the solid it forms the layer of liquid water you mentioned. Is this actually true or is it just the friction, or maybe partially both?
Yes you have the right explanation.
It's a common misconception; in fact, ice has a layer along the surface where the crystal structure can't form properly, so it's still sort of liquid. This layer is only a few molecules thick, but it's enough to create a low-friction surface on the ice.
You're right but water isn't an element :p
I'm going ice skating tomorrow at the centennial sportsplex for the first time and I watched this to hopefully help me, thanks!