Testing If You Can Blow Your Own Sail
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- Опубликовано: 1 мар 2024
- You now know 7 amazing new things and that’s cooler than magic! Get the CrunchLabs Build Box! Two FREE boxes at crunchlabs.com/teaser
I started a company called CrunchLabs, where we build a toy together, and then I teach you all the juicy physics of how it works. So if you want to learn to think like an engineer and have a really fun time doing it, check out the current promotion where you get 2 FREE boxes at crunchlabs.com/teaser
Thanks to these folks for providing some of the music in the video:
Ponder - @Pondermusic
Laura Shigihara - @supershigi
Andrew Applepie - / andrewapplepie
Blue Wednesday - / bluewednesday
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Наука
You now know 7 amazing new things and that’s cooler than magic! Get the CrunchLabs Build Box with two FREE boxes here- crunchlabs.com/teaser
Estoy triste porque hoy es mi cumpleanos y no tuve ningun suscriptor.
I like this
E
Yooo
nice
seated for science class
I'm gonna copy your homework in science class
Actual youtube watches mark rober on RUclips isnt that crazy
Where are the custom 20 million play buttons?
Nice
14 likes
As someone graduated in physics, I have never seen such a clear explanation of what the coriolis effect actually is. Amazing.
dayum
lol
Fact:air is a gas is not a fluid
Somewhat sadly, I feel that he should’ve credited Destin and Derrick since he explained it exactly as they did
@@HRR402VR physics major here, you are mistaking fluid for liquid. A fluid is just a substance that can freely move from force (in the case of air, turbulence or wind).
Bro Mark Rober is the GOAT of science because of how simple he makes science so that everyone can understand.
Thank you Mark Rober!
Nicely explained and demonstrated. Answered some questions I've had. Never felt it an absolute necessity to know the answers to, but interesting to know.
Regarding the backpack: when you study vibrations in engineering, you learn that there's a specific frequency in which you can vibrate a spring-mass system where it will not transfer that movement to the mass. That's why there's a "sweet spot", and all the people in the commercials were running with that sweet spot frequency, where the backpack barely moved even while they were running (i.e. the movement of the person was barely transfered to the backpack). This depends on the spring constant of the springs used, and on the mass of the system (the backpack and whatever's inside it). So if Mark were to put more weight in the backpack, he'd have to find a different running frequency in order to get the same effect.
Thanks for sharing all these cool experiments and knowledge with us, Mark! You're awesome!
Now I'm wondering if it was possible to adjust the stiffness of the spring on the fly. It might be completely impossible to do this to a degree where it can be controlled electronically in real time, but it's a fun thought to imagine the backpack changing its spring constant to stay in the sweet spot for any given mass and walking speed.
@@marzipancutter8144 You could probably leverage automotive engineering concepts for this rather than electronically. If you look at suspension, there are progressive springs which as the spring compresses changes the resonant frequency. You can also get dual rate springs, where you have a main spring of one size/rate, and another spring of another below it on the same strut. That would be ideal for riding on the main spring and retaining resonance over the flat, and the shorter stiffer spring for taking the big dips, and again should stop it from falling into another phase frequency. But of course you would still have the issue of the frequency being dependant on the weight of the pack.
I imagine this is exactly how birds can run with their head completely stationary. Their neck muscles are like a spring, and their head is actually bouncing up and down perfectly in sync with their legs.
yeah my high school teacher managed to explain resonance pretty well so this made sense too :)
Lovely reply
That backpack reminded me, if you walk with your drink, the equal frequency of your steps is building up waves in the mug, so ultimately you spill it. I do my "silly walk" with unevenly distributed steps and it truly helps make my way without spillage. With that walk I basically create waves that go against the waves I already created in the mug, mimicking how active noise cancelling works in ANC headphones.
thanks for the tip!
You should apply to the Ministry of Silly Walks
Deja vu intensifies
I heard that if you grab the mug from the top, it won't slosh as much
I know of the walk you speak of and have had to use it in certain circumstances, but I've had more luck trying to act like a gimble and it's more satisfying when you don't spill XD.
Your explanation of Coriolis effect is really clear. I cannot explain like you even I am a physicist. Thank you.
Love the way you explain everything in Layman's Terms. Thank you for sharing all this content with all of us!!!!!!!!!!!!
If only school were as entertaining as Mark's videos...
Oh no it’s X they’re everywhere
OOGA booga
@@Landybryce berbagiwenas @rekaputri
@@Henyahyah baru kenal wenas @rekaputri
@@Wenas2005 yes
Mark makes science much more interesting and something that catches your attention. I also love that mark puts PVZ music with this, so relaxing and makes it much funner to learn.
How did I not see this 3 weeks ago. RUclips needs more of this content I hope you can keep on creating awesome videos like this one and so many others that I have thoroughly enjoyed watching as an adult well most of them
1st time learning the difference between a Cyclone and a Hurricane. I thought one is air, the other is water based.
I thought it was called a typhoon.
me aswell.
You're thinking of tornadoes and hurricanes. Cyclones and hurricanes are both water based, tornadoes not. I had the same confusion for a moment!
Hurricanes and typhoons are both tropical cyclones. The only difference is which side of the international date line the storm was named.
@@ELPATO136 And hopefully it stays that way for another few birthdays until you grow up and away from begging.
0:48 "Not just what, but why" is the mantra of every good educator! Thank You Mark!
❤
Unfortunately I don't understand the rope thing as I have dyscalculia. I can do basic maths but even then I struggle with 7 times tables and above (10 and 11 is easy though). I can't do algebra nor trigonometry. Physics is also an issue due to that, biology is the best.
In very simple terms, how does the rope thing work?
@@liliowen2132by rope thing, I assume you mean number five, the belt around the Earth. That's actually simple math, the problem is that we imagine it takes a lot more length to do a thing that actually requires very little. You can simulate this for yourself, take a length of rope or string, hold it against a wall with both thumbs. Take a look at how very little you need to move your thumbs towards each other to make a significant bend in the rope.
"because I'm the teacher and I said so", as (unfortunately) many teachers would say.
Your amazing, sience is mostly hard to explain but you make it look easy. Well that is a BIG talent. Respect
I swear if schools took this approach to teaching people would probably be a lot smarter. Excellent job of keeping my attention.
"Does it work when I pour the water?"
LMAO. That guy's reaction was priceless and translated perfectly into 'Ah, crap, you noticed what I was doing.'
I went there with my kids and it looked legit. Thanks Mark for showing the real science.
Mark's videos always make me feel smarter after watching them.
First
This video will be 1 on Trending
Did you buy subscribers?
no same
Youre talking to a literal robot @@bexiexz
Best explanation of the Coriolis effect I've ever seen. Well done!!!!
Thank you for helping to curb ignorance around the globe one experiment at a time!
After a busy, busy week of school, a Mark Rober video is just the thing I need
@@LRmssK4 get a life
smae
Underrated comment
I make better content
Couldn't agree more
Mark would be a great science teacher really enthusiastic and explains things great
He is basically Sid the Science Kid in real life
*Mark Rober inspires me... My parents said if I get 25k foIIowers, they'd buy me a professionaI camera for recording... literally begging you guys...* ❤️🍓
@@universaltoonsstop begging and it will come
Estoy triste porque hoy es mi cumpleanos y no tuve ningun suscriptor.
Yes, but he reaches more people this way.
Love your videos, I am 53 and learning something I didn't know.
Cheers
From South Yunderup
Western Australia 🇦🇺
Wassup fellow Aussie.
what the heck was jimmy doing there 🤣that was so random: "lemme guess, crunch labs" 🤣bro just spawned in
Mark is such a treasure for humanity. Imagine how many kids are getting interested in science because of this gem of a human. What a role model!
cant agree more , im 28 and he gets me interested in science XD
Or adults
Only that is speaking so fast that it gives you anxiety in this video 😅
He’s like a new Vsauce
im 16 and this just helps me with science
When I watch Mark's video, I discover more about science.!!. Love your videos, Mark!!
Estoy triste porque hoy es mi cumpleanos y no tuve ningun suscriptor..
But the earth is flat, I saw it !
@@ThreeSheep69 porque me voy a suscribir si no tienes contenido
@@ThreeSheep69entonces talvez compleanos solo son algo comercial. Lo que passa cuando tu madre ace parear con un multiplo de 365 dias? Nadie.
Cresce
No . Just no.
This generations' Bill Nye, Mr. Wizard, etc. Excellent science class today, Mr. Rober! (Keep it up! I think I love your content even more than my kids' do (and they LOVE it)).
Fantastic and very well thought out video. Keep up the great work...
What's more exciting is when people explain science in a practical way without causing headaches, greetings from Indonesia ❤
Have you ever wondered what it would be like if you had autism?...
@@michaelsambhi4331 I don't know and don't let it happen
@@michaelsambhi4331what a random question. It's not great.
@@michaelsambhi4331 I don't have to. It's not fun.
Hello, Indonesia. Still beautiful? Still diverse?
Thanks for coming by In-N-Out , I was the gentleman that took a picture with you and your family... I was calling out the numbers😁
@@envycollar sowwy :3
@@swabla240No he shook his hand!!!! it was cool
@@swabla240 Why would you make such a pessimistic comment? I've heard Mark loves his fans.
@@mitchtalmadge ye but im probs his favorite fan anyway!!
@@swabla240lol you’re a troll
Gracias por visitarnos saludos desde Ecuador.
Thank you for visiting us, greetings from Ecuador
Love this video, thanks for teaching all this stuff ❤
I've seen videos of the sink demo and have always wondered why over such a short distance we'd see such a dramatic result. I'm glad to see some evidence backing up my intuition. Thanks Mark! obviously *AWMKToken* is in a great spot
Could you imagine how disorienting that would be to walk across the equator
Estoy triste porgue hoy es mi
cumlpeanos y no tuve ningun
Suscriptor.
@@Tiger10002 que bueno
😂😂😂 me too
AWMKToken is a bad idea though
hello
I am a second year middle school student in Korea and a student who participates in the sunpla hanging exercise.
Mark ROBER
Thank you for always uploading interesting science videos and providing a wealth of knowledge.
Always upload interesting videos and work hard.
Hi Korean dude
Thank you Mark Rober - I always learn so much from your channel
I have wanted one of those hoverglide backpacks since they were first put on their funding site. Im sooo pumped you did this!
I love how the bigger your lab gets, the simpler phenomenon you make in the show. And that's the beauty of getting big. You can make things that's already simple even simpler, which is harder than simplifying complicated stuffs.
The Sheer disappointment in his looks after saying "As we all know the earth is... A sphere ಠ_ಠ" Too hilarious. I appreciate your videos Mark
Flat earthers: And I took that personally
@@danti2563 I don't understand why he'd say that. As a former NASA engineer he should obviously know the Earth is shaped like a doughnut
@@chaks2432 You misspelled "Cube" pal.
@@user-zl1vf4me1p i think you meant "Triangle"
@@bananapeel908velociraptor*
I felt like I was watching a Bill Nye video in science class! You explain science in a very entertaining way and I love it!
Thanks, Mark! Wonderful video, as always!!
Impressive dedication and thoroughness with which the myths were debunked. Learning was made even more interesting by not just revealing the answers, but demonstrating how they were acquired.
Estoy triste porque hoy es mi cumpleanos y no tuve ningun.
Suscriptor.
Dont Like This
what is this chatgpt comment
Estoy triste porgue hoy es mi
cumlpeanos y no tuve ningun
Suscriptor
But he got blowing your own sail part wrong. Blowing your own sail does work, just not efficient. We have reverse thrusters on planes that use that principal. It's not like pulling yourself up by pulling on your hair. The energy is contained within the system. Blowing your own sail has energy escaping the system, just that most are going sideways with a little going backwards, hence the inefficiency.
Mark and MrBeast and Mark collab in the same day??
Yoo
Why did you put mark twice
And Ryan Trahan.
and ryan trahan
Hi
Fascinating! I could watch those machines all day.
Wow, I learned a lot in 17mins. This is the kind of recommendation I'd love to see
2:48 that was so funny because I actually got a tour of my brother on the capital and he knew about this and I was able to hear him clearly when he was whispering. It was pretty cool!
I learned so many new things just by watching this RUclips video. That hasn't happened in a long while.
didn't you go to school? everything he tells, schoolchildren in my country study in the first 5 grades of education (they learn this before the age of 12)
@@que5646 Yeah, sure, I am pretty sure people in your country (like everyone else in the world) would still be tricked by some phenomena mentioned in the video, especially the balloon in the car or the rope around the earth because people do not spend enough time to really think about it. Sometimes, the answer is counter-intuitive and people generally go with their intuitions, even when it is wrong.
Anyway, there was no need to be obnoxious but hey, maybe you learned to be like that before the age of 12.
@@que5646 Wish our education system was this interesting, nothing in our curriculum was remotely like this. Some of it like the balloon, I guessed corrected what would happen, but nope our education system is terrible.
@@que5646 That's great for you! Too bad not everyone in the world is given equal starting points in education.
I'm also curious how much of that information you think you can recall, say, 20 years down the road?
Thank you mark. I learned something today. Not sure how I made it 34 years without knowing hurricanes are northern hemisphere and cyclones are southern hemisphere
brilliant explanations as always
This guy made me understand the coriolis effect in a minute rather than 2 whole months of my aviation degree
Came here too comment that😂
I've heard of the Coriolis effect before but never understood what it was suppose to mean
You must have really awful professors then, or maybe you need to re-evaluate your choice of degree
@@rbesfe well an aviation professor vs a literal ex nasa scientist, who do you think the better teacher will be the guy who teaches about planes and aviation or the guy that literally helped with parts to spacecraft
@@randykeith1203 Coriolis effect generally refers to how Earth's axial rotation affects various phenomenas around us
As a Mechanical engineer my self your videos are bringing joy to my heart and soul. Keep it up buddy! Love your squirrel park.
Господин инженер-механик... А что вы думаете насчёт проблемы паруса и вентилятора? Поплывет лодка? Я просто юрист, но мы, юристы, дотошные и доскональные.
Best Video Ive seen this year!
Thanks for a cheerfully entertaining video with many interesting lessons! 🌞
Loved the video. The physics stuff was cool, but what I really enjoyed was your enthusiasm. Love the energy.
Mark single handedly has educated more kids in America in the last year than the entire American educational system combined. 👍👍
He taught me more
Nah the whole world
This just doesnt make sense
日本にも技術届いてます😊
Of course this is what happens when you put most of your time into watching yt videos, rather than focusing on your study.
It's so interesting bro 😊 , esse bhut khuchh sikhane ko mila aur aapne us tourist attraction ka bhanda bhodha kr diya 😂😂, thanks brother
Excellent Video. Really like the content & your presentation style. Thanks
Im 13(14 this year) and never been interested in physics, but a few years ago when i found Mark's yt channel i remember when he was making the squirrel series and now my dream job is to be an engineer! Im bummed that i cant get hi monthly kits, bc i live in a small country called Latvia, which is completely on the other side of the world, so shipping would cost a lot. i just think that Mark is an amazing human being and his videos are one of the few actually useful and educating videos on youtube! 4 years ago i didn't know anything about physics, but now my main monthly event that i can't wait for is watching mark's new video!
I found another science based channel as well! It's called kursgesagt.
noob
That is so cool! You will be a great engineer some day!
okay, im gonna go cry to sleep now and tell my mommy abt you😢@@blurry2246
Nice! Keep learning, stay curious and resilient!
This is the best video yet!
first
second
Caraaaa, o truque do balde no final do vídeo foi sensacional! 👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻🤣😂😂
Tenho 48 anos, e há uns 30 anos uma rede de TV 📺 aqui no Brasil mandou até repórter para mostrar isso, na programação deles de domingo, cara, fiquei admirado com a reportagem na época, e hoje depois de 30 anos só fiquei sabendo da verdade através do seu veículo!👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻🤣🤣🤣🤣🤣🤣
Mark, congratulations on 45 million subscribers, I wish you further success in the channel.🥳🥳🥳
Came here for one clip, stayed for the whole video.
Same here
It’s like mark knows how to grab audience ha
Came for Mark Rober... Wait
Realllll
Same
I watch you all the time... but this videos makes me appreciate how well you explain complicated subjects and make them easy to understand.
That was the greatest introduction to many phenomena that physics have to offer in such a short time. The flat-earthers are going to have anxiety attacks and tantrums over this. This was a great video for kids and adults alike. Great video.
thanks for using ecuador i’m ecuadorian and it makes me proud such a great person is visiting my country
It is still fun to watch the video even if you know the stuff. Mark shows everything practically which is fun to watch bring the heat with *AWMKToken* we gonna have a huge year btw
Estoy triste porgue hoy es mi
cumlpeanos y no tuve ningun
Suscriptor.
AWMKToken is actually terrible
Bot
selamunaleyküm
BOT
Mark Rober is really just out here being the new Science Guy. Getting a whole bunch of people interested and passionate about science. What a legend.
new??? mark rober has been here almost since the beginning of youtube
FYI - New "Science Guy" as in Bill Nuy, not new to the Internet@@autistacat
@sarzidev9487 Bill Nye the science guy is the science guy before RUclips even launched
@@gabrielperez1199BILL NYE THE SCIENCE GUY! BIIIILLLLL NYYYYEEEEE THE SCIENCE GUYYY! BILL BILL BILL BILL BILL BILL, BILL NYE THE SCIENCE GUY! He will FOREVER be the ORIGINAL science guy! I don’t think I’ll ever forget that legendary theme song.
Not to take away from how awesome and legendary Mark Rober is, he just wasn’t the first.
So glad you exist, Mark.
every time you post it makes my day
I love this guy. Mark Rober gives us so much fantastic energy from his presentations, yeah actually gets me Jazzed like a little kid! You earned a dedicated viewer Mark!!!
7:20
only, if you change the shape of the sail a little bit, it suddenly does work. because then it funnels all that air backwards around the fan.
target thrust reverse?
Still better pointing it backwards since you'll inevitably lose some energy to friction as it redirects 180
@@chaoswraiththat's not the point. It's not about whether it's better or not, it's about if it works at all and this was misrepresented in the example with the umbrella.
This would totally work even without and electric skateboard if you do it correctly
@@stefan514 i feel like the testing should have been focused on whether the "thrust reverser" in the form of the umbrella would actually be enough to overcome the friction to actually get the whole thing to move.
Well, yes, just like a simple U-shaped pipe would make it work.
You explain it brilliantly. So much that I sometimes doubt that you are American 😅. Kudos
Mark, for the sail and the fan, what if you put the fan blowing from the side and the sail in a beam reach, then adding a counterweight on the other side? This way, the air molecules bouncing at an angle off the fan would push the boat forward and the counterweight keeps the boat balanced.
Blowing your own sail, while wildly inefficient, does actually work with a traditional CURVED sail. The curve captures the air from the fan and redirects some of it backwards, which provides a small amount of net thrust in the opposite direction of the fan. Love the channel, but I would really appreciate Mark revisiting and clarifying this
He should have mentioned the reverse thrust on a jet engine
Yeah exactly, with thrust reversers being a nice example.
He literally did it on a real boat with curved sails and nothing happened?
@@MrGamelover23Might be because of the positioning of the fan and its size. The fan was much lower than the sail, so the air would be redirected more upward, and perhaps the since the fan was close in size to the sail the air flow from the fan would disrupt the redirected air from the sail.
does that mean that the leafblower & umbrella might work without the motorised skateboard?@@cuddlestsq2730
Wish I had you as a science teacher 50 years ago. I might have actually been interested and learned something. Glad I can learn it now listening to you.
Your teachers were fine, you just didn't care about school.
@@mrosskne So you don't think that teaching is very much a part of a performance art as well? Well, looks like we found the crappy teacher in the comments section.
@@mrosskne I guess you went to school with me and you know all about me so you are able to say that with surety. I'll take part of the blame but I was just trying to say that Mark made this very interesting.
Your vids are my fav keep it up mark
Thanks for the science homework 👍
Wow. I actually watched the whole thing and I have really short attention span. Love how you explained things and demonstrated in a smaller scale/perspective.
The Mrbeast effect
This is the best video yet! Getting back to basics. Making science interesting again!
reverse thrust in Jets uses the same principle as the umbrella . you may wan to look into that. the trick is to get the air to flow in the opposite direction and not flow sideways
This was amazing!!
I am your fan from Russia, thank you for doing the voiceover in my language! I love your channel, because that's how I learn a lot of new things and study science ❤😇
Fax
How did you avoid the draft
bro is gathering American intelligence
@@benkmarchant there is no draft
slava ukraini!
You covered so much !!!! Fascinating info. Thanks for teaching kids and adults. The days Mark Rober posts new videos are like Christmas in our home 🙌🙌🙌🙌
I learnt very much from this video
Thank you
Please make a version of the “blowing your own sail” with an actual dome-shaped sail; it would in fact move forward. Thrust reversers on aircraft work exactly like that and wouldn’t be implemented if they were ineffective, and Action Labs and several other educational channels have made videos showing it working on small scale model “boats”. A flat sail of course wouldn’t work because the thrust of the moving air is directed perpendicular to the boat.
This is the most I have ever learned in 17 minutes. Very great and fantastic video. Thank you very much.
Am I the only one who can't stand the speed and fast edits in this video (and your recent ones)? Much prefer the older style of editing
That's true. it's the new RUclips style popularised by Mr Beast
it feels like he's yelling at me the whole time (and it's not pleasant )
unfortunately thats how youtube works these days
yes thats really true, it‘s the nwe style inspired by Mr, Beast
Attention spans lessen and Stimulation increases 🫨
MANUAL DO MUNDO da gringa kkkk
Otimo conteudo, dinamico e explicativo!
Estranho como um canal gigantesco eu nunca tinha ouvido falar.. e do nada essa recomendação do youtube.
Somebody is going to fall in a ravine with that backpack
I think more engineering is needed with that backpack. I have several great ideas
as soon as you started talking about the rope one and then 6.28 i immediately thought 2pi and glad you went through the mayh
dude i love mark rober easily the best youtube chanel out there. Always new highly interresting theories, knowledge and experiments.
Thank you!
Cinta kita hidup wenas @rekaputri
This guy is a true science teacher
You are better than my science teacher 😂😂😂❤❤❤
The demonstrating practical experiences makes the video pure gold.❤
Indonesiaku wenas @rekaputri
🙂Я просто хочу получать удовольствие от жизни! Я не хочу хамить, скандалить и что-то кому-то доказывать, не хочу тратить время на общение с теми, кто мне неприятен, с людьми, которые меня не понимают, и пытаться достучаться до них. Не хочу пытаться вмещать свои мысли в чужую голову. Мне некогда! Я хочу жить своим настоящим. Я просто хочу ЖИТЬ! Радоваться каждому моменту, каждой улыбке прохожего, каждому дню, в независимости от того, солнечный он или дождливый. И очень не хочется разменивать эту потрясающую жизнь на пустоту, мелочи и бессмыслицу….
@@showpavelraevsky4971 Indonesiaku wenas @rekaputri
Thank you for coming to Ecuador! Wish I would’ve come across you and met you one of the days of your stay.
Bro just taught my entire earth science class in about 17 minutes just amazing
안녕하세요. 대한민국에서 도덕 수업에서 선플 달기 챌린지를 하고 있는 중학생입니다.
마크 로버님 덕분에 최근 화제가 되고 있는 여러 제미있는 과학 영상들을 볼 수 있어서 너무 좋아요!
앞으로도 좋은 영상 많이 만들어 주세요. 감사합니다.🎉
Marks videos inspire so many kids and makes learning science so much fun! Love the videos!
He is such an awesome influence
WOW
Science is a religion for goons. Leave those kids alone!
😂😂@@kwimms
❤❤❤❤❤
This needs to be a series. Love it
I once took a photo half in the eastern hemisphere, half in the western hemisphere. Half the photo was blurry, half of it was centered. I thought that was very cool!
Mark Rober is a former NASA engineer turned RUclipsr known for his science-related content, particularly his creative and educational videos on topics like engineering, technology, and experiments. He's gained a significant following for his engaging style and impressive DIY projects, often collaborating with other creators to create entertaining and informative content.