المدة الزمنية 17:56

A Physics Prof Bet Me $10,000 I'm Wrong

بواسطة Veritasium

14 730 348 مشاهدة

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تم نشره في 2021/06/30

A UCLA Physics Professor bet me $10,000 that my video about going downwind faster than the wind was wrong. This video is sponsored by Brilliant. The first 200 people to sign up via https://brilliant.org/veritasium get 20% off a yearly subscription. For more information about the Veritasium Science Communication Contest check out -- https://ve42.co/contest ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ The wager agreement: https://ve42.co/wager Prof. Kusenko's slides: https://ve42.co/Kusenko My rebuttal: https://ve42.co/rebuttal ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ Huge thanks to Xyla Foxlin for building the model cart, and making the instructions so accessible to the public. Check out Xyla's video -- /watch/koA4vGjagUVa4 A massive thanks to Bill Nye, Neil DeGrasse Tyson, and Sean Carroll for witnessing the signing of the wager. A huge thanks to Prof. Alexander Kusenko for being a man of honour -- it's a difficult thing to change your mind, especially in a public forum. A huge thanks to Prof. Mark Drela for the interview and help making sure we got the physics right. A massive thanks to Rick Cavallaro for making Blackbird, all your insights, analysis, data, and general help with these videos -- it was so fun to work with you on this crazy project -- check out Rick's channel https://ve42.co/Rick ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ References M. Drela. Dead-Downwind Faster Than The Wind (DDWFTTW) Analysis (Jan 2009) -- https://ve42.co/Drela 2013 AAPT United States Physics Olympiad Semifinal Exam -- https://ve42.co/AAPT2013 Rick's treadmill footage -- https://ve42.co/Treadmill Rick's multiple explanations of how Blackbird works -- https://ve42.co/DDWFTTW Blackford, B. L. (1978). The physics of a push‐me pull‐you boat. American Journal of Physics, 46(10), 1004-1006. — https://ve42.co/Blackford1979 Ruina corrects errors in the above paper: http://ruina.tam.cornell.edu/research/topics/miscellaneous/push-me_pull-you.pdf Forum discussions -- https://ve42.co/forum Blog -- https://ve42.co/blog1 and retraction https://ve42.co/BlogRetraction Bauer, A. B. (1969, April). Faster than the Wind. In First AIAA Symposium on Sailing. -- https://ve42.co/Bauer1969 Bauer's Obituary -- https://ve42.co/BauerObituary Gaunaa, M., Øye, S., & Mikkelsen, R. F. (2009). Theory and design of flow driven vehicles using rotors for energy conversion. In EWEC 2009 Proceedings online EWEC Md. Sadak Ali Khan, Syed Ali Sufiyan, Jibu Thomas George, Md. Nizamuddin Ahmed. Analysis of Down-Wind Propeller Vehicle. International Journal of Scientific and Research Publications, 3, 4. (April 2013) ISSN 2250-3153. The Manim Community Developers. (2021). Manim – Mathematical Animation Framework (Version v0.13.1) [Computer software]. https://www.manim.community/ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ Special thanks to Patreon supporters: Mike Tung, Evgeny Skvortsov, Meekay, Ismail Öncü Usta, Bill Linder, Paul Peijzel, Crated Comments, Anna, Mac Malkawi, Michael Schneider, Oleksii Leonov, Jim Osmun, Tyson McDowell, Ludovic Robillard, Jim Buckmaster, fanime96, Juan Benet, Ruslan Khroma, Robert Blum, Richard Sundvall, Lee Redden, Vincent, Marinus Kuivenhoven, Alfred Wallace, Arjun Chakroborty, Joar Wandborg, Clayton Greenwell, Pindex, Michael Krugman, Cy 'kkm' K'Nelson, Sam Lutfi, Ron Neal ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ Written and Edited by Derek Muller Animation by Mike Radjabov Manim equations by Jonny Hyman Filmed by Emily Zhang and Raquel Nuno Music from Epidemic Sound https://epidemicsound.com and by Jonny Hyman Additional video supplied by Getty Images Produced by Emily Zhang, Petr Lebedev and Derek Muller

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الكلمات

Veritasium

Science

Physics

عرض المزيد

تعليقات - 52949

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@zollotechمنذ 3 سنوات The extra depth showing exactly how this works was great. Thank you. 2048
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@chadpatrick5112العام الماضي Respect to the professor. Willing to challenge a belief then concede the point when the evidence was compelling. This is pure science at its heart. 2465
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@0222tomiقبل 10 أشهر Kusenko, you legend. Anyone who speaks his mind in a situation like this, gets corrected, and controls his ego like advanced human, putting fun and progress first is the MVP. 1507
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@alexhess1163العام الماضي You tricked me into a physics lecture on a Saturday. Damn you; thank you. 861
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@VicJangقبل 7 أشهر Professor Kusenko gets my respect. Being able to accept being wrong and pay out the bet shows a lot about his personality. His students are lucky to have him as a mentor. 302
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@lukasvit4916قبل 8 أشهر Kusenko has my respect, losing bet in your own science and keeping it civil and admitting he is wrong is truly respectful. he has the balls 285
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@integzaمنذ 3 سنوات This video shows the essence of science with gambling, love it! 984
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@shawncloud1152العام الماضي Brilliant how these guys sit together and get through a problem they disagree on! Truly amazing! 215
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@btminzonقبل 10 أشهر Professor Kusenko is a good scientist. You do good science doing mistakes, acknowledging them, fixing the mistakes and nailing it afterwards. That's the beautty of it! 32
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@JoshuaMartinez-ml5hlقبل 11 أشهر This reminds me of science history where scientists would publicly debate their ideas. Both parties made convincing arguments and from the start i knew id="hidden4" class="buttons"> the two of you guys were educated and strong-willed; regardless of who was wrong, both of you guys look like better men for it. Would love to see videos with a similar styled format! The appeal for me however is seeing two smart people discuss small possible problems, not crazy stuff. Had to rewatch a few times to follow the math a bit better, and thats what Im here for. Stuff like this makes me want to learn and dive headfirst into equations I normally wouldnt pay a second thought to ....وسعت 85
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@rubbermoetrokenالعام الماضي Just awesome, you just stepped up the game from displaying science phenomenons (and explaining them) to displaying what science is (should be?) all about. Well done and congrats to that, also on behalf of my children! 21
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@brianhayden3509قبل 7 أشهر I really appreciate the graciousness of both parties. As stated at the end, 'Disagreements don't have to be a problem (source of friction between id="hidden6" class="buttons"> sides) but an opportunity for everyone to learn.' If only the politicians could apply that principle, how much better the planet would be. ....وسعت 18
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@ElectroBOOMمنذ 3 سنوات Awesome! I think your input versus output power explanation at puts this to the rest why propeller provides a greater thrust forward than ground pulling the car back. and so a net forward force accelerating the car above the wind speed ....وسعت 1415
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@khushshiwani7581قبل 7 أشهر Awesome understanding and explanation. The best part of this explanation is that it is mathematically and physically robust because of those equations id="hidden8" class="buttons"> of power. This is why Veritasium is my favorite YouTube channel, a consistency of good quality content that can be seen in every video.
And with this, this video has become my favorite video on my favorite YouTube channel.
Well done!⛵⛵ ....وسعت 7
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@JSCRocketScientistقبل 4 أشهر Wonderful point at the end! Last year I wrote software for NASA that did my job for them. I then retired happy. In my last two weeks, coworkers realized id="hidden9" class="buttons"> that they didn’t know enough about the physics behind my software. I was thrilled and commented, “I’m happy to be challenged!” I wanted them to USE my software confidently. I laid out the ENTIRE set of equations leading from start to finish. Everyone including me was satisfied. If there was a mistake (there wasn’t) I WANTED to know. Peer review is highly important. ....وسعت 34
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@nicolasdujarrierقبل 9 أشهر I am amazed by the quality of the scientific reasoning and open-minded approach in all those videos !!! It is far beyond my limited math/physics abilities but I love it !!! So great work Derek !!! 29
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@L8nitedaveقبل 4 أشهر The little wheel thing is what solved it for me. I understood the explanation but seeing it in visible terms made a difference. 5
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@theresauwu5019العام الماضي i truly apprechiate when people are honest and use disagreements in a way that doesn't only benefit one side.
i also really love knowing things, id="hidden11" class="buttons"> learning new stuff, having information i didn't have before
that is wehy i like this channel so much ....وسعت 2
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@MakersMuseمنذ 3 سنوات It all clicked so nicely with the castor wheel demo - is there anything hardware stores can't do??? Incredible concept and awesome follow up! 923
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@thercf16guy35قبل 8 أشهر The thing is that people have to be willing to change their ideas in light of what is true and its so cool to see scientists doing this instead of closing their minds on these topics. Well done to the professor 6
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@garytowne1548قبل 11 أشهر The answer is in an analysis of the function of the propeller acting as an airfoil. The propeller blades are rotating and therefore at an angle to the id="hidden13" class="buttons"> apparent wind. As such they can generate forces to propel them at speeds that exceed the speed of the wind. This is how ice boats can achieve speeds five times the speed of the wind. ....وسعت 4
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@brofenixقبل 5 أشهر Wow interesting~ Good for the professor having a level-headed conversation about this topic. 5
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@lissakaye610قبل 4 أشهر I love seeing people come together on things like this! Need more of this these days. ❤
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@philsmith7398قبل 9 أشهر I've been caught up in the news of identity politics, inflation, immigration, war, exploitation.and needed this . Smart people, disagreeing with re id="hidden14" class="buttons">spect, searching for evidence and facts then changing their minds with grace, in respect of the truth! If only we could spread this to other human fields! Thanks to all involved. ....وسعت 13
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@Nightstick24منذ 3 سنوات Wow, I forgot that rational and intelligent people who can have a disagreement, openly listen to arguments against their point of view, and then admit id="hidden15" class="buttons"> they were wrong and change their minds still exist. It's such a rare thing nowadays. ....وسعت 4859
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@Demarketcaterقبل 4 أشهر Translation for an industrial engineer. An electric motor with a gearbox can increase the speed of the output with the same energy input. Energy requirement id="hidden16" class="buttons"> stays (relatively, minus friction) the same despite increased speed, and given there is enough torque to move said object on output shaft the output will move faster. ....وسعت 3
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@72151قبل 3 أشهر Being wrong is the best thing to happen, providing the opportunity to learn what one didn’t know before.
Being respectful and humble about being wrong is championship caliber!
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@Yutaro-Yoshiiالعام الماضي The moving cart with timber was what convinced me. A nice demo! 3
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@andreitocaru2503قبل 11 أشهر very interesting experiment, thanks! From what I saw in the first video, I realized that each pinwheel represents the sail of a ship. And has been shown, id="hidden18" class="buttons"> a sailing ship moves at an angle faster than straight ahead of the wind, and if it goes to the right for a while, then to the left, the ship will go faster than the wind. The spinner on the car is a sail that pulls to the left on half a turn and to the right on the other half turn, from here and at full turn it reaches beyond the wind, so it travels faster than the wind. It's like riding a bicycle, we push the pedal right and left, and as a result we accelerate forward, only here the angular force of the sail is used, when right, when left, for each complete rotation, and the car goes faster than the force that pushes the pedals. ....وسعت 2
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@alexanderwiles2003قبل 4 أشهر i love that the professor only was challenging this point because he thaught "you made a mistake here which you dont often do and i dont want you id="hidden19" class="buttons"> to accidently spread misinformation since you usually are a very trustworthy source" ....وسعت 24
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@neurotransmissionsمنذ 3 سنوات Derek, can you just turn Veritasium into a gambling channel where scientists with opposing views put money on the table and face off to try to convince one another of the true answer? I'd watch that. 91739
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@williamfagerheim1817قبل 6 أشهر This is exactly how science should be.
A great example, and a great experiment. 12
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@StefanReisnerقبل 4 أشهر Another of your videos that made my day. Thank you and keep it up! ❤ 1
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@collegephysicsforeveryone7744العام الماضي Great Job on this Video! Congrats on a professional example of a disagreement online. Such an important example of how we can all behave.
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@billyjoe3309قبل 7 أشهر That board thing was weird to see, really weird!
Respect to the professor who was bold enough to take the bet. 3
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@TheShongjenقبل 9 أشهر Greetings from Germany!! Those kinds of appreciated YouTube clips improved my scientific knowledge and English language by a lot. Thank you very much!!❤
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@BaalFridgeمنذ 3 سنوات "You have a much lower error rate than most youtubers" is probably the highest mark of approval you can get from a uni professor !!! 3740
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@francisprenenقبل 3 أشهر Respect to both of you. This is the way to take science to the next level.
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@hatchermoneyقبل 6 أشهر Professor Kusenko is a rock star. If only the rest of us could learn to apply the scientific method to our arguments - and act (and react) with such honesty. 1
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@XXX-XX-X-Xقبل 7 أشهر I love everything about this. Very good critical thinking by the professor of course: his potential counter explanations are what we need to get to the bottom of phenomena. 2
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@nosville22قبل 11 أشهر I think an auxillary sail under the propeller could make looking at the vehicle more intuitive
but I may be wrong about it's effect on the vehicle 2
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@DanWillsقبل 9 أشهر Flippin' spectacular effort! Love it!
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@whatdamathمنذ 3 سنوات Thank you for making the model available for everyone, Derek/Xyla! 743
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@bryannovak527قبل 3 أشهر What you and kusenko are doing for science is very commendable!
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@paulnormandin5267قبل 5 أشهر Great vid and you present your ideas well and intelligently. Also, props for including Xyla, that woman doesn't know how to fail! She will beat a problem into submission with brains and determination.
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@pixelnobsقبل 8 أشهر For simpler terms, the wind behind the propeller is just like a wall and the fan is a hand pushing against the wall. 3
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@ilsegugio1979قبل 9 أشهر this video shows how hard it can be to explain people without a scientific background (likely a good percentage of the viewers) how scientists work and id="hidden26" class="buttons"> discuss issues professionally, but it ALSO shows it is possible to do so. thank you. all of you. ....وسعت 21
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@paulatwood4603قبل 9 أشهر Wow, one of the best engineering videos I've ever seen.
And what an impressive cast of characters.
I was especially delighted to see id="hidden27" class="buttons"> that Xyla Foxlin was involved
I only recently discovered her to see that she's breaking the gender barrier in engineering.
Also I'm curious to know if you have any thoughts on toroidal propellers.
And I couldn't help but notice that the propeller blades were not faired into the spinner, that seems like an opportunity for just a little more
Efficiency.
Thanks for the education. ....وسعت 3
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@martijnm71منذ 3 سنوات the world needs more scientists, disagreeing about something and the only thing that happens is a very civil discussion. 42701
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@rumanrobertقبل 9 أشهر I love this channel. And i love the fact it has millions of views and subscribers, it gives me a little hope and evidence that people are not only interested id="hidden28" class="buttons"> in stupid sh*tty internet content. This is high quality well thought content, and i just love it. ....وسعت
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@gurbanik1قبل 4 أشهر This is great example how world may not be intuitive and imposible is possible. Beauty of physics and open minded way of thinking. You deserve nobel .
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@enzo.toscanaقبل 4 أشهر Incredible video! Incredible Work! We need more scientific, technical, and educational material. Interesting Physics and Mechanical Engineering with all of these Immensely Knowledgeable & Brilliant Minds.
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@shahidaliableقبل 11 أشهر Tyre Speed in the 5th gear is more than the speed of engine, speed can be change on both ends ,
Size of the blade is also considerable if we increase id="hidden31" class="buttons"> the blade size the cart will move more faster because force of wind on the blade will be more ....وسعت
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@toddatisme8063قبل 9 أشهر I’m late to the party but congratulations on sticking to your guns & coming out on top.
This is also why I love science, everyone puts their egos aside to get to the correct answer. A lot of the “science” we see today has abandoned/forgotten that.
Anyways was legit happy to see that you were correct, I started laughing joyfully & my gf looked at me like I was crazy. ....وسعت 7
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@nightshark1156منذ 3 سنوات "So I called Neil DeGrasse Tyson and Bill Nye" hot DAMN that's a flex and a half 764
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@h3fest671قبل 3 أشهر The way I understand it is by visualizing the car with a sailboat, so the sail keeps the boat moving the same speed as the wind, but on the sailboat, there id="hidden33" class="buttons"> is a completely separate thing collecting other wind to transform the energy backwards therefore moving the car faster than the wind. ....وسعت
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@boumedienesari5380قبل 10 أشهر The explanation with the little kart using wheels of different sizes was perfect, thankss
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@CS-px9rrقبل 5 أشهر Just rewatched this video, and remembered that this waa the video that introduced me to Xyla, Awesome!
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@milocuevasقبل 9 أشهر dude awesome achievement in your physics and youtuber carreer, respect. That’s a like and subscribe right there
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@marvp7202منذ 3 سنوات He disagreed, he still disagreed and then he realised that he was wrong and conceded his position. If only matters of politics and other public debate would be handled in such professional manner… 2639
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@davidwilkie9551قبل 5 أشهر Relative-timing is a holographic gearbox proportioning of sync-duration probability, and is best demonstrated by Euler's Absolute Zero-infinity reference-framing id="hidden35" class="buttons"> containment positioning, Newtonian Camera Obscura setup, and lately, Susskind's ER =EPR Singularity-point omnidirectional-dimensional logarithmic Lensing Origin of inside-outside holographic relative sync-duration-timing positioning. ....وسعت
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@o.aldenproductions.9858قبل 3 أشهر I loved the explanation with the plank and the little roller car ❤
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@weavercattlecompanyقبل 10 أشهر All this is way over my head but the roller demonstration looked like a planetary gear set in action only in reverse.
Engineering for the win 2
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@alanhullقبل 3 أشهر Hi Derek
A point on the math's - something divided by zero is undefined.and not necessarily equal to infinite
Assume 1 = x id="hidden37" class="buttons"> />=> 1 + x = 2x add x to both sides
=> x - 1 = 2x - 2 subtract 2 from both sides
=> x - 1 = 2(x - 1) factorize the right hand side
=> 1 = 2 divide both sides by x - 1
If dividing by zero (x - 1) equals infinite then both sides of the above equation would equal infinite, but they don't. Although the laws of algebra break down because dividing by zero makes something undefined, or 1 = 2 in the above case. So at the moment when your formula has a zero denominator it simply means it isn't going to work at that moment, not that it equals infinite.
Hence you didn't break the space/time continuum in the blackbird, assuming that would be the real world equivalent of infinite.
Love your work.
Alan Hull
Creator of the Hull Moving Average ....وسعت 1
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@aryanverma6660منذ 2 سنوات Are we not gonna talk about how he can just summon Neil degrasse Tyson and Bill Nye at his will 6284
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@joejimenez3706العام الماضي I can’t get this video out of my head. I’ve been thinking about applications for this for years and how to apply it and developing it. I’m somebody with no money. All I have is a dream an idea I would like to meet come true in developing this brilliant engineer work I think you’re absolutely brilliant in your, searching for truth and knowledge and have always enjoyed your videos, especially the aerogel one and many others ....وسعت
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@illbedamned8321العام الماضي Now that's how you handle a win - with class. Well done, man, well done.
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@Mokratorقبل 10 أشهر i actually thought at first maybe its like a very frictionless sail where a sidewind is redirected backwards and is its at a step angle below 45° which would be a 1:1 ratio it might work like that but after explaination i was baffeled that it works directly backwards against the wind. But it really got me when you made the rolling-example with the woodplank. that really does now make sense how it can work if friction is low enough. ....وسعت
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@Quacks0قبل 9 أشهر The gears puzzle is easy; you just look at the sizes of the first and last gear, and disregard all the other gears in between: as long as all the gears are just single discs on one flat plane --- i.e., with no "stacked" reduction-gear-type pairs --- the sizes of the gears in the center don't matter; they will all transfer equal tooth-speed to each other. So the answer is 5 RPS, since the gray gears have twice as many teeth as the yellow gears, and so the 60-tooth gray final gear will move half as fast as the 30-tooth yellow first gear. And the gear-direction question is easy to solve, as well --- you either just "tap forward" along the line of gears and say "left, right, left, right" as you progress from one gear to the next, or just count how many gears there are total, and then say "same direction" if it's an odd number, or "opposite direction" if it's an even number. So in this case, the answer would be "same --- counterclockwise", since there is an odd number (nine) of gears. ....وسعت
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@nedmilburnقبل 10 أشهر The result matches my intuition on the topic, although I did indeed misunderstand the direction of propeller rotation. Glad you won your bet!!
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@DeathEatsCurryمنذ 3 سنوات "You have a much lower error rate than most people on YouTube." That is low-key the best endorsement from a physics professor I've ever heard. 2923
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@nicolasargy7230العام الماضي What an awesome educator. Fascinating So well explained
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@HunkyDoryyقبل 11 أشهر Maybe still important why the professor didn't think it really works. What the professor seems to have missed is the direction the propeller turned. id="hidden42" class="buttons"> The propeller is pushing against the wind, therefore it doesn't drop speed when the wind drops in speed. With a propeller that is pushed by the wind that will be automatic, consistent with the professor's notion. ....وسعت 2
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@Michcioglbالعام الماضي Działa to na tej samej zasadzie co helikopter tylko nie pionowo ale poziomo, toznica jest taka, ze helikopter musi przezwycieżyć znacznie wiekszą siłe jaką jest grawitacja, niż ten pojazd, gdzie jest tylko siła tarcia kół o powierzchnię, jest też tarcie elementów ruchomych pojazdu ale ono jest też wieksze w helikopterze z racji wiekszych prędkości obrotowych śmigła. Tak jak w helikopterze ruch w gore jest powodowany podciśnieniem spowodowanym przez łopatki śmigła tak tu jest ta sama zasada tylko o mniejszym natężeniu. Natomiast napiecie dla oby dwóch przypadków jest takie samo bo łopatki oby dwóch pojazdow są zanurzone w powietrzu. Natomiast "napięcie" powietrza spada waz ze wzrostem wysokości z racji mniejszego ciśnienia atmosferycznego, wraz ze wzrostem wysokości aby helikopter utrzymał się na niej prędkość obrotu jego łopatek musi być coraz wyższa (generować coraz wiekśze "natężenie" aby rekompensować spadek "napiecia" powietrza).
This is how and why it works, cant explain this in english because english is not precise enough or my usage of english is not enough efficient ....وسعت
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@higlanderfitnessقبل 3 أشهر I love it when intelligent people have these discussions online and have a friendly bet. We need more professors and youtubers doing this for many reasons, id="hidden44" class="buttons"> the least just to show you can have conflicts of opinions and still be professional. ....وسعت
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@ShadowVonChadwickقبل 10 أشهر For me, it resembles the action of a sail boat that travels faster than the wind fillings its sails by cutting across the wind as long as it has sufficient id="hidden45" class="buttons"> fins or sharp bow to tract through the water. Thus, the sail acts as an air foil like your propeller and the bow/fin keel alike to your wheels. Where they are mechanically linked by the Mast as your chain does.
Anyway, that what I immediately thought when I saw the testing. Very entertaining and thought-provoking. Loved it. ....وسعت
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@daddydiy9008منذ 3 سنوات I learned that if a UCLA professor says I’m wrong, then I should hire a MIT professor to prove him wrong 3125
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@cakeman1715قبل 4 أشهر Is why Derek is one of the greatest science communicators of all time. First he explains HOW it will work with the math and lever examples. Then he shows you an instantly understandable demonstration of the EXACT effect actually happening in an intuitive way. ....وسعت
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@Twisted_Codeقبل 9 أشهر That demonstration with the giant-third-wheeled model car at was quite compelling for any remaining doubts I had
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@uthoshantmقبل 10 أشهر Bravo for the professor for his integrity. It only makes him greater.
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@Michcioglbالعام الماضي Force of vacume (or just loewer pressure) generated by wings need to be higher than force of the friction moving elements of vehicle
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@quirkyjaywalkerمنذ 3 سنوات Derek - "If I'm wrong, I wanna know."
Flat earthers - "Imma pretend I didn't see that." 2039
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@Akziisقبل 3 أشهر "Math doesn't give you the answers to the unknown but to only what you question" - Doug Reliques 1
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@jhangaviola8821قبل 10 أشهر Motor: a machine, especially one powered by electricity or internal combustion, that supplies motive power for a vehicle for some other device with moving parts.
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@tennisliteقبل 5 أشهر Great experiment. Got me thinking. Good example with the big and small wheels.
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@VCT3333قبل 3 أشهر This is the essence of Adversarial Collaboration. It always improves our understanding and knowledge. Kahneman does this with Psychological Research.
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@RRSDollarالعام الماضي Mr Veritasium, hehehe you are the true scientist here! You care about figuring out things and establishing facts by studying, observing, and testing. id="hidden49" class="buttons"> Even to come with hypothesis or facts that can proof you are wrong! We need true scientists like you in the scientific community, and less the two arrogant that hate to have their pride getting hurt, or allow politics to interfere on their judgement.(They did not behave as true scientists during the pandemic, so disappointing!) Ohh and my humongous respect for the UCLA professor!!!! Another true scientist who is not afraid of debates, and not afraid to swollow his pride, so rare nowadays! Bravo! ....وسعت 1
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@sandeshkolase3986منذ 3 سنوات "Disagreement in science are not problems, but they are opportunities for everyone to learn something" - Derek Muller.Nice one 3234
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@dingosmoovقبل 3 أشهر My first time seeing this video. Wonderful. Love that someone got humbled.
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@davidwilkie9551قبل 5 أشهر Love the Socratic Method and Sciencing = testing.
Technically, IMHO, the science environment is totally about agreeing to solve the problem question id="hidden50" class="buttons"> by using conflicting test solutions in equipment testing, because it's the time-timing sync-duration resonance circumstances and lead/lag, forward/backward, inclusion-exclusion timing-phase positioning of mono-dualistic continuous connection concept, all-ways all-at-once sync-duration holography dimensionality coordination shaping this Eternity-now Interval Actuality. ....وسعت
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@creativecreeper6147العام الماضي When you really think about it, the propeller is pushing the car, which spins the wheels and since the wheels are attached to the propeller, the wheels id="hidden51" class="buttons"> spin the propeller, and because of that the propeller pushed the car, so it well most likely keep speeding up until wind resistance starts to have an effect ....وسعت
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@CasusUniversumمنذ 3 سنوات “When a distinguished but elderly scientist states that something is possible, he is almost certainly right. When he states that something is impossible, he is very probably wrong.” Arthur C Clark 1129
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@yaakovmorn3552العام الماضي Question : could your invention also work on an upward thrust, for example: Rocket Thrust, and in the end saving excessive fuel consumption? 3
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@user-id4zn4yx5hقبل 3 أشهر The same thing applies to a sufficiently fast sail boat, as Prof. Heywood proved to me many years ago when we were sailing Stars..
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@jamesschutte3338العام الماضي Really cool. This was very clear. thank you. What about upwind?
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@elneutrino90قبل 4 أشهر As a person who does windsurfing going faster than the wind that pushes you is an everyday thing, but the interesting thing about blackbird is that the id="hidden53" class="buttons"> direction of movement is exactly the same as wind direction which is mind blowing ....وسعت

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