the world needs more scientists, disagreeing about something and the only thing that happens is a very civil discussion.

It's like... they want to know the truth regardless of their beliefs... Those crazy scientists...

That's what happens when you get people that want to be correct instead of just be perceived as correct.

There is something terribly wrong with scientists. It's like they want to be wrong!

Respectful disagreement works wonders in science, too bad "social" science don´t work the same way.

@Heiðar Högni Guðnason Social science works the same way

Takes a big man to swallow his pride and admit defeat. Huge respect to the professor.

Good point. I don't know if I've ever bet someone money about something I was 100% confident I was right. I'm sure they're well compensated in their professions, but $10K is still very different than betting $10. I don't think too many people, regardless of financial standing, would agree to such a large bet if they believed there was a fair chance they'd lose. Maybe the professor understood that (including as Derek said...a public bet to boot) and was fine with it, but I'd bet (let's stick with $10K ;) ) he was confident he'd win. So right...says a lot about one's character by paying up a solid chunk o' cash like that. Good character these days, is especially valuable. I believe we're more influenced than we might expect by others higher or lower nature even if only indirect or casual contact. Faith in humanity is underrated, but entirely within our power to improve.

unless it was done for money from youtube this guy is a full time youtuber ,,,there are lots of videos on here going back 12 years if this professor did any research at all he would have been stupid the take the bet .....me ....I think it was all done to make money and there was no money sent to him or he would have shown the transfer,

It's sad if correcting your viewpoint in the light of new evidence requires you to be a big man.

@heikki I don't think it was new evidence as there are videos and news reports on here 12 years old and you don't have to look far to find then ,,,,,just type 'faster than the wind ' and they are all there ...surely he has the brains to do that.

If all scientists placed a bet. Science would be a LOT better. Scientists would be far more careful of what they claim to be certain. No politics would come into it. Think about that. (But we must make sure no crowd funders pay their bet for them!)

I love the line, "...disagreements are not problems. They are opportunities for everyone to learn something." This should be a motto for many aspects in our lives.

It is a good line, but does not describe science today. With Covid19, we learned that disagreements in the scientific community should be shunned and banned from public discourse.

the covid19 problem is ignorance rather than disagreement

Don't try to convince a climate "scientist" that disagreement is an opportunity to learn....lol, the science is settled, just ask Mr Hockey Stick Mike Moore or Cook the Books John Cook. Academic fraudsters should face punishment IMO

very much so, and especially in science. Science has to be willing to accept disagreements understand that point of view and be willing to prove it or agree w/it. that's how science is supposed to work.

@T Ric Unfortunately that is not the case with todays "science." Today, the word science is just a useless word used to throw at someone that you politicly disagree with.

I think Professor Kusenko’s skepticism is a perfect example of what makes science such a powerful tool for getting at the truth - only by conclusively ruling out all the possible alternative explanations can we be sure that we’ve arrived at the correct one. I love this bet and the collegial competition. It’s a win-win for all involved!

I see it the opposite way. His skepticism would have kept the truth beyond his grasp. If the professor even thought that there was a possibility of being wrong, he most likely wouldn't have bet $10,000. Additionally "skepticism" is too mild a word, it is a rigidity to linear thinking and an atrophy of creative thinking forged in the process of formal education.

​@carlos oliveira and being overly "creative" is as detrimental as being overly "rigid". Bet like this has happened in science before. Disagreement in science is still a way to figure out the truth. If the experiment proves the theory wrong, then the theory is wrong.

I'm just wondering why Bill Nye was one of the scientists that witnessed the signing

@carlos oliveira you do know the guy that's the main person on this channel is also a PhD right?

@Nadeem Ahmed PhD means very little to me. Lol

"Disagreements are not problems. They are opportunities for everyone to learn something." - That is absolutely one of the best quotes I've ever heard that apply to every aspect of human society

Funny, I use a similar line. I like it when I'm wrong because it means I learned something.

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.

Being wrong is painful, accepting that you’re wrong takes courage. Bet or no bet, I admire the professor and veritasium

It hurts even more when you present such a thought out argument and 10k

@AmericanKid778 ain’t that the truth!

Exactly, go back 100 years and the great debates and clashes around different quantum behaviours.

Where was that acceptance? I didn't see any.

Read the supplied slides from him, he made it an all or nothing bet so it took just one error for him to lose the bet.

This episode had me at the edge of my seat more than most of the shows on Netflix right now. Amazing stuff, Derek. Major props to the prof as well!

Haha, props

I love how he throws in Bill Nye like he was gonna help at all with this.

Dividing by zero, cmon guys 🤣

He did call them celebrities, as they are just that.

He was there as a witness to the signing of the wager. Also, this is a popular science channel, and Bill Nye is a popular science legend, so by virtue of his legacy he has already "helped" with all this.

He does have a BS degrees in mechanical engineering and worked for Boeing for a while. I’m not a giant fan of Nye myself, even though I loved his show as a kid. I don’t necessarily know if he meets the criteria of “scientist”, but he’s certainly probably got a better understanding of science than the average person. Mechanical engineering is not a very easy degree to get, even at the undergrad level.

Bill Nye is a solid cat for having him witness a signature. He has no dog in the fight he's easy to track down and see if he has a relationship with either side and that's a wonderful thing for a guy to witness a signature.

Fantastic episode! People who disagree, yet have a civil discussion. More of that please and keep up the great work.

Such a fascinating interaction, and a true example of the scientific process! Kudos to everyone involved!

Brilliant how these guys sit together and get through a problem they disagree on! Truly amazing!

Awesome! I think your input versus output power explanation at 11:10 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

Ayyyye it's him

why are you here electric boy

Hi Mehdi

mehdiiiii!!! i love you!! ⚡

Eh, still watching and commented early as the video played.

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!

Great technical explanation. Not sure if the has been said in this video or the first one, but I understood this phenomenon when I thought of the following. A sail boat can go faster than the wind because of the vector of the wind hitting the sail at an angle. This is exactly the same thing that happens at the blade in this vehicle. The wind is hitting the blade at an angle that moves the blade much faster than the wind and thus propels the vehicle forward much faster than the wind. Amazing experiment!

I love this type of content. Professionals agreeing/disagreeing and then proving/disapproving. Seeing is believing, proving it just makes it fact.

Awesome explanation. I love the way physists simplify things to us engineers who have a narrower perspective because of specialization in our knowledge in general.

or because we're stupider.😉

Great job Professor, and great job Derek! This is science at its best!

As a professor, I must say, it's awfully nice to imagine what it would be like to have $10,000 to throw away on a bet.

Tru most educators are horribly underpaid

Get a tenure at UCLA Edit:UCB*

The real question, are you going to show this to your students after the next semester starts?

@GhoulDrago most "educators" peddle propaganda and junk science. Don't encourage them.

Especially in California

One thing I enjoyed from the book "A Demon-Haunted World" is how Sagan notes that science works BECAUSE it is constantly challenged. By constantly challenging what we think we know we constantly are pushing science and our understanding of it forward. He also mentions that the most challenged equation in physics is E=Mc^2. I see articles constantly about how some experiment they were hoping would show them something different actually continues to prove that equation. It's good that you and the professor were able to settle this debate and everyone is more knowledgeable because of it.

You can't tell if fortress is impregnable if it has never been attacked.

That's amazing how you turned the cyclonic air umbrella behind the props as a form of constantly variable gear from building a larger and larger air umbrella for the prop to work against. Like expanding an umbrella that can also act as an air gear jet. Makes me wonder if we could do the same for an em field in space to push a ship against the solar winds in the same manner. This should be testable by adding a smoke flair to the top and sides so you can see the vortex flow back, then up and over the car

I watched the initial content and was quietly amazed at the concept. I'm delighted to witness the verification. Great work from all involved. Thank you.

What tricks us is we think that wind is powering the propeller, and propeller is powering the wheels. It is really not easy to drop that schema of thinking and realize that in fact wind is pushing the whole cart what makes it moves and wheels start spinning. That rotation is transferred to the propeller that generates extra push. Thank you for presenting this phenomenon. It proves that much to often we think we 'know' and we are even not trying to understand what is happening.

I like this explanation a lot.

in that case though why have the hole in the middle of the structure supporting the propeller? I mean wouldn't you want it solid to maximize the force of the wind on the vehicle?

​@Nightbob I guess it would help to start the movement, but maybe that would generate drag once the car starts moving faster than the wind around it

@Nightbob "maximize the force of the wind on the vehicle" would be helpful approaching wind speed but a hindrance above it. The craft doesn't travel at 110% wind speed, it travels at around 240% wind speed. So it would be a major hindrance if it caught too much wind. It is engineered to be the optimal balance. However counter intuitive it looks compared to what we might imagine. Ps Until the vehicle reaches wind speed, the blades are catching the wind.

That's the bit I don't understand. If the wind is pushing the whole cart, that stops when the cart reaches wind speed.

What a great video! Excellent work! The one before this was fun, but I had a few issues with it. I didn't need to be convinced. I totally understood what was going on here, although your explanation probably exceeds any I'd have given. ;)

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.

You have entered... the Veritaseum.

ill watch the hell out of it lol

HA! That would be the greatest show on Earth!

​@Dyslexic Mitochondria Hey bro i watch ur videoss. Love ur channeI

Veritasium sounds like a science thunderdome anyway :D

I love it, I hope more scientists can put the ego aside and work together;) This is eye opening;)

This was so cool. That prof really gained my respect.

Science is meant to be challenged, tested, and proven or disproven.. that is where it is fun and engaging to have those disagreements and yet be civil to come up with a better way or to confirm one's work.. I love science and I do believe that more people should have these types of debates.. well done Sir..

I just realised that there is a biological equivalent, called a rolling swarm, used by some caterpillars, who together, move quicker than an individual can. I'm not sure whether this has been pointed out here- probably, but in case it hasn't, I thought I would mention it.

that is just genius!

woah yeah nice catch 👌

I think that adding to your discussion of the sailboat, by calling the propeller’s motion as a long ‘reach’ or an infinite tack angle into the relative wind, might aid in understanding the propeller’s force.

Fair play to the professor. Not easy to admit he was wrong publicly. Man of honour

Yep, people like him need to be celebrated, it is okay to concede for science.

The sign of a true scientist

I mean scientists are used to it. Theres always new evidence

but did he actually do that....or just secretly pay the fine and slink away without going on record(in a video reply) to announce he was wrong - I'd like to see the final response from Nye and especially Tyson too

@Benjamin T. Minkler No need to flog someone over it. Conceding is enough; humans are still human and it always feels bad to be wrong. Scientists are special in that they’re good at swallowing that shitty feeling because they know it holds them and the rest of humanity back.

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, learning new stuff, having information i didn't have before that is wehy i like this channel so much

I’ve seen little string-climbing toys that use this same principle by climbing up a string when you pull down on the string. They’re simple enough that I’ve built them out of Lego :) it somehow never occurred to me that this would work with wind as well, but now I’m obsessed with the fact that it does and I’m glad there are scientists out there doing crazy cool stuff like this just to prove a point.

What an awesome educator. Fascinating So well explained

Now that's how you handle a win - with class. Well done, man, well done.

I think the little wheely thingy was the clearest demonstration. You can perform a similar demonstration by pulling a yo-yo with the string going under the axle, it will wind the string up. Maybe Derek's previous explanation was insufficient but it seems like the professor was convinced it didn't and couldn't work instead just admitting he didn't understand how it worked.

This is the greatest thing about scientific community, there can be discourse. People often don't agree, debate and are hungry for truth. Professor had built his case, but still was willing to come to other side, when better evidences were provided. This is also thing that makes me wonder how these "scientist are covering it all up" ideas come up, when all of the science community wants to discover something really groundbreaking in their field and are willing to bet their name and 10000$ to prove some concepts....

That is extremely perceptive of you RB. 👋 I don't know if you have ever heard of the enigmatic Bessler Wheel. A Rosetta Stone of perpetual motion. Well, I think I can show that the yoyo (cotton reel) demonstration induces an earth reaction which is the source of the Wheel's energy. Newton's "gravitational wind" is the analogue for the alpha atmosphere wind powering the Veritasium device.

I discovered something that's so basic that einstein couldn't accept as true because it's a mathematical clusterfuck to explain, yet i have a working prototype that seems to violate thermodynamics, i'm saving money to patent it. I'm searching for people with bitcoin miners to put it in practice, as i can reduce by +70% the amount of energy wasted, running 3x the amount of miners with the same energy.

@Tark Surmani You are delusional and naive if you believe this to be how the scientific community normally works!

@carlos oliveira It's more likely that you aren't part of said community and don't have anyone close, who is. Or can you present us said scientist, who isn't interested in breakthrough in their field?

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 they were wrong and change their minds still exist. It's such a rare thing nowadays.

Sanningen It is rare lol. Do you live in a cave?

No shame in making a robust logical argument and then dropping it for a stronger one.

Ya! But that can only happen when you are committed to facts and not committed to yourself ! And that's science !

The media bans and censors doctors who disagree with the media.

@Patriot 03 not to mention scientist getting payed by governments to sway the masses - Billy Nye needs to re-think Genders

Question : could your invention also work on an upward thrust, for example: Rocket Thrust, and in the end saving excessive fuel consumption?

Thanks to you and Prof. Kusenko. This is the way it is done, be open to get you mind changed and the important part. Stand by your words. Somethung that is done not often enough today. Thanks.

Well done! Keep up the good work!

I love how light gush out of ideas when they collide. It is in a true scientific spirit that the money coming out of this bet is used to burst into a plethora of great scientific videos, like stars shining in this ho so dark time for science. You, Sir, are truly a light bringer.

Cheers Cobba, youre science is formidable. Much respect i feel you deserve.

Honestly that professor is a very respectable person. He made good arguments, and actually payed the money in the end,

Damn, just got spoiled

yes. he believed in himself and bet 10.000$ and that's something

Paid*

@J D Peighd*

The confusion of the physics professor is very odd to me, it is an interesting effect but the dynamics are not particularly complex, it's just somewhat counter-intuitive. My guess is that this was something of a publicity stunt on his part, a chance to play devil's advocate in a public forum, not an honest disagreement on how the device functions.

Bro this is amazing! I like it when complicated formulas are turned into easily digestible info.

This is beautiful. I think when this happens both scientists should yell "I will science TF out of you!" at some point during the bet negotiations. To really set the mood.

The level of discussion happening here is absolutely fantastic!

This is mainly about how much energy you collect minus friction, and this depends on your collector more than wind speed. Similar to a sailing boat going faster than the wind when going 90 degrees on it any speed should be attainable with the right energy collector.

This was an amazing video. Thank you so much for posting it. I enjoyed it a lot :)

The extra depth showing exactly how this works was great. Thank you.

Naughty Spicy Editz You still keeping that bet?

Naughty Spicy Editz placing a wager on the outcome of a debate is a strange exercise. ANY debate will be inconclusive to some people. People will argue anything. A lot of people seem to get hung up on perpetual energy - this cart is not perpetual energy, it's just a machine that exploits the difference in speed between the air and ground. That difference exists no matter what speed the cart travels, so there's always energy to exploit. That's it.

Didn’t knew you were into this type of stuff

Always learn something new and interesting every time I watch, keep up the great content

This seems very possible 🤔 if you can produce more kinetic energy through the propelar in contrast to the entire body weight and resistance and somehow convert it into forward momentum, the vehicle will move faster than the wind. You will also have to use some tricks to keep the momentum. This is an interesting experiment 😁 Edit: Oh he uses the wheels, interesting.

The board analogy helped me. I was thinking of it like a point on a spinning record. In this example you would be using the wind to increase a point further on the outside of the record. It must increase the speed of all points closer in on the record. Sort of an incorrect scaling from record to earth-size with the cart as the point in this example.

This video brings hope to YouTube and the world of science -- thank you!

This video was amazing Derek I would say this was one of your best video I have viewed your other Videos are also amazing but I really hope we could get more videos like this .

I salute the professor, without his courage and a open mind, everyone will be still in doubt.......

Exactly my thoughts, also 10k is a bit too much, this bet should be over a dollar so next person won't be afraid to bet.

This guy was my professor for an intro physics course and he was amazing

@B D Well, if you're ever in a position to bet Derrik then you can tell him that. Although if you were in such a position I would assume you would actually have $10,000 since you would be a physicist.

Agree. Hats off to the Professor!

@Kimya Peyvan I know! I love Professor Kusenko. Took him for Physics 1A

Great job all around. Kudos to the professor. Makes me want to go back to college just to take his classes.

Disagreements are no problems; they are opportunities for everyone to learn something. Great quote

What really convinced me was the board and wheels demonstration. It was the perfect way to see exactly what was happening

its really counterintuitive, if you push the board forward, the wheels just gets ahead in the board, but its you that is generating force to push both the board and the wheels. So its why the cart doesn't work without wind, the wind is the one generating force to push the cart forward.

@Robson Costa It's not counterintuitive. It's called an example.

The moving cart with timber was what convinced me. A nice demo!

What I really like about this video is how it shows that being wrong isn't something to be ashamed of and that healthy skepticism is an important part of science. The professor, although wrong, had very reasonable and convincing critiques/counter-explanations for why the car was going faster than the wind. This led you to dig deeper into the physics of the car until you were able to provide a rigorous explanation and proof for your claim. Props to the professor for conceding when the evidence showed he was incorrect. Actually, I feel bad that he lost 10k :( That's a lot of money.

"This led you to dig deeper into the physics of the car until you were able to provide a rigorous explanation and proof for your claim." Nah, that was done 12 years ago or something. All the prof had to do was Google it.

@J Modified Technically, that is still digging deeper, even if it isn't deep.

"You have a much lower error rate than most youtubers" is probably the highest mark of approval you can get from a uni professor !!!

well said, Lance friend.

He has a lower error rate than the professor himself at this point

Well my comment was deleted, but I still want to assert that the professor gave a real backhanded compliment in my opinion. Derrick doesn't really deserve to be talked down to and doubted like that and it's very gracious of him to take fault in botching the explanation but holy hell that uni prof needs to take notes from Bill Nye and just be nice.

I could say, Veritassium is already more than a simple youtuber/YouTube channel.

@Kevin Lasher I think the professor was overconfident, put too much weight in weak arguments (like Derek getting into Blackbird many times??), and was also condescending as you suggested. Maybe he thought he would easily win $10000. The already existing treadmill-footage clearly showed the cart wasn't being "pushed forward"; there was no "bias" in that sense (the bias was in the professor's mind that people would be as silly as to do the treadmill experiment repeatedly and always "unconsciously" push it forward). But mainly, "the video falls short of providing evidence that the motion faster than the wind occurs with a non-negative acceleration and that it is not caused by the wind variability. " Derek's treadmill experiment clearly shows there is positive acceleration relative to the ground. Unless he was suggesting that somehow the wind behind the propeller acquires higer speeds, or to vary so much so as to get the negative acceleration he mentioned. Again, clearly not present in the treadmill experiments. It seems he is trying to look gracious "Oh well, I had to concede if I wasn't 100% correct". But he was just wrong. To me, the main issue was understanding how the "turbine" worked. In any case, he should have gotten himself fully familiarized with the problem (or maybe he actually was, and is playing dumb) before betting that amount of money...Apparently didn't even check the literature on the problem. The professor suggested the bet right? Kind of weird. Not sure what he wanted to get out of it. Maybe "school a youtuber"? Prevent the spread of what he thought was pseudoscience? In brief, arrogance got the better of him.

Given the considerably crude construction... I'm amazed at the outcome. The fact this vehicle achieved it's goal in it's first iteration, blows my mind, when you consider all the parasitic energy losses. Not the least of those variables which COULD have been wrong, is the choice of gear ratio. I can only imagine what a properly refined build may be capable of. A more efficient prop, a lighter chassis with a sealed aero body... yeah.... this could be the next big thing in mechanical engineering competitions.

"Not the least of those variables which COULD have been wrong, is the choice of gear ratio" The prop has adjustable pitch, so that isn't really an issue as long as the gear ratio isn't too far from the ideal for the prop with centered pitch under some specific wind conditions. And if that isn't the case, the gear ratio is adjustable between runs. But for the toy car you are correct, as it has fixed gear ratio and prop pitch. Of course, for the toy car the exact wind speed is known in advance and cube-square law is in your favor.

@J Modified - regardless, there obviously multiple routes of improvement in the design. I'd love to see this takeoff, like the Human Powered Vehicle competition.

@James Copeland There are a number of areas for improvement, but I suspect you'll find that the construction may not be as crude as it appears when you look at the critical components (propeller, drive-train, wheels...). Unfortunately, the pitch of the blades was out of alignment during the making of this video and that makes it look absolutely horrible. But I've had it up to 54 mph and - rock steady. I would also love to see this become a regular competition. And I volunteer to help any team that would like to improve upon our record. It wouldn't be all that hard to do.

Could there be an application for this on the water with hydrofoils? Maybe there's an initial input to get the vessel moving fast enough to get on the hydrofoils?

When I was 19 I made a coil that can be plugged into any household outlet and it makes non ferrous metals (non magnetic like aluminum) float on a magnetic field. A nuclear physicist didn't believe me so I let him and his colleagues marvel over it until they left it plugged in to long and burned it up. The thing is. It's actually very old technology. And I mean very old. The patent ran out on the "repulsion coil" in 1921.

W H A T :O

I'm not disparaging Your accomplishment in any way, but I must say that that only sound like crappy "nuclear physicists" to me... I mean as You say, it has been done before and is a "known principle". I would guess it's an effect similar to the induced eddy currents that You get by moving a permanent magnet close to the same "non ferrous metal"... But instead of moving the "non ferrous metal object" You build an electromagnet that changes it's magnetic field...' Best regards

A continuous motion machine is not possible as made evident by any man who exhaustively uses his energy for decades to obtain the smallest distance back and forth which may last upwards of 20 minutes but most below 10 minutes and after assumably becoming more skilled and adept can no longer get any motion no matter how much effort he can produce.

@Joseph Böhme Perpetual motion is possible but it can't produce enough energy to power anything but itself as the video proves. It will keep going as long as there's a ball. But it can't produce enough energy to power anything else. Only itself. Now I understand what youre saying because I'm 60 years old and every day I move slower and slower and have less and less energy.

@Joseph Böhmehey man, a sex joke made to a group of science enthusiasts is always gunna be a miss…

I'm a prop plane pilot and a (very amateur) sailor. From the first presentation of the problem it was obvious to me the wind speed would not be a limiting factor in any direction of the craft, as long as there is enough wind to counteract the friction forces. This machine can travel upwind, downwind, or perpendicular to the wind faster than the wind - assuming a rotatable propeller mast and enough control authority over the pitch angle of the propeller blades. The biggest surprise for me from the whole thing was that it is not as intuitive to physics professionals like Prof. Kusenko.

Works fixed-pitch too, which all of the treadmill versions are.

Right? If this didn't work then a bunch of common sailing techniques would not work.

I want scientists betting each other to become the new way that science progresses.

Thank you for making the model available for everyone, Derek/Xyla!

hi

Ooooo Anton.. 😍😍

Hello wonderful person

Oh hello there Anton!

hey its a wonderful person!

Nice job proving you can do it! And explaining it so I could even comprehend it!👍. Perfect

Derek awesome video. One question - isn’t this also explained by the wind tunnel concept?

Thought provoking as usual. Excellent

It's so delightful to see the internet used as a forum for real investigation and dialog.

dude you could have thanked the prof for making you develop your explanation and proof, and inciting the production of an even more convincing video. Like you could thank him with some of your income for this new prod, he's earned it.

He already makes upwards of 200k per year so I think Kusenko is doing okay Source: I’m a physics student at UCLA and have checked how much our professors make by checking CA public records

It all clicked so nicely with the castor wheel demo - is there anything hardware stores can't do??? Incredible concept and awesome follow up!

lol

They can't do software. ... Sorry, I'll leave now 🙃

@D:\side\ lmao well played

That was a very good demo.

Nice! I wonder whether it would have taken out a source of ‘error’ by using a strain gauge holding the model on the treadmill, instead of having a human guiding the model on the treadmill. I would expect that the gauge would show some force being exerted, indicating an acceleration force? But of course, there’s a lot of counter-intuitive stuff going on here so my intuition could be way off 😂

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

i wish our politicians would have honorable discourse with each other like these two gentlemen. we would all be better off.

Great Job on this Video! Congrats on a professional example of a disagreement online. Such an important example of how we can all behave.

Dr Kusenko! I took a class with him years ago. He's a great guy! Also, what a group of witnesses!

Wow this was awesome! I understood about 1/10th of this video but I feel like I just gained a new wrinkle

Same

That's all any of us smooth-brainers can ask for ;-;

Love how my favourite youtubers, love my other favourite youtubers as much as I do

Andrei, you don’t know how happy I was to see your comment below this video! I study a combination of Management and Mechanical Engineering, so Finance and Physics are my thing, even on Youtube... I have been watching your videos for years!

I think that the mark of a good and wise life is to, in every possible condition of things, give more consideration to being informed of truth and facts than to being right or proving another wrong.

Prof Kusenko: We all need to aspire to be like him. A man of conviction, educated with well backed arguments. He theory was disproven and he graciously accepted the answer and embraced the proven theory. If the entire world were more like him, we'd be much better off. This video was fantastic, thanks for sharing.

Not so gracious unfortunately. Someone posted his "concession" above. It's very petty and arrogant.

@Bendik Thanks for sharing, did not realize it was there! Will check out. Was awesome that the $10k were not use for personal gain, but rather for improving the base of human knowledge. We need leaders like this, I love this channel.

I cannot believe people are so easily fooled he only had to look on this site to see the record had been made 12 years ago ,,,so you believe he did not check by two minutes of looking and bet $10000 ,,,they could not put it in his bank because it did not exist ,,,anything for money as you should know he is a full time youtuber so it all in his pocket.

You tricked me into a physics lecture on a Saturday. Damn you; thank you.

I was so convinced that this was immpossible untill I saw the demonstration at the end 13:32 I thought this was just perpetual motion, but this demonstration makes sense.

The professor is a true man of science. He was wrong, admitted failure, and learned something new! If only all scientists were so pure.

Not just scientists, but people in general.

His admission was less than complete if you followed the discussion on Twitter. It was basically “I was right, but there was a stipulation to the requirements I didn’t take into account”

It's hard to argue otherwise when the result is evident...

most scientists are tho

@ThreepE0 : Did he say what that stipulation was?

One issue that’s not being addressed is friction, between gears/ chains the wheels and against the ground plus wind resistance

Wow. I love learning. And that was mind blowing!! New subscriber from a suggestion from Antov's videos :)

Experimental evidence is more powerful than theory because theory is just a fancy term for an educated-assumption. Well done Derek!👍

You are actioning “Science advances through falsification, more than verification!” Keep up the great work of questioning all assumptions about reality - that’s how science advances!

This was like convincing the reviewers of a reputed journal about your work until it gets published!!!😅

Now THIS is a very good example of a scholar who is really dedicated to learning, not oneself’s pride. I honestly think UCLA is blessed to have such an awesome professor!

ucla has a prof that believes in perpetual motion devices lmao.

He also did utterly fail to do any research. The science was established beyond a reasonable doubt.

The professor is going to be publicly known as a fool after this. He's going to be hearing jokes about this from students for the rest of his career. Even his wife will be pissed at him for losing $10k. I had a professor in engineering school that said it is impossible for an electric motor with a propeller on it's shaft to be able to lift it's own weight. I wonder if he ever sees these drones flying around and has reconsidered his position.

​@alexkram No. The professor was correct that the explanation was faulty in that there was a singularity issue. This prompted him to rethink a model which led to him believing that it wouldn't be theoractically possible. Turns out that if you use a nonlinear model for force and momentum, you get a perfectly convergent model for the power transfer.

Ok

This channel makes school jocks want to major in physics. Great job.

God bless sceptical scientists, we need more of them

Wow, Excellent video! Refreshing and intelligent outcome, well done!

Would have loved to seen Neil and Bill pitch in $5K for their education on this one.

As a construction worker with a public school education in a Republican run state I am extremely impressed. The car moving faster than the wind has almost a perpetual motion type of feel to it.

Are we not gonna talk about how he can just summon Neil degrasse Tyson and Bill Nye at his will

@MAXStephen I’m saying

Neil came to osan airbase when I was stationed in Korea it was pretty cool

those 2 arent that hard to summon

Nerd Whisperer. Lol it’s a joke. Don’t @ me

@Pixel It is. I’ve been expecting you.

easy to forget that gain ratios exist (even for physics profs). Always looks like energy is being gained, but you're simply trading in torque for speed with a net conservation. downwind cars are rad, can't help but think this might be able to improve wind power if tuning the rpm allows for a more efficient generator/blade.

Imagine both Neil and Bill thinking you're brilliant, he probably looks up to them.

This should be shown in ALL 8th grade science classes. It's honestly not even about the main video its about showing kids being able to respectfully disagree and being wrong are totally fine. That is how a discussion works. With media in todays age there is a polarizing image rising that people can't disagree and people can't be wrong because of gotcha journalism. WE NEED PEOPLE TO BE WRONG. If people aren't willing to be wrong people aren't willing to challenge ideas. There was a famous experiment done a while ago sorry I'm blanking on what it was called and when it was conducted but basically what people did was got subjects that were going to answer a question wrong on purpose and people that knew the right answer were going to watch all those make the wrong choice but they didn't know it was done on purpose they all thought they were totally random subjects brought in for something totally unrelated. When the random test subjects watched several other subjects make the same choice (the wrong choice) the genuine random subject would then choose the choice all of the others made even when knowing it was very clearly wrong. This is the problem that we see in these young kids today. No one can share their opinion and be wrong without getting trashed and bullied. How are we supposed to have any further advancement if these kids (our future might I add) are being told they can't think. They have to believer everything they're told and they can't formulate their own opinions. I truly do believe this black and white culture (not race related lol) we have built is stunting the development of these young kids because you learn by asking questions and they are being shut down and shamed every time they ask a question or formulate an opinion.

Unfortunately we don't really have that. To this day Kusenko refuses to admit he got it wrong. He claims he paid the bet on a technicality.

I imagine a vacuum of sorts that is created when Back Bird goes at the speed of the wind. This allows the wind indicator at the front of the vehicle to drop, even though the vehicle is still moving. The vacuum then allows the flow of energy to increase in the same direction, with less drag. Similar to the drafting effect, when people ride dangerously close behind a truck, to reduce drag and use less energy to travel at the same speed. The Black Bird maybe drafting inside its own vacuum bubble. The propeller and the precise direction of travel in favor of the wind might the the two conditions necessary to create this vacuum bubble.