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Risking My Life To Settle A Physics Debate

Veritasium
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Even some physics professors say this craft breaks the laws of physics. This video is sponsored by Kiwico, For 50% off your first month of any subscription crate from KiwiCo (available in 40 countries!) head to www.kiwico.com/Veritasium50

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A HUGE thanks to Rick and Neil for letting me drive Blackbird. Check out Rick's TRvid Channel for more in depth videos and explanations on going faster than the wind downwind -- ve42.co/Rick

Gene Nagata made the shoot possible. If you’re a video nerd like me, check out his channel, Potato Jet: trvid.com/u-PotatoJetf... .

Xyla Foxlin for made the model cart used in this video. Xyla builds amazing things like rockets and canoes, check it out! trvid.com/u-xylafoxlin

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References
Jack Goodman's TRvid video -- ve42.co/Goodman
Rick's treadmill footage -- ve42.co/Treadmill
Rick's multiple explanations of how Blackbird works -- ve42.co/DDWFTTW
Forum discussions -- ve42.co/forum Blog -- ve42.co/blog1 and retraction ve42.co/BlogRetraction

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. (www.ijsrp.org)

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Special thanks to Patreon supporters: 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

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Thanks to James Lincoln for building the initial prototypes for a model blackbird.

Written by Derek Muller, James Lincoln, and Petr Lebedev
Animation by Mike Radjabov and Iván Tello
Filmed by Gene Nagata, Derek Muller, Trenton Oliver, AJ Fillo and Emily Zhang
Edited by Trenton Oliver
Music from Epidemic Sound epidemicsound.com
Additional video supplied by Getty Images
Produced by AJ Fillo

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28 May 2021

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Daha sonra izle
YORUMLAR 46 276
Veritasium
Veritasium Yıl önce
If you want more detail on the explanation here it is:
Zonuntluanga Hmar
When your online argument with random people is so heated you ended up building a vehicle that seems to defy logic....
Giant Grapes Games
This is totally the post-apocalyptic extraplanetary desert science-fantasy vehicle of unfathomable awesomeness.
Alex0242
This is a very good reminder that science is about creatively answering questions. Congrats to the team who theorized and built the blackbird for using creativity to do what looked impossible to me few minutes ago.
Tyler Raffety
The more Veritasium physics videos I watch, the less I understand how I passed physics in college
The Chieftain A
The whole concept clicked into place for me when you said “it’s a fan blowing against the wind”.
ウタ
I love how simple questions and problems produces so beautiful answers and solutions. What a time to be alive
T33K3SS3LCH3N
T33K3SS3LCH3N Yıl önce
Damn the explanation with the two sailboats was amazing.
Gaminology
Derek, you are one of the most curious individuals I know. And you try to unravel things that seem obvious but are not. I always enjoy watching your videos so so much.
Hari Ennekat
This is the best science content I have watched in TRvid. The dedication and efforts to make it is astonishing. Happy to see potato jet taking care some of the visuals.
Andrew Peck
The faster you go the better the effect should be, the velocity of the air being pushed by the propellor is added to the wind velocity to determine thrust. Super cool demo, one of the best.
Larry Bethune
I love how science has been perverted into an "if I don't understand it, it must be impossible" paradigm. We all need to be more humble. Two sailboats tacking on a cylindrical earth....brilliant!
Zimzim Al
Always love when people prove other “know it alls” wrong
Alec Malisheski
Alec Malisheski Yıl önce
Experiments made out of spite to prove people wrong is the best kind of science
Jace Von
thank you so much to the animator for the boat reference! It would have bugged me so much if the waves were the wrong direction. love the videos, please continue with the amazing intuitive content!
Adam Rogers
The creator needs to make a channel. I will admit I thought it was a photo shop stunt. He stumped most people explaining it and showing it.
T.M.W. A.S.
Tge way he describes it at the end really helps, because it defines how this craft isn’t adding energy to the system, and instead just takes more energy from it’s environment through an unexpected way. At first, i was thinking that the extra drag brought on by the wheels driving the propeller would zero out any extra push that the spinning of the propeller would bring, but considering that the propeller’s push is taking energy from the wind by slowing it down past reaching equal speed to the wind, then it stands to reason that the craft not speeding up would essentially be a destroying of energy, as the speed of the wind behind the craft being slowed wouldn’t actually be doing anything otherwise, essentially that energy would be disappearing if the craft didn’t speed up.
colin ellicott
While at college 43 years ago I saw a fellow student with a small catamaran model with a small propeller below linked to a large propeller above put his model on a small pond with almost no wind and it accelerated across so fast he could hardly get to the other side fast enough to catch it. It was magical, and now I know why. Thx.
Tim Sutherland - Archaeologist
Well done. A great example and explanation.
Zack Comeau
Zack Comeau Yıl önce
The inventor must have been grinning so hard in that shot where he's holding the wind sock. Basically got the best shot possible with great equipment that he was right all along.
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