Why Do Boats Make This Shape?
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- Опубліковано 20 бер 2021
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This video is about the "Kelvin wake" shape of water wakes behind boats - we talk about mach angle, dispersion, superposition of many waves, and how these all lead to the pattern of a wake. We don't get into Froude number though...
REFERENCES
Boat Wake Wikipedia Page: en.wikipedia.org/wiki/Wake
Interactive Boat Wake Simulation: observablehq.com/@rreusser/di...
Feynman Lectures on Water Waves: www.feynmanlectures.caltech.e...
Building up a Boat Wake from V-Shaped Wakes: editor.p5js.org/aatish/full/b...
Wave Dispersion: en.wikipedia.org/wiki/Dispers...
Mach angle shock waves:
www.sciencedirect.com/topics/...
Ship Wakes - Kelvin or Mach Angle? Rabaud and Moisy Paper: journals.aps.org/prl/abstract...
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Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute!
Created by Henry Reich - Наука та технологія
It’s amazing to see those waves come together to make the recognizable wake pattern. I didn’t know it would be that complicated but it’s really interesting to think about
Hello
Can gravitational waves make similar or really different yet beautiful patterns from which we can do some awesome science?
@@pulkitmohta8964 no dispersion for gravitational waves, I guess: they travel at a constant speed _c_ - or at least only a *very* dense matter can change that noticeably…
@@pulkitmohta8964 no because gravitational waves travel at the speed of light and u would have travel faster to create this phenomenon.
I think it is time to colloborate man
Awesome video. Way more complicated than I thought!
high there
Yes visualization makes easy to understand.
Omg
Sup Derek
Just 4 replies? last time I was this fast when I was a sperm.
Appreciating the fact that i get content like this for free.
This
not really, you are paying with your time spent on ads, still its not too much I think :)
@@ignacyn5346 be quiet
Internet bills, your PC, electricity bills, your internet router
@@creativecreepyturtle1562 the content itself is free
0:31 "In this video, we are gonna explain exactly where this shit comes from."
can't unhear it.
I don't even know what he really says. All I hear is shit
@@l.w.1014 i think it's shape
Lol, I was going to post this too but I think he said "shape".
bruh sammmeee
shift, maybe
I just noticed that for some time these videos aren't actually hand drawn like the older ones. It took me a while to notice, which means that you managed to imitate the look quite well, but I miss the drawing a bit.
Are you sure? I think they still draw some stuff like the boat, water waves and "dispersion" text.
@@2KOOLURATOOLGaming I think it’s tablet drawn with some imitation of a marker. It clearly isn’t hand drawn (if you only include paper in that) when you look at 0:40. They animated the sound waves, and there is no hand moving around like they used to have
On the other hand, this means we get more videos on a more regular basis! There's always a tradeoff.
It allows for more complex visuals.
If you look at 3:21 you can't tell that that isn't hand drown
It's a bit late at night, but they posted, so I'm now a *wake*.
Bruh over here it’s 9 A.M
@@Cumgguzzler same
Coolest dad joke I heard in a while
This isnt MinuteEarth.
Edit: All puns belong to MinuteEarth.
Mood
Damn, I didn't even notice they all have that pattern. Thanks for making these all contents available for free.
i love learning things i never knew i wanted to know
Years ago when I was riding a boat, I thought about a way to know the speed of the ship I was riding in. I got the idea because I knew that the angle of the shockwave of a supersonic thing relates to its speed, so I looked outside expecting a fine, singular wave. I got surprised about what I found and asked myself why. Thank you for finally answering this
This is so good that I though I should leave a comment to boost engagement
Yeah me too
No way, me too!
Silly UA-cam algorithm. I'll do my part for boosting engagement nonetheless.
I though so too
Hehe same😉
Lets appreciete the hours of investigating, animating, drawing... all this for free. Thank Minute of Physics
“Free” as in ads + paid promotion but yeah the gratitude is still there, it works for all.
@@yungmurakami6002 you dont pay sh*t for this quality content, that means its free.
@@kirabey8946 yes, I know I don’t pay for shit. I’m perfectly aware of that. But the channel is funded through ads and paid promotion. If that wasn’t the case, the quality and time put into the videos wouldn’t be the same, or they’d be far less frequent. You’re underestimating the fact that UA-cam is a legit money-making platform. 🤡
@@yungmurakami6002 You're focusing on the creator's perspective. From the user/viewer perspective it is without any cost, especially if you have ad blocker, which means it is free. If OP said, "let's appreciate Minute Physics releasing this for free", you'd be correct, but with their wording, you are not.
0:39 this is a bit misleading, because light waves also disperse when not in a vacuum (which is always)
These are the questions we never ask but definitely need the answers of, and i can understand how amazingly hard it can be for someone to even think of such a question that is original and not already answered from other bigger channels , really great job mate.
i really enjoy the pacing in your videos. and going back to put all the components into one concept really makes for a smooth finish. love it
I absolutely love fluid dynamics.
This definitely not a comment just to boost engagement because I really like this video.
+
Ayy you are uploading much more frequently now, it's great to see!
Yessssssss. I've been studying this!!!! Wooooooooo. I'm stoked to see you make a video on it!
You do a great job at explaining complicated things in a way that is understandable. Good job!
This is good stuff. Appreciate your efforts, Henry.
Fantastic visualization of a surprisingly complex topic! Thank you.
I've always wondered about this and spent any boat ride just looking at these waves trying to figure them out. Thank you for this clear and beautiful explanation.
This is beautiful! Thank you for sharing
Now I wanna do physically accurate wake shader !! Thx minutephysics you're always amazing and straight to the point and leaving us with just enough to dig through if we want to get deeper, but with the proper terms.
Wonderful! This was the most comprehensible explanation for wave dispersion I've ever seen!
Learnt about this in wave mechanics last year, but this was a very intuitive explanation. Thanks for posting!
really really good explanation! well done
Had to do a double take when he said “shit” 😂
Same here
he said shape
@@tonydai782 Source?
@@shade0636 it makes more sense considering what the captions say
@@tonydai782 Yeah good point.
This is brilliant science communicating: Very interesting topic explained in an engaging way. Thanks, as usual, Henry!
the result was so satisfying that I started smiling at 2:55
And I started wondering, why no single videogame that includes swimming or boats got that right so far. It seems not too hard to implement. Would add a ton in terms of visual appeal.
Me too. It's so beautiful. And the way he says it, he sounds like he is happy too 😊
This is extremely wonderful! I love this video! Thank sooooooo much!
I appreciate you changing the thumbnail and title to make it more clear what you are explaining here
I had no idea he changed the title. Its only been 10 hours.
So insightful! I never knew wakes could be described like this
Never thought I'd be interested in the physics of boat wakes, but the way you present your content makes literally anything interesting. Great video!
Beautiful knowledge as always
Watching this really made my day. Absolutely wonderful!
Such a simple solution but such a complex idea i love it, great work
Wow, I love this video!
Really interesting and well explained.
Minute physics finally posts minute videos again
So simple, yet so beautiful!
This is a beautiful and elegant explanation of an equally beautiful and elegant phenomenon. Thanks
Brilliant analysis! I always thought about this, but never in terms of dispersion.
This is amazing, thank you.
Awesome video! Super clear and concise! Keep it up
your all videos are very helpful for all
Excellent video and awesome graphics to illustrate a complex topic in an intuitive manner! I’m an engineer who sometimes does navigation studies (including wake generation studies), and while I’m familiar with the math, this presentation makes the concept much easier not only to understand the physics but also connect the dots between textbook drawings of waves to what you actually see in real life. Well done!
Absolutely love this channel
Another episode of things I didn't know I needed to know but know now after a well made, concise video
really love the animation. It helps me to understand so much easier
This was absolutly amazing
Videos like this is why I love this channel.
This is soooo cool!😍😍 Thank you for sharing this kind of super cool interesting facts with us.
WoW!!! fluid dynamics never fails to surprise me.
I always wondered about this ever since I was a child.. Thanks for making this.
This was a question I didnt know I had. Thank you!
This was just... Beautiful.
simply fantastic
Love this type of content. Thanks form teaching the world :)
Love 💝 your amazing work
From Curious Physics 🔥
Great video. Never think about it in this way
Doing a wave motion module at university right now and knowing a little about the actual maths behind this is lovely
This is so fascinating!
The single lines combining to the complete shape is magical!
This was both awesome and beautiful
Great video with wonderful value. 😃
Great work 🥳🥳🥳 Thank youuuu 💜💜💜
This video reminded me of why I love Physics. Thank you so much.
You have started uploading again love your channel sir❤️
This was awesome explanation
Thanks! Over time I'd gotten lost in doing calculations and forgotten what a dispersion relation *really* is. These visual really help remind me of the physics underlying all of the math.
Man I love this channel.
You gotta love this channel
the progression in the video is just so satisfying... you get a buncha video clips, all these simple concepts, lines, wavelengths, and then BOOM you get a 3D rendering that looks EXACTLY like the clips at the start.
won't be long before we get a supercomputer to render all the particles on earth in real time.
So that is how hamon works! Finally, I understood it, not even all 8 chapters of JoJo let me know the exact method, but this channel do.
One of the best physics videos I've seen on UA-cam
Really nice. Thanks.
Very cool, thank you!
Video was cool and all but I just wanted to appreciate the use of a very nice iv-I release in the figured bass of your background music. I'm seeing more expressive themes while still working in a universally safe sort of space, well done.
thank you for answering the question i didn't know i had.
At first I thought this topic would be way too hard for me to understand, but this explanation made it so simple! Thanks.
Once again, nailed it.
Very interesting, informative and worthwhile video.
Great explanation
I am watching this while having a online physics class with exactly this discussion going on
you have class on sundays?
Bangl;adeshi>:?
@@tommihommi1 He's probably just catching up, but I had lab work every Sunday for the duration of my engineering course.
@@_John_P my condolences. Only people putting in crunchtime for their thesis do stuff on weekends here, and the university buildings are closed on the weekend
@@tommihommi1 yeah in our country we have holidays only in Fridays
Nice info. Thanks
I’m loving these videos! Thanks for the effort. Always very nice illustrations. May I suggest something? It would be great if you did videos with black backgrounds and white drawings. That would be much better for the eye and the battery of the device too ;)
Amazing video!
wow this is so cool!! when all those lines added up my jaw dropped
I love your concise videos, and this is no exception! I do prefer the old music better with the single bass. Having the music at a low frequency, away from your mid vocal range is less distracting.
Excellent!
Finnaly one of my childhood questions are answered. Thank you physics minutes
Awesome explanation, thank you! I'm surprised that the dispersion relation seems so simple though. For light in glass those dispersion relations tend to get quite complicated
Amazing!
This is so interesting and fascinating , i always wondered wtf happen to ship waves
that's so complicated as well as beautiful
Very informative.♥️
That is so interesting. I love it
Brilliant!
Very great visuals
Nice job♥️