- Видео 6
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braintruffle
Германия
Добавлен 10 ноя 2020
Former non-linear dynamics researcher (PhD); now, science educator. 1000-3000 hours of my time go into every single video. I condense numerous research papers and run tons of my own simulations to offer you the key insights.
Find exclusive coding tutorials and videos on Patreon. Help fund future projects via Patreon (my preferred choice) or PayPal.
Find exclusive coding tutorials and videos on Patreon. Help fund future projects via Patreon (my preferred choice) or PayPal.
Simulating Jupiter's comet shield
Why Jupiter was thought to be essential for life on Earth.
Exclusive content
www.patreon.com/braintruffle
--------------------------------
+4 exclusive videos
+3 coding tutorials
Timetable
-----------------
00:00 Shoemaker-Levy 9
02:50 Oterma
04:38 Space gateways
09:53 Potentially hazardous objects
13:53 Asteroid belt
15:52 Gateways cascade
17:44 Jupiter helped in an unexpected way
References
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Shoemaker-Levy 9 as a rubble pile
-Movshovitz, Naor, Erik Asphaug, and Donald Korycansky. "Numerical modeling of the disruption of Comet D/1993 F2 Shoemaker-Levy 9 representing the progenitor by a gravitationally bound assemblage of randomly shaped polyhedra." The Astrophysical Journal 759.2 (2012)...
Exclusive content
www.patreon.com/braintruffle
--------------------------------
+4 exclusive videos
+3 coding tutorials
Timetable
-----------------
00:00 Shoemaker-Levy 9
02:50 Oterma
04:38 Space gateways
09:53 Potentially hazardous objects
13:53 Asteroid belt
15:52 Gateways cascade
17:44 Jupiter helped in an unexpected way
References
-------------------
Shoemaker-Levy 9 as a rubble pile
-Movshovitz, Naor, Erik Asphaug, and Donald Korycansky. "Numerical modeling of the disruption of Comet D/1993 F2 Shoemaker-Levy 9 representing the progenitor by a gravitationally bound assemblage of randomly shaped polyhedra." The Astrophysical Journal 759.2 (2012)...
Просмотров: 487 218
Видео
Master the Complexity of Spaceflight
Просмотров 376 тыс.11 месяцев назад
Think of Kerbal Space PROBABILITY. Extended video incl. chapter 5 - www.patreon.com/braintruffle Topics • Interplanetary transport network • Manifold hopping • Weak stability boundary • Lagrange point orbit bifurcations: Lyapunov - Halo - etc. • Low-energy transfers: 4-/3-body model - effective potential - Coriolis force - zero-velocity curves • Phase spaces (n- vs. 1-particle) • Oberth effect ...
Building the simplest fluid simulation that still makes sense
Просмотров 145 тыс.2 года назад
A vivid introduction to fluid simulation. Topics covered: rarefied gas dynamics, continuum gas dynamics, fluid motion descriptions & coordinates (spatially fixed (Eulerian), material-fixed (Lagrangian), arbitrary), reducibility aspects, motivation on modeling unresolved flow structures, ensemble averages of microscopically and macroscopically varying data, usefulness of the modeling hierarchy, ...
Running back in time is *not* recalling the past
Просмотров 66 тыс.3 года назад
This follow-up discusses fluid simulation related information reduction in view of time irreversibility of the governing evolution equations. We gain an overview of a statistical perspective on the microscopic motion and highlight the implied time irreversibility as well as the exclusion of anti-dissipation. Topics covered/used: Kinetic Theory of Gases, Boltzmann Equation, One-Particle Phase Sp...
How do you simulate what isn‘t there - and still make sense of it?
Просмотров 210 тыс.3 года назад
This is the second part in a series about Computational Fluid Dynamics where we build a Fluid Simulator from scratch. We derive the Macroscopic Perspective (Continuum) from the Microscopic Perspective (Molecules) covering: Collective Molecular Behavior, Local (Non-)Equilibria, Classical Statistical Mechanics, Rarefied Gas Dynamics, and Continuum Gas Dynamics. The Macroscopic Perspective provide...
Fluid dynamics feels natural once you start with quantum mechanics
Просмотров 2,4 млн3 года назад
This is the first part in a series about Computational Fluid Dynamics where we build a Fluid Simulator from scratch. We highlight the Microscopic Perspective on Quantum Mechanics, Molecular Dynamics, and the Kinetic Theory of Gases that underlies and justifies Fluid Simulation Formulations in the first place. The Microscopic Perspective provides the ground for the next part where we focus on th...
this was amazing
Very informative and such perfect animations❤...loved it
The analysis and animations are some of the bests
I’m gonna be so honest and say I didn’t understand even half of what you said. This was just so over my head. But I loved it so much! It’s really an incredible video and you’re an excellent narrator! I still learned a lot, even if I don’t understand everything yet.
I collected various things over the years, but I had to get rid of most them because of moving so much. After I moved to Japan in 2009, I found a local secondhand shop where I picked up a bunch of 1995 re-issues 9f some of the original Star Wars toys on their original packages. I opened them up so that my son could play with them, but he wasn't interested so much. My six year old daughter found them in her brother's room. They are currently living in her play world of Barbie, Pokemon, unicorns, and dragons😅
This video could have been a whole documentary
Do all fluids react to the Coriolis effect the same?.😮🤔😽🦜🤓🖖
The whole energy gateway explanation was difficult to follow. I think you could make it clearer with more context. At 5:08 you say "the camera starts rotating". But why do you start rotating the camera? Then, at 5:21, you say that with the camera orbiting, elliptical orbits look like flowers. But why do we care about that? What's the point of looking at the orbits as flowers instead of ellipses? Then finally at 5:27 you say "this is what we're looking for, right at Jupiter are the major orbit changes." But I have no idea how these facts relate. Do the first two things imply the third? Is the third thing just another observation? Then you start talking about an energy barrier and while I agree that the video you're showing me does seem to have an empty area, I have no idea why that empty area is there, why it is an energy barrier, or why comets can only enter and exit in the spots you've drawn. If you could spend more time talking about how the statements you're making relate to each other, I think that would add a lot of clarity.
hi, i like ur videos and ive been trying to get more into them for a while now, but i just wished taht youd explain the relevant tecnical knowledge as you go. i have a backgorund in physics but i lack the relevant mathematics that i feel are behind most of your videos. concepts such as a manyfold and their relation to energy distributions or the computational methods u use are not immeadiate to me and id love u to put some of the most relevant equations in the video to make following easier. and keep up the great divulgation content!
Amazing visuals and great audio, but I am completely unable to follow. I feel like there are 100 assumptions that aren't said, and I don't know the point. I have no idea if Jupiter does or doesn't have any impact now. The writing I think needs work to match the amazing visuals quality.
Some of the best simulations and visualizations I've ever seen!
I deadass dont understand anything
"We are but stardust, the Universe, pondering its own existence..."
… and Trump wants to eliminate the Dept of Education …😂
Cool story
Revisiting Einstein: E = mc²(1 + k), where 𝑘 reflects the deviation from equilibrium. Energy transitions are now linked to system stability. 𝑘>0: energy-rich, 𝑘=0: equilibrium. Could this unify potential & kinetic energy across physics? I have a more detailed explanation on my reddit under the same name. I've been posting this on channels/creators that I think may get it, and this video talks about things related.
Your animations are beautiful and your delivery is excellent. Thank you for making this!
Can't remember last time I watched such a well-produced, interesting and mind-blowing video as this one! Bravo!
As a history major, self-taught coder, and Christian, I can't help but be amazed that the simple laws of our universe give rise to such a beautiful system of protection. It's amazing to me to see the beauty and complexity of creation, so perfectly suited to us. (Or us suited to it as the case may be)
😲
Would we be arguing Jupiter merits if it had reached stellar critical mass? 🤯
A little bit summary, had to watch twice and think well to get it, but very interesting video!
I'm too high to understand anymore
As far as Jupiter's comet shield goes, is the TLDR version that Jupiter has equal capacity to send comments towards us or away from us, but that since it's more likely to meet comets on near Earth orbits than not, in practice it tends to preferentially kick comets out?
you simulate a dimension you cant see all the time, the 4th dimension is time, when you simulate 2D you are still in 3D if you are representing gravity in your model. Gravity is the curving of the 4th dimension, x,y,z=0 in a 3D world is the bottom of potential, but in 4D spacetime its the core of a massive object. There any velocity is orbital velocity and things would fall up, not down. We are bound by orbital mechanics, thats why you weigh more at the poles than on the equator, even with the extra bulge of the earth, your orbit is higher in temporal location when you have more angular momentum. So you weigh less on the equator even with less mass below you. Einstein showed how to make a 3D universe, make it all into time cones, you see potential mapped from the most massive object, all perfectly circular orbits are horizons, cut the cone across the horizon at any point, and scale it to fit your 100x100 box the same and it looks like the same cone, it will always look 13 billion years to the big bang, and 46 billion years to the CMB, they are the same illusion, that comes from a singularity expanding as it cools/evaporates. We are right at the centre, where space and time straighten back out, inside a second event horizon, its hot and compressed that side of the fence, but cool and expansive this side, as the universe with mass fills the void, it inflates, going nowhere, changing nothing. Everything with mass inflates at the same rate, you dont see or feel any expansion, but its always happening, thats why you fall down, at the centre of mass you translate at the same rate as the massive object, you are null of its gravity and distortions in time, it can inflate infinitely inside finite space, nothing ever getting any bigger, relative to eachother, massless light doesnt change, its just a propagating energy wave. it doesnt need to conform the same way the rest of us do, but a line flat and straight in time, is straight and flat in space, if you have mass. As curved as it seems, the straightest flattest route is the horizon. If you core thru the planet, it seems straight, and shorter, but spacetime is compressed, the density of spacetime isnt the same. As you walked your path your ticks change along the route, its not flat or straight in time or space, if you map for density it will show its not even the shortest route. The problem really comes down to cubes. You use them so much, but nothing in this universe works in straight lines, cubes only exist in our mind Parallel lines dont work, its all probabilities. Euclid showed us that one persons straight line is anothers curved perspective. thats the whole foundation of time dilation, 13 billion years ago the universe was already 13 billion years old in dilated space, another 13 billion years longer and its still 13 billion years to the big bang or CMB, the constant is an orbit, otherwise the planets and stars would all have been consumed as things inflated. The big bang is an illusion, the universe is semi static, there was a start point, but in a dilated spacetime you can never know when the start or stop will be. If it was a big bang then it takes more and more energy to sustain the inflation, "dark energy" you dont need it in my model..
We need it in the KKKKK-SSSS-PPPP
Some of the clearest visualisations i have ever seen. Really really good presentation
Mindblowing
ruclips.net/video/Lt4uIFjVFS0/видео.htmlsi=qqg3km24saBpn6E8
Jupiter is truly the Solar System’s MVP.
Subbed!!
at 5:30 i literally gasped over these animations. i was not anticipating that! its been a while since my mind was blown like that.
god, i hope there is wifi on aliens spaceship in case i get abducted and have to pilot it back home. Or maybe i should just download it for offline use to be safe! ;) Amazing work
Nice vid but you why are speaking in slow motion
“Colloseum sized” ffs americans will use anything to avoid metric
I'm very impressed with that. How you made it, blender, houdini, after effects? Do you have a time ?
HOW did you simulate and visualize this
What a beautiful video. Stunning graphics, clearly explained without dumbing down. Thank you, you've earned an instant subscribe.
Lovely video. It would be nice to get an estimate of the fraction of passages through a gateway that might experience enough forces to, similar to Shoemaker-Levy 9, break up into smaller peaces. Our atmosphere can handle "visitors" for us if they are small enough (and far between), so it could turn one bit threat into many small nuisances. It might be negligible, but I don't know. What is the size distribution of asteroids and comets inside vs outside Jupiter's gateway? Can that hint to whether of not it is neutralizing threats, even when they pass the gate inwards.
man, this is magic. i myself doing a phd in statistical surrogate modelling for dynamical systems, but for the first time in my life i see such a complex and advanced topic explained so nicely and pretty... you are a magician, honestly.
"Jupiter's comet shield" -only planet we've ever seen get hit by comet
It's pretty amazing how accurate this video is!
3:32 what a fanastic animation, well done
light isnt photons and waves, the photon event is where it dumps energy onto spacetime, from there its all waves. Think of it like having a 1 light year cube of spacetime, somewhere near the centre you generate one photon, it is like dropping a rock onto a flat pond, from the impact there are ripples sent out in all directions in the dimension of time, it propagates out, eventually hitting a detector. You would be oblivious to anything happening, until that packet of energy passes your eyes or hits your skin, your brain says "yep i see that" but all you see is the wave of information, the packet gave up its energy onto spacetime when it turned from a packet of energy, into a lightwave. Anything witnessing the event will witness the same photon. If there was a universe of planets for that lightwave to pass by, we would see it arrive here at slightly different times, and we do witness the same supernova multiple times as its lightwaves took slightly different routes from source to destination. There are no parallel lines in space, even for massless lightwaves. Its all waves of energy, when it hits you we think we see a rock hitting the water for a brief moment, but you just witness a past event, its all illusions out here of the past. an object that reflects red is said to be red, but it absorbed every other visible lightwave, if it knew better or we did, we would say its anti red. not really an important distinction until you want to make a photograph. Seeing the world thru a different lens can open up new realities and ways of thinking.
quantum mechanics is just orbital mechanics, on a different time scale and perspective, If you was to remain stationary and give Boeing enough space in the 4th dimension, a plane would eventually fall on your head. it is a statistical certainty, its just a matter of how much time you have to waste. The same math that predicts a puddle of water evaporating should predict the decay of uranium. its just a matter of tweaking C for your situation. Its all just probabilities on different scales of reality, and time ticks infinitely faster in smaller space Fluid dynamics changes with C too, slow down time and you cant tell if it is a solid liquid or gas. At the molecular level its all just vibrating field energy interacting. Speed and momentum change everything, scale and perspective is the weird thing, its all fractal in nature, the biggest and smallest seem so alike, and yet so alien to eachother. But one persons straight line is another’s curved perspective. it is all curved spherical by a dimension of time. the 4th dimension where a line flat in time is flat in space, for an object at rest, bound by orbital mechanics. Light wont confirm flatness in 4D spacetime, it actually gives false perspectives of curved dynamics, that are all straight line geodesics for someone else. I can unite Einstein, Minkowski, Hawking, Euclid and maybe even quantum dynamics into one theory of a semi static universe, inflating as the singularity we exist inside evaporates. it cools and relaxes, things with mass expand to fill the voids and nothing changes, but everything grows over time. Entropy ticking forward for all those experiencing it. I dont need dark energy to explain the expansion, but on one scale of reality we could be an electron shell narrowly missed from being blasted into oblivion like at 5:00 or so. i assume if there was a universe inside that electron shell, then it evaporated instantly. Electron shells are where information gets returned to sender, like an event horizon, information goes one way only, out. If lightwaves could interact with the subatomic then the universe should have evaporated by now. like microwaving itself. We are one realities subatomic, we are string theory and the butterfly effect playing out in real time, its all statistical probabilities on different tick rates. Making the universe into a light cone like Einstein did, it seems like the edge is straight and flat, but in reality its like a coast line, zoom in and it gets messy. We are all on the edge of the cone for a different persons perspective, like James Webb is seeing, things arent always as you expect when you zoom right in, there are going to be oddballs that seem older than the universe could ever be, but its not 13 billion years old, it was 13 billion years old 13 billion years ago, in dilated spacetime, it is always 13 billion years to the big bang and 46 billion light years to the CMB, they are both the same "event" but its an illusion of space and time relaxing, and light being an information wave, its not bound by orbital mechanics like we are. weird we use it as a yard stick. But if you cut Einsteins light cone across the horizon at any point and scale it to fit the board the same, it will always look the same size and shape with the same dynamics to the big bang that never happened. This means the universe should be 13 billion years squared or cubed in age, my 4D math isnt too hot there.. but it always seems the same size scale and perspective, no matter where or when you are in space time, thats why it would always seem to come back to the same point, no matter when or where you rewound the universe from, it always seems the same.. but its an illusion of a multiverse all evaporating together at the same rate, like an atomic lattice. It all scales the same, so nothing actually seems to move. but you feel it. Thats why down is down. At the core of a massive object you expand at the same rate as the other object, no matter how large it is, you dont feel any difference, but if you are offset from where you are, and where you should be for your speed and motion in space, you feel gravity.. it wants you to be where you should be. not where you are. Turning off collision you would settle out to your orbit for your speed and momentum in spacetime, thats why you weight more at the poles than on the equator, even with the bulge of the earth giving more mass below you, your temporal location is higher in spacetime, than if you was dropped at the poles.
28:46 it starts to look like an electron shell, maybe explaining why probabilities make everything decay into lead.
is this 3blue1brown of physics?
I reviewed this cited article : "-Horner, J., and B. W. Jones. "Jupiter: friend or foe? An answer." Astronomy & Geophysics 51.6 (2010): 6-16." Page 6.22: "The traditional idea of “Jupiter - the shield” only holds true when one considers the long-period comets, which are so effciently ejected from the solar system as Jupiter gains in mass that few remain to threaten the Earth. Given that these comets only make up a small fraction of the total impact threat, our startling conclusion is that, overall, Jupiter is not friend but foe!" Can you please explain why an apparently different conclusion is being shared in your video? Thank you
Superb it is! Never seen such a beautifully explained video. Which simulating platform /coding language do you use?