Simulation Coding Challenge #1: Waves

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Code from the video: github.com/lukepolson/youtube...
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Instagram: / mrpsolver

[@aafrophonee]

I'm telling Python that you're cheating on them

[@pritesh660]

😂😂

[@MrPSolver]

LOL

[@dPhi_dTau]

Wow, lately I've been trying to learn some javascript and your video pops up on javascript this time! Really nice to be able to learn JS from a scientific computation perspective. Thanks for this!

[@Lenium_roll]

wow, just wow. Great narration and explanation. Wonderful visualisation. i give you my stamp of approval 💀

[@BruinChang]

Thanks a lot, and your progressive explanations helps. Will you make a seies of the codeing challenges?

[@zacharyprzybilski5943]

This is sick! this could look sick piped into something like a lightbar or an array of LED's

[@thebirdhasbeencharged]

Great video, looking forward to more in the series. Verlet, springs etc

[@Hiyori___]

Are you kidding me??? I’m an acoustic engineering student currently studying numerical methods in acoustics, all basically revolving around wave equations of all kind. I studied strings in all possible ways. I dream about 1D waves. And what do we have here?? A fun little JS to have a break from the C++ mess I use to build VSTs! This is a god-sent video for real

[@Nobuhara]

So cool! Thanks a lot!

[@blackguardian89]

Awesome! Very impressive!

[@HelloWorlds__JTS]

Great work, Mr. J Solver! BTW, did you consider using ghost points beyond your boundaries instead of extending the Dirichlet boundary values inward?

[@ayereraotro112]

I came to the comments looking for this

[@yvespillot1245]

As there is a 4th order derivative for in the equation, there needs to be 4 boundary conditions to the equation. Such kind of conditions can be derived for rods and beams equations (which only include the bilaplacian and not the laplacian) and are really interesting. Could you explain what kind of condition you are inputting for this string problem? Does it matter?

[@soupy5890]

Some differential equations have more or less boundary conditions then their order if I'm not being an idiot here

[@kianureeves2519]

I actually wanna start doing simple text based game development (think ascii characters on screen) using pure python, I'm at the stage I just need to learn how to make a python game engine and run multiple processes at once then I should be able to figure it out :)

[@hericklenin]

Amazing stuff. Thanks for the video. Is there a way to model the way in which the bow hair makes the violin string vibrate?

[@ayereraotro112]

Si, claro. La vibración de la cuerda se obtiene con la ecuación de este vídeo. Como la cuerda del violín está tensa tienes que calcular la velocidad de transmisión de la onda, sqrt(Tension/densidad lineal de la cuerda), saber el coeficiente de amortiguamiento de la onda en la cuerda y la fuerza ejercida por el arco, o la posición en la que hace estar los puntos en contacto y tendrias los datos suficientes para modelarlo

[@neptuno-8821]

Thanks dude.

[@remomagalhaes4707]

very nice indeed

[@addictedyounoob3164]

This is more comprehensive than the calculus class i just failed :C

[@chromax1619]

Mr Js. Solver

[@baldpolnareff7224]

I wonder how feasible it is to generalize it to 3D and make a cool visualization with three.js

[@josegegas]

I think you may like open-source MBDyn

[@yanco6]

Why not use vpython for the simulation he also has mouse interaction and GPU and it also runs on the web and on jupiter and you are stay in python ecosystem for all the math tool of python?

[@mvr192]

Being a beginner in coding 🤯 is all I can say

[@alvarobyrne]

sure you are expecting this one, but, why does the left side ends being higher?

[@alvarobyrne]

note to self: in this channel, there's a video on generating audio from the same 4th order differential eq. , python used in order to generate such audio, wav files, the video is called "I Generated Guitar Audio in python using NUMBA", also a gif is generated for the vibrating string under specific initial conditions. javascript for interactivity, python for generating preproduced files such as gif and wav. node could also be used: wouldn't know how from the top of my mind; guess I could ask some computer how to. can one get interactive with python? maybe using touchdesigner? one should also be able to generate the audio with the same differential equation using the AudioContext API in the/a browser using JS and interactively change frequency and \gamma and \lambda; insist this is a note to self: should go ahead and ask a computer how to code such audio generation! cause also would't know how to do that from the top of my mind.

[@I_am_not_pewdiepie]

okay das cool

[@INCYTER]

Why Javascript instead of python?

[@MrKA1961]

It's faster and makes smoother animations.

[@oneman7039]

no python :( but sweet video anyway, whip tht string

[@gaganaut06]

You are p solver, not j solver

[@alvarobyrne]

JP

[@varunahlawat9013]

Why not in pythonnnnnnnnnn :(

[@MrKA1961]

'cause it's faster.

[@harp-692]

I thought its about scoliosis