Lmst

Released into the #PublicDomain and uploaded to #WikimediaCommons, together with the #Mathematica script used to generate it: https://commons.wikimedia.org/wiki/File:Wavefront_Shaping_Focussing.gif

Released into the #PublicDomain and uploaded it on #WikimediaCommons, together with the #Mathematica code used to generate it: https://commons.wikimedia.org/wiki/File:Shack-Hartmann.gif

For the people at Wikimedia Commons: I used to be User:Berto, but I lost my password, so I now I am User:Clodovendro. I make a number of scientific visualizations using #Mathematica, and I release them into the #PublicDomain (and upload the on Commons so everyone can use them).

Woxi - An interpreter for the Wolfram Language written in Rust

https://github.com/ad-si/Woxi

Discussions: https://discu.eu/q/https://github.com/ad-si/Woxi

#mathematica #programming #rustlang

[Перевод] Markdown презентации по-новому: контроллер Nintendo, интерактивный блокнот и немного магии

Как превратить скучные слайды в интерактивную демонстрацию, где код можно запускать прямо на месте? В этой статье попробуем перенести презентацию в браузер, а затем — в «блокнот». Интерактивные среды, такие как Jupyter Notebook, Observable, Mathematica, WLJS Notebook, позволяют создавать живые презентации, лекции и наглядные материалы для коллег или студентов. Они незаменимы и для визуализации моделей, симуляций и любых данных. Под катом — примеры, пошаговый разбор и демо вживую.

https://habr.com/ru/articles/904196/

#ppt #markdown #nintendo_switch #jupyter_notebook #jupyter #mathematica #wolfram #wljs #презентация #гироскоп

oh, man! @Wolfram just sent me a 60 free subscription to #Mathematica .. now i’m just gonna get all addicted..

Гироскоп в презентации или зачем брать с собой JoyCon на большую научную конференцию

Анимации и свистоперделки в том виде, в котором они были популярны с PowerPoint 10 или 20 лет назад, значительно отступили на второй план. Любые технические доклады сейчас - это зачастую просто PDF документ. А хотелось бы больше 🧙🏼‍♂️ Как? Зачем превращать буханку хлеба в космический корабль? И при чем тут физика и webdev? Давайте разбираться! (осторожно! трафик)

https://habr.com/ru/articles/893940/

#revealjs #markdown #wljs #mathematica #jupyter #jupyter_notebook #nintendo #nintendo_switch #ppt

Dear scientists of mastodon, I am once again asking for assistance 😅

I want to evaluate:

F(\omega',\omega)=\int_{-\infty}^{\infty}f(t,\omega)e^{i(\omega-\omega')t}dt

For easy cases, frequency shifting property of Fourier transform will be enough. If f(t,omega)=a, the result will be 2*pi*a*delta(omega-omega').

I've tried to solve this in Matlab, but I lack of any confidence on this matter (script on alt-text).

How would you implement this? Thank you 🫂 😊

#matlab #python #mathematica

$The integral evaluated in t (time) from -infinite to +infinite of a function f which depends of two variables; t (time) and omega (angular frequency), multiplied by the complex exponential of omega-omega_prime multiplied by t. This results in a primitive function F(omega_prime,omega). The script I have made to solve this. However, I am not 100% sure, since even for a simple case (see below the code). % The matrix f was obtained previously and it is a square matrix of 2000x2000 elements, where the rows corresponds to each omega (frequency) and each column corresponds to a different t (time). f_ww = zeros(2000); % Initialise a matrix of zeros. total_iterations = numel(f_ww); % Total number of iterations iteration = 0; % Start iteration counter % Evaluating the integral for m = 1:2000 for n = 1:2000 omega_m = omega(m); omega_n = omega(n); exponential_term = exp(1i * (omega_m - omega_n) * t_vals); f_ww(m, n) = trapz(t_vals, f(m, :) .* exponential_term); % Trapz method % Update iteration counter iteration = iteration + 1; % Calculate and display progress percentage progress = (iteration / total_iterations) * 100; fprintf('Progress: %.2f%%\n', progress); end end My doubt; for an initial matrix f where all its elements are a constant value, I should obtain at the end a delta-like behaviour around the main diagonal, but when I plot the results I get something like sinc(omega-omega_prime).$

Hola! Cientifiques de Mastodon, especialmente si usáis Matlab, Mathematica, o Python. Estoy atascado con un problema ¿Podríais echarme un cable?

He obtenido una expresión analítica general que bajo casos puntuales soy capaz de "resolverla a mano", pero en otros casos las integrales no tienen solución analítica.

\int_{-\infty}^{t}dt'e^{\int_{t}^{t'}ds \gamma(s)}e^{-i\omega(t'-t)}

¿Cómo lo implementaríais en un script de integración numérico? Gracias 🫂😊

#matlab #python #mathematica #science

La integral definida desde menos infinito hasta t con respecto a t' (t prima), de la exponencial de la integral desde t hasta t' (t prima) de una función gamma (dependiente de s) respecto a la variable s, multiplicada por la exponencial de -i*omega*(t' - t).

I didn't have time to fully update the code for #GPUZen3 on #Unity 6 LTS. So for now I'm sharing illustrations code and Jacobian derivation notebook (#Mathematica).
Plus some illustrations I did not use in the book chapter.
https://github.com/soufianekhiat/gpuzen3-ibl-brdf-mis-ssis

The following equations use each of the digits $1$ to $9$ exactly once.

\[\Huge\boxed{567=\sqrt{321489}}\]

\[\Huge\boxed{854=\sqrt{729316}}\]

In fact, there are only $2$ solutions to $n=\sqrt N$ or $n^2=N$, with the condition that $n$ and $N$ together use each of the digits $1$ to $9$ exactly once. See what #Mathematica and #Python return. Also, $n^k=N$ seems to have no solutions for $k\neq2$.

Python code:
[1] https://www.mycompiler.io/view/GEAYSh5dYeG
[2] https://sagecell.sagemath.org/?z=eJyFUduKwjAQfS_0HwZfkrhFUNdbwV_oD4iU7iaVWeykJHFfxH_fTLVeirDzcAiZM5dzpna2AQzGBWuPHrBprQvQGtecQhXQkk-TNNGmBvTlb3VEXXp7PHFGUgaFytMEYnzb5gvJ6FLjAYOHLfjgJCn46B6FutKcCSdH4OMQo-WgSMF2CzsxFRmIGcOc4ZNhwbBkWDGsGTZi3-9WIz328rJf6v4T19ntr3-1dZ08QHqRKcV0Nv9cLFfrjejrez4y2VV0MHKawUblAA8CB5VRZBwixOTHIkluvMtxr15pxTsa5kMaRQpSkF3XYYtbrniTwzqWjscwYx8LqEj_c7TnuHs1qdrWkJZX5vBuNxIb_-zu8ABpwr5xB7bunrjNbR1LqEcs9EyXrFN1Li4j9QdHwLWv&lang=python&interacts=eJyLjgUAARUAuQ==

#Solution #Digits #CollectDigits

[Перевод] Моделируем поверхность Земли в пару строчек

Вы когда-нибудь играли в Outer Wilds ? Планеты там невероятно красивы. Это собственно стало основной мотивацией создать свою простую модель планеты, используя реальные географические данные о высотах и немножко магии Wolfram Language

https://habr.com/ru/articles/872554/

#marching_cubes #геоданные #земля #блокнот #wljs #wolfram #jupyter_notebook #mathematica

Released into the #PublicDomain and uploaded on #WikimediaCommons together with the #Mathematica script used to generate it: https://commons.wikimedia.org/wiki/File:Epicycles.gif

This is what people mean when they talk about "readable code," right?

(This is in fact a valid—and useful—line of #Mathematica code…)

My #introduction in #English seems to have been lost in moving instances, so here's a fast-drawn new one in hashtags:

#science #physics
since 2021 working on
#fiberlinks #frequency #time #transfer #reference #quantum #metrology
before that on
#biophysics #raman #spectroscopy #microscopy #biofilm #bacteria #protein #microplastics

#programming
#python (#fortran #mathematica )

Other interests:
#plants #cats #sciencefiction #fantasy #reading #writing #audiobooks

IMHO one of the prime reasons that most code found in academic (and perhaps corporate?) settings suck is because we don't teach people to use functional programming constructs. I have observed this in #perl, #rstats, #Mathematica & even #C (assuming you take care with pointers).

IMHO One of the prime reasons that most code found in academic (and perhaps corporate?) settings suck is because we don't teach people to use functional programming constructs. I have observed this in #perl, #rstats, #Mathematica & even #C (assuming you take care with pointers).