Quentin
@QuentinWach
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1,216
Following
631
Media
113
Statuses
1,859
I create photonic/electronic integrated circuits @FraunhoferHHI . 💻 AI / CS / physics tweets and simulations. 🧮⚛
The grid.
Joined March 2014
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Pinned Tweet
What system would be a challenge for me to figure out and solve the equations? 🤔
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@Rainmaker1973
Let's please all calm down and wait for this to be peer-reviewed and replicated by other scientists.
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@_vezbian
I have been forced to work with people who used GPT for their writing and it shows... Horrible, horrible writing. It is actually possible to use GPT to improve your writing and get inspiration. But if you just copy+past, the text will be 90% useless filler.
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In these isolating times I am now studying group theory to comfort myself.
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Have you ever heard about Gray-Scott Diffusion? 👌
I made this Animation with Python but there is also an awesome interactive version here:
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The workday is over.
Get some rest.
Treat yourself.
Relax.
Light some candles
and calculate atomic orbitals
considering relativistic effects.
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Today I thought I had made a beautifull discovery in algebraic graph theory, that seemed to beautifull to be true. It wasn't.
As always, I made a mistake three pages earlier.
You got away this time, fields medal, BUT I WILL RETURN.
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Roughly 68% of all values lie within a band around the mean in a normal distribution with a width of two standard deviations. Double the width and 95% of all values are inside the band.
#statistics
Made with
@matplotlib
.
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Until today I didn't know you could prove a mathematical statement by insulting the listener.
Where may I read more about this elaborate technique?
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Open access is important. I discovered the ArXiv when I was 16 years old. I had never read a scientific paper before. So I understood next to nothing. But this open repository watered my mouth and became one of the major reasons why I wanted to go to university.
#OpenScience
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If I had to do one more Taylor-Approximation by hand this week, I'd jump in front of the next bus. So I wrote some code to do this for me with
@SymPy
(plotted with
@matplotlib
).
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9
75
Collisions. The Lagrangian for a bouncing ball ⚽ can be quite tricky to define because it involves a discontinuity at the moment of impact. However, we can use a common trick used in modeling collisions: We mirror the velocity vector on impact. (1/3)🤔
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Here is one of many possible hydrogen orbitals. More to come after the holidays. ⚛️
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Voronoi tessellation divides space into areas where
1) each area contains one point, and
2) every location within that area is closer to its point than to any other point. 😌
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Voronoi structures are everywhere! 🌻
[📷 Images compiled by Francesco Bellelli @ ]
Voronoi tessellation divides space into areas where
1) each area contains one point, and
2) every location within that area is closer to its point than to any other point. 😌
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✍🏻 I used the explicit Runge-Kutta method RK45 provided by
@SciPyTip
to numerically solve the equations of motion derived from the Lagrangian of the system. Animated with
@matplotlib
+ a custom motion blur using
@opencvlibrary
.
0
1
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I'm getting really bad vibes from solid-state physics. Damned phonons.
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Basically, every Quora post about physics is wrong to put it nicely.
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✍🏻 I used Euler's method to numerically solve the equations of motion derived from the Lagrangian of the system. Made with
@numpy_team
,
@matplotlib
, and
@opencvlibrary
in a custom script to create the blur.
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@j_bertolotti
Not sure if you meant this... but everything this thing does looks amazing to me. 🙈
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The explicit Euler method. Approximating the solution to a differential equation given an initial value.
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@nosilverv
The beautiful thing about speaking in a second language is that this falls away. And it helps relationships when both don't speak their mother language because instead of judging every word you try to actually understand what the other person means.
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@thelilynews
All creativity and art, especially when done in private, should be encouraged, the act celebrated.
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@SchrodingrsBrat
Accept your new master.
You are not getting a cat.
The cat is getting a human.
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@kapb0902
@pheezkneez
@ivancedric_a
Sure sure! It is a matter of taste. The more excentric invade Russia during winter.
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0
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Röntgenphotoelektronenemissionsspektroskopie. German is beautiful, isn't it?
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@beast_pixels
@matthen2
I think it is assumed that the one coloured in red is defective and thus harming the others much more
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The five stages of productivity
1. Denial
2. Denial
3. Denial
4. Bargaining
5. “omg omg omg I gotta do shit fuck I am running out of time!”
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@astroparticular
And if they have done too much QM, they even cross their h's even though they aren't ħ's.
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@AndrewM_Webb
@j_bertolotti
"Oh yeah, btw this only really works with the seed 6487 as far as we know, but don't tell anyone."
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@sirajraval
I help people because I like doing so, I am driven to do so as it is a deeply fullfilling experience. But I don't see how it is my duty.
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I just had an actual nightmare where a physicist kept making up quasi particles just to mess with me.
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Einstein, Podolsky and Rosen
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I know the integral should be zero...
but it has taught me that I am the only zero here.
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Can't believe I had to explain to a physics Ph.D. recently that the famous picture of the Solvay conference in 1927 including Einstein, Curie, Bohr, Born, De Broglie, Bragg, Planck, Debye, Heisenberg, Schrödinger, Ehrenfest, Kramers, Dirac, ... WAS NOT A FAKE PICTURE. Here:
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Another one!💫This time without collisions. (No, I haven't yet tried any other initialization,
@InertialObservr
.)
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Never trust an equation you haven't derived yourself.
And certainly don't ever trust an equation you have derived yourself.
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@BatmanHQYT
@SamHarrisOrg
@primalpoly
That's it everyone. Sam ran out of ideas. Let's wrap everything up and go home. Nothing more to see. We had a great time. I'll miss you all 🧡
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I think I am just going to pretend NFT stands for numerical Fourier transform and there is just a community of dudes who just looooove spectral analysis.
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@carwashh
@paindesuxd
You might feel so. But "fucking weird" is a very different statement to "batshit insane".
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😁Officially taking my first MSc class now.
I mean, the pandemic will only further delay the BSc studies I might as well just start with the MSc now.
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Compared to what the internet could be one day we are basically currently looking at cave paintings.
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@PhysInHistory
Popular science 😍
"Men of Mathematics", E. T. Bell
"What Is Real?", Adam Becker
Textbooks 📚🔢
"Nonlinear Dynamics and Chaos",
@stevenstrogatz
"Artificial Intelligence: A Modern Approach", Russel and Norvig
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From J. Samuel Smart's "Effective Field Theories of Magnetism", 1966 😂
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@Mr_Nohmer
proofs are ghost stories they tell young physicists so that they don't get on the wrong path that is mathematics
0
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@pgeerkens
@fermatslibrary
As far as I know, he had an extremely productive period between the age of 65 and 74 with up to 63 works written in 1775 alone (including important letters). Correct me, if I am wrong, please
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@lovedoveclarke
I had like 10 cassettes of old Russian classical music and operas and would listen to that as a kid ALL the time. I don't think we need to "dumb down" music or make it cute for kids for them to absolutely love it.
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It always surprises me how well basic classical models can describe certain quantum mechanical systems. I should make more animations.
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I've just come up with a tiny cool idea/trick, did the math and it actually works. I give myself 2 days max until I realize someone else came up with the same method 150 years ago.
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"What are you?
Where do you come from?
WHAT IS YOUR PURPOSE!?",
he yelled at the minus sign.
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@bayesianboy
Why is the community trashed? Because some people/intellectuals are leaving the site?
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"If you can't find a good model after 4 hours of tweaking parameters, it is wrong.", he wished he could tell his past self.
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@adversariel
If you don't cite your sources because your fear it might lower the prestige of your paper, it probably wasn't very important in the first place. - But what do I know.
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@3blue1brown
This has bothered me for quite some time. Please make a video about elliptic functions/integrals or whatever!
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Some day I'll make a math mistake so big the symbols will light up in flames and I will be sucked into the deepest depths of hell.
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Too many physics derivations out there.
Too few visualizations on how to interpret those.
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I need to install a big lever that will act as an "enter" button every time I start a computer simulation.
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@hardmaru
I hope people learn that we do actually have much more accurate and frankly fascinating mathematical models for neurons than those used in machine learning.
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