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qmbphysics.bsky.social

@qmbphysics.bsky.social
189 followers 390 following 119 posts

PhD physicist, mainly interested in the quantum many body problem & some AI/ML. I will occasionally post physics stuff. Aka quietphysicist and susurrus1 on other sites. Maintainer of: @arxiv-nucl-th.bsky.social and @arxiv-nucl-ex.bsky.social

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Reposted by @qmbphysics.bsky.social
Physghoul 👻 🎃 @physgal.bsky.social · 21/06/2026
👩🏻‍🔬 ⚛️ 🧪
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Stacey Ogden 🦔 @labogden.bsky.social · 03/06/2026
Make some noise about this 🧪 www.npr.org/2026/06/03/n...
npr.org
President Trump seeks control of science funding
The White House Office of Management and Budget is moving to take more control of billions of dollars in federal grants. Critics say the proposed change would jeopardize the integrity of U.S. science.
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David Blanchflower BSc @davidbflower.bsky.social · 11/04/2026
Splashdown! 🔭 🧪 #astrophotography #ArtemisII
Orion with three parachutes splashing down in the ocean.
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qmbphysics.bsky.social @qmbphysics.bsky.social · 05/02/2026
Glad to hear the encouraging news. I hope this all gets resolved on its own very soon!
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Nonia Pariente @npariente.bsky.social · 28/01/2026
The names of 72 female scientists will be added to the Eiffel Tower, to accompany those of 72 male scientists that are already engraved there tinyurl.com/e2satnyp 👏👩‍🔬 🧪
View of the lower arch of the Eiffel Tower
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Abby @arobertswrites.com · 26/12/2025
You can tell that LotR was written by an academic because Gandalf disappears for like 20 years doing research to answer a single question.
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Sarah Tuttle @niais.cryptoanarchy.network · 16/12/2025
Holy Potatoes.
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Erin Biba @erinbiba.bsky.social · 24/11/2025
I am SO FUCKING TIRED of having to ask this question constantly every single time a see an image. SO FUCKING TIRED
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qmbphysics.bsky.social @qmbphysics.bsky.social · 12/11/2025
Just a hint of pink on the skycam tonight in the northern direction.
Skycam image showing the evening sky with a pink hue on the right side, which corresponds to the northern direction.
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qmbphysics.bsky.social @qmbphysics.bsky.social · 11/11/2025
"Quantum Theory of Angular Momentum" by D. A. Varshalovich et al. This book is chock-full of useful identities, some that I haven't seen anywhere else. Recommended.
Cover page of book by D. A. Varshalovich et al. on "Quantum Theory of Angular Momentum".
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qmbphysics.bsky.social @qmbphysics.bsky.social · 10/11/2025
This evening's skycam view.
A dark blue patch of sky overhead.
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qmbphysics.bsky.social @qmbphysics.bsky.social · 07/11/2025
The skycam captured a helicopter flying overhead as the streak of light on the right.
Skycam image captured with 60 second exposure shows a line of light across a dark sky.
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Thomas Spooks 🎃👻💀 @thomasfuchs.at · 31/10/2025
Meme showing six logical operators illustrated with jack-o'-lantern images. 

trick OR treat 
trick AND treat 
trick XOR treat 
trick NOR treat 
trick NAND treat 
trick XNOR treat
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qmbphysics.bsky.social @qmbphysics.bsky.social · 24/10/2025
Just found out python supports operator overloading for user-defined objects. Well then *rubs hands*
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qmbphysics.bsky.social @qmbphysics.bsky.social · 23/09/2025
I want this thing so badly! source: x.com/EagleAlpha19...
Space 1999 Eagle transporter 36 inch toy model.
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qmbphysics.bsky.social @qmbphysics.bsky.social · 20/09/2025
Run!
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qmbphysics.bsky.social @qmbphysics.bsky.social · 18/09/2025
... Turns out breaking unitarity introduces noise into calculations, who woulda thunk it.
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qmbphysics.bsky.social @qmbphysics.bsky.social · 17/09/2025
Today's small victory after days of struggling with Racah algebra and incompatible definitions from different sources.
Mathematical derivation, ends with "QED !!! Finally!"
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Nuclear theory @arxiv-nucl-th.bsky.social · 16/09/2025
New paper: "Back and Forth with Akito Arima", link: arxiv.org/abs/2202.00093
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qmbphysics.bsky.social @qmbphysics.bsky.social · 16/09/2025
That's not the convergence behavior I was hoping for from my code. Needs more work...
Plot of energy as a function of iteration number, looks chaotic and trending up overall.
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qmbphysics.bsky.social @qmbphysics.bsky.social · 14/09/2025
New books have arrived!
Photo of 3 book covers: "Worlds Beyond Time: Sci-Fi Art of the 1970s" by Adam Rowe, "Engineering in Plain Sight: An Illustrated Field Guide to the Constructed Environment" by Grady Hillhouse, and "The Lessons of History" by Will and Ariel Durant
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qmbphysics.bsky.social @qmbphysics.bsky.social · 10/08/2025
Work in progress. Now the instructions say I have to insert that little pin at the bottom into a hole in the railing, but in order to do that I have to pull the whole thing apart and undo all the work I just did to make enough room to insert the pin. 🙄
Plastic model of spaceship engine block, showing part not fully inserted into place.
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qmbphysics.bsky.social @qmbphysics.bsky.social · 01/08/2025
Someone built a giant Lego version of the Agamemnon from Babylon 5 😮 www.youtube.com/watch?v=XJJm...
youtube.com
Huge LEGO Babylon 5 Earth Alliance Destroyer Agamemnon Spaceship
YouTube video by Beyond the Brick
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qmbphysics.bsky.social @qmbphysics.bsky.social · 30/07/2025
Sorry to hear that, I hope you feel better soon.
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qmbphysics.bsky.social @qmbphysics.bsky.social · 11/07/2025
I remember playing pong when it was still a novelty.
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qmbphysics.bsky.social @qmbphysics.bsky.social · 10/07/2025
I was going to use an old NUC pc I had lying around to do some light computations that don't need to be constantly supervised. Unfortunately, it looks like it just died on me. Time to look at other options, maybe an RPi5...
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qmbphysics.bsky.social @qmbphysics.bsky.social · 02/07/2025
3D printed for my hobby area, came out pretty nicely. Now working on another one to organize the million cables I have lying around.
3D printed wall peg board with attachments holding various tools.
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Ele Willoughby @minouette.bsky.social · 28/06/2025
Happy birthday to German-American theoretical #physicist Maria Goeppert Mayer (1906-1972), the 2nd woman to win the Nobel Prize for #physics. 🧪🐡👩🏼‍🔬 #histsci As the series of increasingly large atomic nuclei grows with additional nucleons (protons p & neutrons n) from hydrogen to transuranic elements 🧵
My linocut portrait of Maria Goeppert Mayer on 11” x 14” white Japanese paper shows the nuclear shell model energy states in lime green up the left side. Next to this are the magic numbers rising vertically (sums of available energy states): 2, 8, 20, 28, 50, 82, 126 and associated elements for nuclei with those numbers of protons: He, O, Ca, Ni, Sn, Pb with the final hypothetical element unlabelled, all in dark blue. A 3/4 portrait from the chest up in dark blue is all the right side. Mayer has short hair, and wears a dark blouse with long thin white scarf draped around her neck, untied. Below the magic numbers are increasingly large representations of nuclei with increasing numbers of gold and white nucleons like clumps of balls.
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Nuclear experiment @arxiv-nucl-ex.bsky.social · 03/06/2025
New paper: "Summary Report of the Physics Beyond Colliders Study at CERN", link: arxiv.org/abs/2505.00947
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qmbphysics.bsky.social @qmbphysics.bsky.social · 24/05/2025
I get my fair share of these on a regular basis, so watch out!
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qmbphysics.bsky.social @qmbphysics.bsky.social · 30/04/2025
And here are the star trails for it:
Star trails still picture
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qmbphysics.bsky.social @qmbphysics.bsky.social · 30/04/2025
Last night's skies.
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qmbphysics.bsky.social @qmbphysics.bsky.social · 29/04/2025
It was still pretty cloudy last night, but I did capture some star trails.
Star trails from last night.
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qmbphysics.bsky.social @qmbphysics.bsky.social · 25/04/2025
Star trails from my sky cam from a few nights ago, when the sky was relatively clear.
Image of star trails from my sky camera.
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qmbphysics.bsky.social @qmbphysics.bsky.social · 21/04/2025
Here is my first pass at the enclosure for the skycam. Because it's fairly well sealed (I even have some putty inside where the power cable comes in to keep out insects), I was a bit concerned about overheating. For now, it's just sitting outside while I monitor CPU temperatures, so no pics yet.
Enclosure for Raspberry Pi with transparent acrylic dome for the camera, placed on a small table outside.
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qmbphysics.bsky.social @qmbphysics.bsky.social · 18/04/2025
Will do! I'll be working on the enclosure next.
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qmbphysics.bsky.social @qmbphysics.bsky.social · 17/04/2025
Experimenting with the Fuzzy Skin setting in Cura as a way of hiding Z-seams and layer lines: it works really well. #3Dprinting
Two 3D printed cylinders: one with fuzzy skin and one without
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qmbphysics.bsky.social @qmbphysics.bsky.social · 15/04/2025
After 3 years of sitting in a corner unused, I'm surprised my old 3D printer still works pretty decently. The spools of filament that have been sitting in storage all that time are another story though. I'll need to run them through a dehydrator to see if I can salvage them.
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qmbphysics.bsky.social @qmbphysics.bsky.social · 13/04/2025
I've got my Raspberry Pi all set up to run as a skycam. Next comes the trickier bit: building an enclosure for it.
Raspberry Pi with HQ camera
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qmbphysics.bsky.social @qmbphysics.bsky.social · 11/04/2025
My patch of sky at dusk.
Sky at dusk
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qmbphysics.bsky.social @qmbphysics.bsky.social · 07/04/2025
The partly cloudy night sky overhead tonight. The bright light is the moon behind a tree, and the rightmost of the three pinpoints at the top is Mars.
Picture of the night sky with moon behind tree
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qmbphysics.bsky.social @qmbphysics.bsky.social · 03/04/2025
Just ordered parts to make my own sky cam and take pictures of the night sky. Let's see how far I get with this DIY project.
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qmbphysics.bsky.social @qmbphysics.bsky.social · 30/03/2025
Looks a little better with shading and reduced opacity.
Contour density plot of 6He nucleus
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qmbphysics.bsky.social @qmbphysics.bsky.social · 28/03/2025
Another day another email from Photobucket warning me that they will delete my inactive account soon unless I upgrade to their paid service. They've been sending me those emails for 3 years now.
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qmbphysics.bsky.social @qmbphysics.bsky.social · 26/03/2025
Work in progress: cutaway view of a contour plot of the calculated density distribution of nucleons inside a 6He nucleus. The plot still needs tweaking, but not bad.
3D contour plot of 6He structure
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qmbphysics.bsky.social @qmbphysics.bsky.social · 11/03/2025
Spotted today on the UC Berkeley campus.
A picture of a flowering tree with purple flowers
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Lego LabRat @legolaboratoryrat.bsky.social · 06/03/2025
I'm searching for people who love science and Lego to share and SUPPORT my Lego Ideas Periodic Table project so it can become an official Lego product Please consider sharing 🧪 #science SUPPORT here (it's free) ideas.lego.com/s/p:7ea5c858...
ideas.lego.com
The Periodic Table of the [LEGO] Elements
I am a chemist and an AFOL (Adult Fan of LEGO). This is the intersection of those two disciplines. But perhaps the intersection is more than just a ...
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Seamus Blackley @seamus.bsky.social · 01/03/2025
Once your faith, sir, persuades you to believe what your intelligence declares to be absurd, beware lest you likewise sacrifice your reason in the conduct of your life. In days gone by, there were people who said to us: "You believe in incomprehensible, contradictory and impossible things because we have commanded you to; now then, commit unjust acts because we likewise order you to do so." Nothing could be more convincing. Certainly anyone who has the power to make you believe absurdities has the power to make you commit injustices. If you do not use the intelligence with which God endowed your mind to resist believing impossibilities, you will not be able to use the sense of injustice which God planted in your heart to resist a command to do evil. Once a single faculty of your soul has been tyrannized, all the other faculties will submit to the same fate. This has been the cause of all the religious crimes that have flooded the earth.
Questions sur les miracles 1765
François-Marie Arouet "Voltaire"
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Papa Woof und Krampus und Bleaken @papawoof.bsky.social · 23/02/2025
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shauna @goldengateblond.bsky.social · 21/02/2025
looking back everything went to shit when Schoolhouse Rock stopped airing
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