TIL: Conservation of energy is a simplification. On a cosmological scale, energy is _not_ conserved.

https://www.youtube.com/watch?v=lcjdwSY2AzM (28 min)

#Matter #Science #Physics #LawsOfPhysics #VideoGameLogic #GameLogic #GamingLogic #MinecraftLogics.

Merging stars: For the first time, researchers have observed the fusion of star clusters in dwarf galaxies — a discovery made by chance through observations from the #Hubble space telescope.

Read more in our news article or check out the original study in #Nature:

https://www.uibk.ac.at/en/newsroom/2025/celestial-spectacle-witnessed/

https://www.nature.com/articles/s41586-025-08783-9

Something to get you thinking and distract your mind from current events. Mind bending.

You probably have never heard of Emmy Noether, which is a shame.

https://www.youtube.com/watch?v=lcjdwSY2AzM

Another video of #Teskooano - my 3D N-Body simulator made with #threeJS - another video of the new #dockview UI and multi-camera view of simulations. #gamedev #procgen #astronomy #physics

https://www.youtube.com/watch?v=rpjPHrzt3qU

January 1928: The Dirac equation unifies quantum mechanics and special relativity

A seminal paper by Paul Dirac, who relied on mathematical intuition, laid the foundation for quantum electrodynamics.

By Nyla Husain (from the archives)

https://www.aps.org/apsnews/2024/11/mathematical-intuition-dirac-quantum-mechanics

A magnificent Photography composition of the Cosmos superbly captured

Mars between Nebulas

#NASA #space #Cosmos #Photography #Physics #Chemistry

https://apod.nasa.gov/apod/ap180327.html

Happy #QuantumDay, everyone! Discovering #quantumtheory revolutionized #physics forever - and might even make your hair stand on end! #MaxPlanck

#paperday Want to start the week with a fresh paper which clearly thinks outside of the box?

Here you go

https://arxiv.org/abs/2504.08461

"Astrophysical constraints on the simulation hypothesis for this Universe: why it is (nearly) impossible that we live in a simulation"

Will do a paper explainer in the near future...

In January this year Asteroid 2024 YR4 had an impact probability of almost 3.5 %. Don't worry: now it is like 0.

How does the asteroid revolve around the Sun? Let's figure it out: #space #science #physics #sandbox

https://youtu.be/YaKupzLA848

Magnetic field of a cow.

(Simulated magnetic field of a kitchen magnet sized and magnetized cow model)

Available now in Ionsolver: https://github.com/VioletSpace/IonSolver
#physics #gpu #hpc

The visceral reaction I had to the "Ambush in the Oval Office" and my sustained search for understanding has led me to recall a 1979 discussion with a friend who eventually became a professor in Sociology. I do recall Weber and his writings on Power and Politics. Science does not operate in a vacuum. The exercise of power is all around us. I briefly held a postion in student politics back then. "Everything is politics" was a claim made by one of my committee members.

This book is on the impossibly long list of "distractions" https://www.cambridge.org/highereducation/books/weber-political-writings/9E3059E0DE390B4541EF896954100A20#overview

#phdlife #physics #mentalhealth

[I am addressing "visceral reactions" with my current mh program]

Wohlan, Ihr Hexen und Werwölfe: Meton sagt, heute Nacht ist Vollmond.

https://www.thomasweibel.ch/meton/

Imagine meeting a time traveller for a few minutes. As they are leaving, you get a glimpse of the destination set in her time machine - it is the very moment she arrived.

Where did she come from?

What do you think? I played with this idea in a new blog post.

Stylonychia (microorganism) creating a water vortex using its cilia. Tommy Gunn, Jesse Gunn. New York, New York, USA. Darkfield Magnification 10x. https://www.nikonsmallworld.com/people/tommy-gunn
#science #ecology #physics #biology #microscopic #Reels

Turns out the persuit for better beer has pushed analytic chemistry and optical instrumentation. Brewers and beer appreciators are responsible for both refractometry and colloquine. I wrote a blogpost about it

https://caffeineandlasers.com/blogs/beerAndOptics.html