#physics

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Boosted by Charlie Stross @cstross@wandering.shop
@admin@fyfluiddynamics.com · 4d ago
Richtmyer-Meshkov Instability If you send a shock wave through a magnetized plasma–something that happens in both supernova explosions and inertial confinement fusion–it can trigger an instability known as the Richtmyer-Meshkov instability. The image above shows a form of this, taken from a simulation. Rather than treating the plasma as a single idealized fluid, the researchers represented it as two fluids: an ion fluid and an electron fluid. This allowed them to better capture what happens when certain components of the plasma react to changes faster than others do. The image itself shows the electron number density across the fluid, where darker colors represent higher electron number density. The interface between high and low-densities shows a roll-up instability that resembles the Kelvin-Helmholtz instability, but there are also regions of mushroom-like plumes that more closely resemble Rayleigh-Taylor instabilities. The authors note that these structures don’t appear in simulations that represent a plasma as a single fluid; you need the two-fluid representation to see them. (Image and research credit: O. Thompson et al.) #CFD #computationalFluidDynamics #fluidDynamics #instability #KelvinHelmholtzInstability #magnetohydrodynamics #numericalSimulation #physics #plasma #RayleighTaylorInstability #RichtmyerMeshkovInstability #science #shockwave
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@AcademicEurope@mstdn.business · 3d ago
Job Alert Research Assistant (m/f/d) – Professorship for Hydromechancics Deadline: 2026-04-12  Location: Germany - Hamburg   https://www.academiceurope.com/ads/research-assistant-m-f-d-professorship-for-hydromechancics/ #hiring #Hydromechanics #ResearchAssistant #civilengineering #STEM #geoscience #physics
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@brainsmatter@mastodonapp.uk · 6d ago
Astrophysicists trace the origin of valuable metals in space, from colliding stars to merging galaxies https://theconversation.com/astrophysicists-trace-the-origin-of-valuable-metals-in-space-from-colliding-stars-to-merging-galaxies-272328 #astronomy #physics #science #STEM
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@hbrpgm@adalta.social · Mar 09, 2026
📺 https://peer.adalta.social/w/a1XNecDTPWq1Dsja11Tr93 🔗 [🇩🇪🇺🇸🇫🇷](https://p4u.xyz/ID_GVIHMBIV/1) 🔗 [ℹ️](https://journals.aps.org/prl/abstract/10.1103/y4y1-1ll6") Une percée théorique contourne le théorème de l'interdiction de la copie quantique via un chiffrement à usage unique, ouvrant la voie à des applications pratiques inédites. #physics #quantumcomputing #quantumphysics #academicmastodon #qubits
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@hbrpgm@adalta.social · Mar 09, 2026
📺 https://peer.adalta.social/w/sn4VUbCuzMaS2GztQZDdCo 🔗 [🇩🇪🇺🇸🇫🇷](https://p4u.xyz/ID_GVIHMBIV/1) 🔗 [ℹ️](https://journals.aps.org/prl/abstract/10.1103/y4y1-1ll6") A novel protocol creates multiple encrypted qubit copies, preserving the no-cloning theorem through single-use decryption keys. #physics #quantumcomputing #quantumphysics #academicmastodon #qubits
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@hbrpgm@adalta.social · Mar 09, 2026
📺 https://peer.adalta.social/w/cpUdnEgHiLnW7bs3Sf4PLx 🔗 [🇩🇪🇺🇸🇫🇷](https://p4u.xyz/ID_GVIHMBIV/1) 🔗 [ℹ️](https://journals.aps.org/prl/abstract/10.1103/y4y1-1ll6") Eine neue Methode ermöglicht die effektive Vervielfältigung von Qubits durch einmalige Quantenverschlüsselung, was die Grundlagen der Quanteninformationsverarbeitung herausfordert. #physics #quantumcomputing #quantumphysics #academicmastodon #qubits
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@AcademicEurope@mstdn.business · Mar 09, 2026
Job alert Team Lead Position “Data Curation Unit” in Helmholtz Imaging Deadline: 2026-03-27  Location: Germany - Heidelberg   https://www.academiceurope.com/ads/team-lead-position-data-curation-unit-in-helmholtz-imaging/ #hiring #AI #MedicalImaging #DataScience #MachineLearning #CancerResearch #ResearchJobs #mathematics #physics #computerscience
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@virtuous_sloth@cosocial.ca · Mar 07, 2026
"He has the top-3 fastest hands in the world..." #discgolf #physics #smartereveryday https://www.youtube.com/watch?v=-0JKHuzJ67A
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@AcademicEurope@mstdn.business · Mar 06, 2026
Job Alert University professor (W3 without management function) (f/m/x) for electromagnetic quantum sensors Deadline: 2026-04-07 Location: Germany - Ulm https://www.academiceurope.com/ads/university-professor-w3-without-management-function-f-m-x-for-electromagnetic-quantum-sensors/ #hiring #professor #headofdepartment #electricalengineering #physics #quantumtechnology #quantumsensors
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Boosted by isaiah @isaiah@mastodon.social
@cobalt123@beige.party · Mar 05, 2026
Physics Girl! New video so amazing. I really missed her. Long Covid has not gotten the best of her! This journey is so painstakingly Priceless. #PhysicsGirl #DianaCowern #Physics #Neutrinos #Celebrate #Science https://youtu.be/B3m3AMRlYfc
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@zenartcenter@universeodon.com · Mar 05, 2026
Where does sound actually happen? Waves move through the air — but sound only exists when a mind experiences them. This short looks at the strange relationship between physics, perception, and consciousness. ▶️ Watch → https://youtube.com/shorts/13Ko_IPhY2M #Zen #Consciousness #Perception #Awareness #Physics #Meditation
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@brainsmatter@mastodonapp.uk · Mar 05, 2026
World’s biggest #astronomy camera seeks to answer pressing questions about the universe https://theconversation.com/worlds-biggest-astronomy-camera-seeks-to-answer-pressing-questions-about-the-universe-277017 #physics #science #STEM
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@JdeBP@mastodonapp.uk · Feb 28, 2026
@jmax@mastodon.social You are likely going to regret that. (-: When discussing the energy–momentum relation, mass *is* by convention rest mass, as the usual formulation E^2=m^2×c^4+(p×c)^2 is in terms of rest mass m. The relation says that energy does not imply mass when m=0. Energy implies the momentum portion of the sum, which photons have, defined as p=h/λ. With m=0 the full form reduces to E^2=(p×c)^2 which after substitution for photon momentum becomes E=c×h/λ=h×f . But this does not become a statement about mass. It's fallacious to then substitute E=m×c^2 and solve for m to get m=h×f/c^2 . E=m×c^2 is a different reduced case for massive stationary objects (m>0, p=0), neither of which is the case for photons. Furthermore, the maths yields divergent γ=∞ Taylor series sums when u=c so thinking of K.E. terms for photons is aphysical. Energy-mass equivalence is a special form for the case of m>0, γ≠∞. Energy does not imply mass in the general case. @cstross@wandering.shop #physics #relativity
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@HollyCo26588808@universeodon.com · Feb 26, 2026
Here on Earth, notions like "where" and "when" are easy to practically define and use. But in space, particularly at cosmic distances, Einstein gives us a whole lot more to think about https://bigthink.com/starts-with-a-bang/einstein-revolutionized-where-when/?utm_source=fark&utm_medium=website&utm_content=link&utm_campaign=fark&ICID=ref_fark #stem #science #space #physics #astrophysics #interesting
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@maxelcat@universeodon.com · Feb 25, 2026
Here's a short i made about the importance of the #photoelectric effect and how to avoid the traps in answering #alevelphysics #physics questions
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@maxelcat@universeodon.com · Feb 25, 2026
My dad took me to the pub after our walk. I will just sit here looking cute while he sips a drink and talks about #physics #Dogs #dogsofmastodon
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@AcademicEurope@mstdn.business · Feb 24, 2026
Job Alert Senior Research Engineer – Nitride Thin-Film Materials (Wide Band Gap) Deadline: open until filled Location: Austria - Villach https://www.academiceurope.com/ads/senior-research-engineer-nitride-thin-film-materials-wide-band-gap-job-id231-0/ #hiring #SeniorResearchEngineer #MaterialsScience #ThinFilms #physics #materialsscience #Microelectronics
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@HollyCo26588808@universeodon.com · Feb 24, 2026
The idea of what's fundamental has evolved: from primeval elements to atoms to subatomic particles and, finally, to the standard model. Nevertheless, there's still a long way to go https://bigthink.com/starts-with-a-bang/fundamental-evolved-over-time/?utm_source=fark&utm_medium=website&utm_content=link&utm_campaign=fark&ICID=ref_fark #stem #science #space #physics #particlephysics #interesting
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@kat@is.burntout.org · Feb 20, 2026
Sometimes when reading mathematical physics I struggle to understand if it's a physics thing - 'ignore quadratic and higher terms' or 'it all just disappears at infinity' ... Or a math thing which is more like "let's add and subtract some term giving zeros because it helps simplifying stuff" #physics #maths
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@WestportObservatory@vmst.io · Feb 17, 2026
Live at the Westport Observatory Tonight – 2/17! We’re welcoming Columbia University astrophysicist Yue Yu to the WAS classroom for a deep dive into frontier physics and the big questions still haunting the universe. Dark matter, next-gen experiments, and the kind of science that keeps theorists up at night. 👉 https://was-ct.org/events/yue-yu/ #Astronomy #SpaceScience #WAS #WestportObservatory #WestportAstronomicalSociety #ScienceLecture #DarkMatter #Physics #Columbia #IAXO
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