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#MilevaMaric, nata 150 anni fa, non fu soltanto la moglie di #AlbertEinstein.


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    Quantum Rayleigh-Taylor InstabilityThe Rayleigh-Taylor instability–typically marked by mushroom-shaped plumes–occurs when a dense fluid accelerates into a less dense one. But researchers have now demonstrated the effect at quantum scales, too.For their experiment, the group used a Bose-Einstein condensate of sodium atoms and made the interface between them by exciting half of the atoms into a spin-up state and half into a spin-down one. With the interface is place, they reversed the magnetic field gradient, inducing a force on the atoms equivalent to the buoyant force seen in conventional Rayleigh-Taylor instabilities. As shown above, the interface first warped, then developed Rayleigh-Taylor mushrooms and eventually became turbulent. (Image and research credit: Y. Geng et al.; via Physics World)#fluidDynamics #instability #physics #quantumMechanics #RayleighTaylorInstability #science #turbulence
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    Beware mass! 😄 📷 :https://imgur.com/gallery/physics-meme-dump-response-to-biology-dump-on-fp-8OPLju1#cooking #physics #astrodon #science #humor #meme #baking
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    È divertentissimo leggere E.T. Jaynes, in particolare i suoi ultimi lavori. Questo passaggio è da "The Gibbs Paradox". Si può scaricare qui.There is a school of thought which militantly rejects all attempts to point out the close relation between entropy and information, claiming that such considerations have nothing to do with energy; or even that they would make entropy subjective and it could therefore have nothing to do with experimental facts at all. We would observe, however, that the number of fish that you can catch is an objective experimental fact; yet it depends on how much subjective information you have about the behavior of fish.Traduzione in italiano:Esiste una corrente di pensiero che respinge con forza ogni tentativo di evidenziare la stretta relazione tra entropia e informazione, sostenendo che tali considerazioni non abbiano nulla a che fare con l’energia; o persino che renderebbero l’entropia soggettiva, e che quindi non potrebbe avere alcun legame con i fatti sperimentali. Osserviamo, tuttavia, che il numero di pesci che si possono catturare è un fatto sperimentale oggettivo; eppure dipende da quanta informazione soggettiva si possiede sul comportamento dei pesci.#SecondLaw #SecondaLegge #Jaynes #Entropy #Fisica #Termodinamica #Thermodynamics@fisica @scienze
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    Dinosaurs? Okay ... In Britain?? How would they even get on the Chunnel Train?https://www.bbc.co.uk/news/resources/idt-5f8c77b0-92bc-40f2-bf21-6793abbe5ffe #science #biology #physics #chemistry #technology #education #space #engineering