#vortices

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Santiago Andrés Triana<a href="https://fediscience.org/tags/vortices" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#vortices</a> and capillary waves can be seen easily thanks to light refraction on the bottom of this quiet <a href="https://fediscience.org/tags/glacial" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#glacial</a> stream in the <a href="https://fediscience.org/tags/pyrenees" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#pyrenees</a>. <a href="https://fediscience.org/tags/fluiddynamics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#fluiddynamics</a> <a href="https://fediscience.org/tags/physics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#physics</a> <a href="https://fediscience.org/tags/science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#science</a>

Nicole SharpMassive black holes drag and warp the spacetime around them in extreme ways. Observing these effects firsthand is practically impossible, so physicists look for laboratory-sized analogs that behave similarly. Fluids offer one such avenue, since fluid dynamics mimics gravity if the fluid viscosity is low enough. To chase that near-zero viscosity, experimentalists turned to superfluid helium, a version of liquid helium near absolute zero that flows with virtually no viscosity. At these temperatures, vorticity in the helium shows up as quantized vortices. Normally, these tiny individual vortices repel one another, but a spinning propeller — much like the blades of a blender — draws tens of thousands of these vortices together into a giant quantum vortex. Here superfluid helium whirls in a quantum vortex. With that much concentrated vorticity, the team saw interactions between waves and the vortex surface that directly mirrored those seen in black holes. In particular, they detail bound states and <a href="https://en.wikipedia.org/wiki/Binary_black_hole#Ringdown" rel="nofollow noopener noreferrer" target="_blank">black-hole-like ringdown phenomena</a>. Now that the apparatus is up and running, they hope to delve deeper into the mechanics of their faux-black holes. (Image credit: L. Solidoro; research credit: <a href="https://doi.org/10.1038/s41586-024-07176-8" rel="nofollow noopener noreferrer" target="_blank">P. Švančara et al.</a>; via <a href="https://physicsworld.com/a/giant-quantum-tornado-behaves-like-a-black-hole-in-miniature/?utm_campaign=14290-57765&utm_content=Title%3A%20Giant%20quantum%20tornado%20behaves%20like%20a%20black%20hole%20in%20miniature%20-%20Editors_pick&utm_term=&utm_medium=email&utm_source=iop" rel="nofollow noopener noreferrer" target="_blank">Physics World</a>)<a href="https://fyfluiddynamics.com/2024/05/black-holes-in-a-blender/" class="" rel="nofollow noopener noreferrer" target="_blank">https://fyfluiddynamics.com/2024/05/black-holes-in-a-blender/</a><a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://fyfluiddynamics.com/tagged/astrophysics/" target="_blank">#astrophysics</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://fyfluiddynamics.com/tagged/black-hole/" target="_blank">#blackHole</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://fyfluiddynamics.com/tagged/fluid-dynamics/" target="_blank">#fluidDynamics</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://fyfluiddynamics.com/tagged/physics/" target="_blank">#physics</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://fyfluiddynamics.com/tagged/quantum-vortex/" target="_blank">#quantumVortex</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://fyfluiddynamics.com/tagged/science/" target="_blank">#science</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://fyfluiddynamics.com/tagged/superfluid/" target="_blank">#superfluid</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://fyfluiddynamics.com/tagged/superfluid-helium/" target="_blank">#superfluidHelium</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://fyfluiddynamics.com/tagged/vortices/" target="_blank">#vortices</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://fyfluiddynamics.com/tagged/vorticity/" target="_blank">#vorticity</a>

Eclectic Human<a href="https://zirk.us/tags/Dawn" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Dawn</a> begins to break in some far-flung <a href="https://zirk.us/tags/fractal" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#fractal</a> universe. Created in <a href="https://zirk.us/tags/Tierazon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Tierazon</a>. <a href="https://zirk.us/tags/Blue" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Blue</a> <a href="https://zirk.us/tags/Vortices" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Vortices</a> <a href="https://zirk.us/tags/Fractals" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Fractals</a> <a href="https://zirk.us/tags/FractalArt" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#FractalArt</a> <a href="https://zirk.us/tags/FractalArchive" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#FractalArchive</a>.

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