Let's say you want to test a huge camera - the exotic 3.2 gigapixel camera that will go into the Vera Rubin Observatory in Chile. What to use?.. It turns out they used broccoli.
I can't decide if this is a tip of the hat to a movie franchise or Benoit Mandelbrot.
Authors: Benjamin Apffel, Filip Novkoski1,† 2 1,*, Antonin Eddi , Emmanuel Fort
Abstract: When placed upside down a liquid surface is known to destabilize above a certain size. However, vertical shaking can have a dynamical stabilizing effect. These oscillations can also make air bubbles sink in the liquid when created below a given depth. Here, we use these effects to levitate large volumes of liquid above an air layer. The loaded air layer acts as a spring-mass oscillator which resonantly amplifies the shaking amplitude of the bath. We achieve stabilization of half a liter of liquid with up to 20 cm width. We further show that the dynamic stabilization creates a symmetric Archimedes’ principle on the lower interface as if gravity was inverted. Hence, immersed bodies can float upside down under the levitated liquid.
the best speech
On stuttering and Brayden. (via The Atlantic)
05:40 in General Commentary, just cool | Permalink | Comments (0)