Visualise the power of phi.
Material scientists at the Lawrence Berkeley National Laboratory have developed a technique to print three-dimensional structures made entirely of liquids. Using a modified 3-D printer, they inject streams of surfactant-sheathed water into silicone oil to form tubes of liquid within another liquid. The threads of water have been printed with diameters ranging between 10µm to 1mm with a variety of spiralling and branching structures. The researchers hope to use the technique to construct liquid electronics, perform molecular separation, or precisely deliver components to more complex structures.
Journal Article: https://doi.org/10.1002/adma.201707603 (Advanced Materials)
A GIF that reminds me of one of my favourite stations to and from work, Euston Square, near two other stations. Its a often frenetic mess of passengers and trains from three different Tube lines all competing for space and coming in and out in rapid succession. However, if you really want to see busy, try Vcitoria or Liverpool Street stations.
Credits: palerlotus and Giphy