'Two walkers’ interaction leads to orbiting' by Naresh Sampara (University of Nottingham)
Duration: 39 secs
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| Description: | (WINNER) A millimetre-sized oil droplet can bounce on a vertically-vibrated liquid bath for an unlimited time. It may couple to the surface wave it emits, leading to horizontal self-propulsion as an object called a walker. Here, two walkers interact and orbit each other. |
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| Created: | 2020-11-03 17:19 |
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| Collection: | UKFN Video Competition #9 |
| Publisher: | University of Cambridge |
| Copyright: | Dr Naresh Sampara |
| Language: | eng (English) |
| Abstract: | A walker is a dual macroscopic object that consists of a bouncing droplet coupled to a local Faraday wave on a vibrated bath. If the bath is unconfined, a single walker will move horizontally in a straight line at constant speed. When a second walker is sufficiently close to the first walker, they interact through their waves, and the interaction leads to three main trajectory outputs: orbits, promenades and scattering. Orbits are usually circular trajectories, where the walkers orbit around their centre of mass. The orbiting of two walkers in side and top views is presented. |
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