Uploaded February 2015 | Updated September 2026, 2 weeks ago
The surface tension of water and the evaporation of ethanol produce an interesting effect in a wineglass known as "tears" or "legs". The process is caused by the Marangoni effect, which explains how toy soap boats work among other interesting things.
The surface tension of water and the evaporation of ethanol produce an interesting effect in a wineglass known as "tears" or "legs". The process is caused by the Marangoni effect, which explains how toy soap boats work among other interesting things.
