Uploaded August 2014 | Updated September 2026, 1 week ago
An inorganic precipitation reaction is carried out by injection of sodium sulfide into iron(II) solution. The reactant concentrations are not high enough to form a tube but rather create millions of individual particles that visualize a fluid plume. The plume itself is associated with the injection process.
An inorganic precipitation reaction is carried out by injection of sodium sulfide into iron(II) solution. The reactant concentrations are not high enough to form a tube but rather create millions of individual particles that visualize a fluid plume. The plume itself is associated with the injection process.





![Dancing Drop - Magic Disappearance Act 4
A dissolving (and evaporating) drop of dichloromethane floating on water containing a surfactant ([CTAB]=10mM). There is NO external intervention; this is spontaneous, selforganized motion! The viewed area is approx. 1 inch wide and the movie plays close to real time.
Reference: http://onlinelibrary.wiley.com/doi/10.1002/anie.201104261/abstract
(V. Pimienta et al. Angew. Chem. Int. Ed. 50, 10728 10731, 2011). Dancing Drop - Magic Disappearance Act 4](https://i.ytimg.com/vi/Ti1lIMnqDeA/mqdefault.jpg)




