Mercury (also known by the symbol: Hg) is a deadly poison, and may be best known for turning hat-makers mad in ‘ye olde’ England and giving autism to people who eat too much fish. It also happens to be liquid at room temperature, which is a pretty neat property for a heavy metal – almost all other metals are usually quite solid.
In this mesmerizing video below, watch sound waves pass through a pool of mercury, vibrating its surface, and creating a shiny quivering wave-blob of epic proportions.