Not everyone is a materials expert, so when someone asks the question “What happens when metal X touches metal Y?”, you don’t have to feel bad when you don’t know the answer. Except when it comes to gallium and aluminium, in which case you’ll sound like some sort of SCIENCE…
Two researchers from a Beijing University have found a way to create 3D X-Ray images of some of the smallest blood vessels in the heart — by filling it with liquid metal.