Cup That Holds Water but Can’t Hold Mercury Interesting look at a lead cup that can old water but is porous to mercury. This reminds me of the Superfluid Helium: Facebook Prev Article Next Article Experiments Checkout these cool gadgets... Related Posts Japanese Develop Method To Visualize A Person’s Dream Two Vortex Rings Colliding Laminar Flow Nozzle Is Cool To Watch Measuring People’s Reaction Time With a Ruler and High Speed Camera Alkali Metals Reacting with Water Physicist Andreas Wahl puts his life on the line in this experiment