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 Ever Seen a Liquid Simultaneously Freeze and Boil? Crushing a Car with the Domino Effect Stacked Ball Drop Experiment Levitate a Screwdriver with Compressed Air! A red hot nickel ball placed on floral foam Goldfish Frozen In Liquid Nitrogen and Then Revived!