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 Science Can Make Anything Unbreakable Aerogel and how it reacts with water How Much Paper Does it Take to Stop a 50cal Crushing $40,000 GOLD BAR with Big Hydraulic Press Watch As This Mysterious Goo Is Sliced, Shot and Pummlled to Test Its Properties! Hair dryers are magical instruments that make paper planes fly forever