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 Coke + Mentos Powered Car Travels 73 Meters How Much Does a Falling Magnet Weigh? Mars500 – The Simulated Mars Mission On Earth How a Crookes Radiometer Works How to Survive a Grenade Blast 7 Most Bizarre Experiments Of All Time