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 Extreme Neodymium Magnet Mercury Bottle Flip A substance so sensitive it immediately explodes on the lightest touch This Is What Happens When You Dissolve an Antacid On the Space Station Anti-Gravity Wheel? Cool Gyro Demonstration Copper’s Surprising Reaction to Strong Magnets