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 Can Paper Cut Wood? Ball Thrown 100 km/h From A Truck Moving 100 km/h Buoyancy Quiz Experiment Another Non-Newtonian Liquid Experiment Mind-Blowing Programmable Magnets Anti-Gravity Wheel? Cool Gyro Demonstration