Here’s an easy trick to make glass totally invisible

Even when you are only seeing one exam tube vanish into this beaker , there are another two more inside . In fact , there ’s also a beaker hidden inside , completely unseeable to the eye . How is this black art possible ? SCIENCE .

It ’s a clever trick to try at house for those of you who never took interpersonal chemistry classes : Get a glass recipient , sate it with glycerol or vegetable oil instead of water , and put a piece of hearty shabu or another recipient full of glycerol within . It will go away instantly , powerful before your heart .

The account is childlike : Glycerol has a deflective indicant very standardized to glass . Light does n’t change its speed run from glass to glycerol , there ’s no refraction and the ice becomes “ unseeable . ”