Magic and Science Unite!
Sometimes magic and science work hand in hand as in this example of the vanishing water. This trick uses a super absorbent polymer. The polymer powder that was added to the cup acts like thousands of tiny sponges that expand when they get wet. The polymer can hold over 300 times its own weight in water. But the powder was not invented for magic tricks, it was invented for diapers! When super absorbent polymers are in use, no more leaky diapers.