The questions multiply. What is electricity, what is matter? We have split the atom, and within its confines discovered new worlds. Do we know what they are, have we understood the building blocks of the universe and where they originate? Have we grasped the secret of magnetism—that marvelous entity by which proton and electron keep each other in balance through positive and negative electricity, the force that holds the atom in check and so keeps the universe from falling apart? What really are