What do Newton's falling apple and the moon's orbit have in common? How does relativity theory apply to everyday life, what's a quantum leap, and why is Schrödinger's cat inside that box? The answers lie within your grasp! John Gribbin, a physicist and author of bestselling popular-science books, offers down-to-earth discussions of technical topics. Playful engravings and cartoons illustrate his imaginative accounts of the workings of string theory, black holes, superfluidity, and other cosmic oddities. Readers of all ages will appreciate these memorable explanations of the laws of physics and their application to everything from massive stars to miniscule atoms.