This extremely successful book/disk package helps students to quickly dispel the mystery behind the complex concepts involved in quantum mechanics. With more than 200 problems, it provides readers with practical experiences in using such hard-to-visualise concepts as complex amplitudes, eigenvalues, and scattering cross sections. The graphically powerful programmes are very user-friendly and fascinating to manipulate. Based on the interactive program Interquanta, they make extensive use of 3-D graphics to guide students through computer experiments in the quantum mechanics of free particle motion, bound states and scattering, tunnelling, two-particle interactions, and much more besides. The diskette contains two versions of the programs, one for use in computers with a mathematical coprocessor, the other optimised for machines without. For this new edition the software has been reprogrammed to fully exploit the Macintosh environment.