Theory of Knowledge (TOK) is about how to think, not what to think. In Knowledge According to My Gardener, author Ayman Al Zanoun offers fifty stories and crossword puzzles to bring TOK conversations to life and to add a sense of entertainment to learning....

Although three-phase electric machines play a great role in almost all industrial applications, they still have limitations to cover high power requirements needed for traction, propulsion and other high power applications. Nowadays, multiphase electric machines with high output power can solve this problem....