This book presents the readers with all the essential aspects associated with the phenomenon of microwave heating. Microwave heating has numerous applications ranging from the microwave ovens in kitchen for heating food, to a sterilization setup for medical treatment, to processing of materials in the distinct fields. This phenomenon holds considerable benefits over the conventional techniques in the aspects of less processing time and reduced environmental impacts as reflected through those applications. This book covers both the general understandings as well as advance applications of microwave heating. The book contains discussions and information on the application of this technique in the areas of chemical engineering, forestry, food, mineral processing industry and agriculture in order to provide a base for future research. The aim of this book is to serve as an elementary reference source to help the readers focus on important aspects behind the success of microwave heating.