"This volume is a concise summary of topics which are expressed in extreme clarity and relative simplicity." Shlomo Hoory Director, Radiation Safety Mount Sinai Medical Center, New York "This book is one of the best physics books I have read for an overview on modern physics. It is so wonderfully arranged and compact that to find one thing you will not have to go through 5 chapters. Very coherent." Amazon.com This book originated from the need for a suitable student text for the course "An Introduction to Modern Physics" given at the Hebrew University of Jerusalem. This course is open to all students who have completed the standard first-year physics courses in mechanics, optics, electricity and magnetism. Its primary goal is to produce graduates who are - whatever their field of specialisation - "modern-physics-literate". The presentation of the course material emphasises the physical aspects of the phenomena.