Davis B. The Basic Physics of Quantum Theory 2020

Textbook in PDF format

This book is an introductory course on quantum theory accessible to anyone who is interested in obtaining an insider's knowledge of the subject, but who may not have studied physics at the college level. No mathematics is required beyond middle school algebra. Exercises are provided throughout the book, with answers at the back. This book can be used for self-study or as a textbook in an undergraduate or high school curriculum.
Introduction
Newtonian Physics
Statistical Mechanics
The Concept of a Field
The Ultraviolet Catastrophe
Absorption and Emission of Radiation
Matter Waves
The Special Theory of Relativity
The Geometry of Space and Time
The Heart of Quantum Theory
Angular Momentum and Spin
Quantum Theory and Relativity
Tunneling: Quantum Magic?
The Spatial Wave Function
Conclusion