In this short book Einstein explains, using the minimum of mathematical terms, the basic ideas and principles of the theory which has shaped the world we live in today.

This book contains the great physicist's own explanation of both the special and general theories of relativity.

Comprehensive coverage of special theory (frames of reference, Lorentz transformation, more), general theory (principle of equivalence, more) and unified theory (Weyl's gauge-invariant geometry, more.) Foreword by Albert Einstein.

Through thought experiments and mathematical derivations, Einstein presents a comprehensive overview of his theories, making this work a cornerstone in the field of theoretical physics.

Nobel Laureate's brilliant early treatise on Einstein's theory consists of his original 1921 text plus retrospective comments 35 years later. Concise and comprehensive, it pays special attention to unified field theories.

Jacquelyn Mitchard, whose powerful, emotionally rich novels have won resounding critical acclaim and a wide, enthusiastic audience worldwide, brings us a soaring, heartbreaking, and unforgettable tale of love and the bonds that unite us all ...

In this collection of his seven most important essays on physics, Einstein guides his reader step-by-step through the many layers of scientific theory that formed a starting point for his discoveries.

Updated throughout, the book contains more detailed explanations and extended discussions of several conceptual points, and strengthened mathematical deductions where required.