This book is a concept-focused, informal introduction to the field of physics that can be enjoyed without any prior knowledge. Step by step and using many examples and illustrations, the most important quantities in physics are gently explained. From length and mass, over energy and power, all the way to voltage and magnetic flux. The mathematics in the book is strictly limited to basic high school algebra to allow anyone to get in and to assure that the focus always remains on the core physical concepts.

From the author of "The Book of Forces", "Introduction to Stars: Spectra, Formation, Evolution, Collapse" and the series "Great Formulas Explained".