Amazon.com description: Product Description: This series unpacks the basicbut also very complexfundamentals of physics and the universe. Each volume looks at the beginnings of discovery and casts a spotlight on the history behind a central topic in physics: quantum mechanics, gravity, relativity, and dark matter. Many ingenious scientists contributed to these breakthroughs, improving upon one anothers experiments and hypotheses to develop new theories. Concepts are described in an easily comprehensible and engaging manner and are supplemented by color photographs and helpful diagrams.