This book explains how the ideas of quantum physics were discovered by the mathematicians and physicists involved. Even though quantum physics became one of the most successful of scientific theories, explaining how much of our world works, its strange implications for humankind's relationship with the universe still disturb many scientists. This book discusses the science and the history of an unfolding quantum description of our world through the use of colourful diagrams, photographs and, where necessary, a text carefully written to explain some of the significant mathematical ideas in easy to follow steps.