Coming from a background of knowing very little about Physics in general, apart from the surface level and a little about it's relationship to computer science, I found this a fascinating read. I particuarly enjoyed the first half of the book, where Gribbin explains about how quantum theory was introduced to the scientific world in the early 1900s, and then discusses it's real world applications. It gets a bit heavy going at times and I found it tough to read on the tube sometimes, but it's a great book for diving in to the quantum world without it feeling like a text book.