Theodore Gray is the author of The Elements, Molecules, and Reactions, as well as Theodore Gray' s Completely Mad Science, How Things Work, Engines, and the forthcoming Tools. He is the creator of the bestselling iPad apps " Elements" and " Molecules, " which have both been named " App of the Week" by Apple and was Director of " Disney Animated" (also honored by Apple as " iPad App of the Year"). Gray appeared on stage with Steve Jobs several times in his capacity as a software creator. He also co-founded Wolfram Research, Inc. , makers of the widely-used software Mathematica and the Wolfram Alpha website. He lives in Urbana, Illinois.
Nick Mann is a photographer specializing in taking beautiful photos of inanimate objects on black backgrounds. His other work includes Molecules, , Reactions, How Things Work, Engines, and the forthcoming Tools, all written by Theodore Gray. In his other life, he works in the quality and manufacturing department for a small scientific imaging company. He lives with his wife, children, and stepson in Urbana, Illinois.