An even more important insight was Wilson's answer to the question: "What is quantum field theory?" Kenneth Wilson developed the philosophy and techniques of renormalization group.
Wilson's expertise during the first Bush presidency by asking him to inspect and estimate the age of each window, his wife said.
Wilson's interest in glass from the Colonial era onward was sparked when he was assigned to design a display at Old Sturbridge Village in Massachusetts 50 years ago.
Wilson also received the Purple Heart after nearly dying from machine-gun fire while serving with the US Army in Germany in World War II.