Errata
In the 1999 1st paperback edition of the The Elegant Universe: Superstrings, Hidden Dimensions, and the Quest for the Ultimate Theory, the Kaluza–Klein theory and the suggestion that the universe might have more than three spatial dimensions is incorrectly attributed to a Polish mathematician named Theodor Kaluza in 1919 on p.185. However, Theodor Kaluza was born in Wilhelmstal, a town in Silesia. At the time of Kaluza's birth, Silesia was part of the German Empire. The region only became part of Poland in 1945, after the annexation of all of former German territory east of the Oder–Neisse line, which was only recognised by West Germany in 1970.
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