Theodor Kaluza was a German mathematician and physicist who is most famous for his Kaluza-Klein theory. This theory attempted to unify gravity and electromagnetism by proposing the existence of an extra dimension beyond the three spatial dimensions and one time dimension that we normally perceive.
He wrote several academic papers on mathematical and physics topics, including:
* "Zum Unitätsproblem der Physik" (On the Unification Problem of Physics), his seminal paper proposing the Kaluza-Klein theory.
* "Über die allgemeine Relativitätstheorie" (On the General Theory of Relativity), a paper on Einstein's theory of relativity.
* "Über die Quantisierung der Wellenfelder" (On the Quantization of Wave Fields), a paper on quantum field theory.
While he's known for his contributions to theoretical physics, he didn't write any novels or popular science books.