In 1931, Bhabha held the Salomons studentship in engineering. In 1932, on a Rouse Ball travelling studentship, he visited Copenhagen, Zurich and Utretcht. Niels Bohr 's institute at Copenhagen was a major hub of theoretical physics research. At Zurich, Bhabha wrote his first paper in July 1933 with Wolfgang Pauli, which was published in the Zeitschrift fur physik in October 1933. During his studentship, Bhabha also visited Hans Kramers, who was then a professor conducting theoretical research in the interaction of electromagnetic waves with matter at Utrecht University. In 1933, Bhabha was selected for the Isaac Newton scholarship, which he held for the next three years and used to fund his time working with Enrico Fermi at the Institute of Physics in Rome. The same year, Bhabha published his first paper on the role of electron showers in absorbing gamma radiation.