‎"KAMPEN, N. G.‎
‎Contribution to the quantum theory of light scattering.‎

‎København, Ejnar Munksgaard, 1951. 8vo. In the original printed wrappers. Offprint from ""Det Kongelige Danske Videnskabernes Selskab"", bind, 26, nr. 15. Very fine and clean. 77 pp.‎

Reference : 51304

‎Offprint of Kampen's dissertation in which he showed how to deal with singularities in quantum mechanical scattering processes, which was an important step in the development of renormalization, according to Kramers.During his Ph.D. studies he spent a year at Niels Bohr's institute in Copenhagen, and in 1952 he graduated cum laude at the university of Leyden.‎