Kox became a professor by special appointment at the UvA in 1998 through the Pieter Zeeman chair. His work covers many aspects of the history of physics of the past century, in particular related to Hendrik Antoon Lorentz and Albert Einstein.

Academia Europaea

The Academia Europaea is a European Academy of Humanities, Letters and Sciences. Among its members are seventy-two Nobel Laureates. Membership is by invitation, made after peer group nomination, scrutiny and confirmation as to the scholarship and eminence of the individual in their chosen field. With the election of Kox, the Physics and Engineering section of Adademia Europaea now has fourteen members from the Netherlands.