I am Senior Researcher (Investigator Principal) at Centro Interuniversitário de História das Ciências e da Tecnologia [Interuniversity Center for the History of Science and Technology], CIUHCT, at the University of Lisbon, and I am head of the Departamento de História e Filosofia das Ciências [Department for the History an Philosophy of Science], at the Faculty of Sciences, University of Lisbon.

I am mostly interested in the history of exact sciences in the 15th to 17th centuries (mathematics, astronomy, navigation science, physics, etc.), with a special, but not exclusive, focus on Portugal. My main project in the past years has been the edition of the complete works of the Portuguese mathematician and cosmographer Pedro Nunes (1502-1578), but I have worked in other subjects. Recently, with a colleague (Bernardo Mota), we edited and translated the mathematical works of Francisco de Melo, another 16th century Portuguese mathematician. Also with a colleague (Joaquim Alves Gaspar) I have been doing some work in the history of cartography, with very interesting results. I did some research in the history of libraries, the practice of science in Jesuit colleges, and other topics.

I have a special fondness for textual work but I have also engaged in broader topics such as history of the book and history of education. I was originally trained as a theoretical physicist (PhD, 1998), but studied many other things besides physics and slowly drifted to the history of science. I am a full time historian of science since 2002. I published (or edited) some twenty books and a good number of papers. I supervised the research of quite a few students and I am involved in various Projects. I was also the curator of several Exhibitions on history of science.

Besides my personal research I have worked to establish a solid institutional base for the study of history of science in Portugal. In 2003 I was one of the founders of the Center for the History of Science at the University of Lisbon, and one of the founders of the Master program in the History and Philosophy of Science. In the past years I have tried also to create a research group on what could be loosely called Early Modern Iberian Science. Bringing together graduate students, former graduate students, post-doctoral collaborators and other co-workers we have managed to establish a very lively and very active group, with collaborators from different countries (See the page Students and collaborators for information on the group working with me).

I am a member of various learned and academic societies, both Portuguese (the Academia das Ciências de Lisboa, the Academia de Marinha), and international (the Académie Internationale d'Histoire des Sciences, the European Society for the History of Science [I was at the «Scientific Commitee» in 2008-2010], the History of Science Society).