Some pictures I took while travelling in the context of my research. I also do other things in my life, such as competitive powerlifting or long-distance hiking, and I might occasionally smuggle in some of these pictures here.

Nov 2022: Talking about the development of geodetic models of the earth and their importance for modelling other planets in the solar system. At Harvard's Earth and Planetary Science Department, photo taken by Junjie Dong.

Oct 2022: Chinatown (Chicago), after recording an Elucidations episode on the philosophy of measurement with Matt Teichman and Joseph Diller.

Sep 2022: Trying hard to understand operationalism with my niece Anna.

Sep 2022: John Herschel's chart of corrected 18th-century surface gravity measurements, discovered in the archive of the Royal Society. (courtesy of the Royal Society).

Jul 2022: Leonardo da Vinci's mechanical drawings in the Museo Nazionale della Scienza e della Tecnologia during the Measurement at the Crossroads Conference in Milan.

Jul 2022: Courtyard of the same Museum on the same day.

April 2022: Price lecture at the Du Châtelet workshop at Duke University. Photo by Alisa Bokulich.

Aug 2021: Newton's Principia as street art in Barbastro, Huesca.

Johann Benedict Listing's New Geometrical and Dynamical Constants of the Earth's Figure (Göttingen 1878). A forgotten but important contribution to physical geodesy, which I rediscovered in the archives of the University of Göttingen.

May 2022: View on Stockholm's city library from the astronomical observatory hill. Taken after a guest lecture for the Department of Engineering at KTH Stockholm.

Feb 2020: Dramatically gesturing while talking about scientific pluralism at the Oxford Philosophy of Physics Graduate Conference. Photo by Caspar Jacobs.

Sep 2021: Dresden's historical center during a workshop on the history of precision measurement at the Mathematisch-Physikalischer Salon of the Staatliche Kunstsammlungen.

Feb 2022: Making funny faces while competing for the Cambridge University Powerlifting Team. Photo by White Lights Media

Sunrise in Peneda-Gerês National Park.