Towards a definition of time
Lecture by Prof. Gaetano Mileti (co-founder of the Time and Frequency Laboratory of the University of Neuchâtel) at the SIHH 2019, Watches & Wonders Geneva (in English)
The philosophers and astronomers who came before us probed the stars and studied their light to understand the universe and observe the passage of time. They learned to measure time in intervals of years, months, days, hours, often as a period or cycle. Nowadays, we are also using light in the same quest for precision and knowledge, but can we proclaim having found universal time?
Precise time measurement: atomic clocks and their applications
Lecture by Prof. Pierre Thomann (co-founder of the Time and Frequency Laboratory of the University of Neuchâtel) at the University of Geneva, in 2011 (in French)