« We are like dwarfs on the shoulders of giants. » This famous metaphor, attributed to Bernard de Chartres, a XIIth century philosopher, reused by Newton and Pascal among others, is a tribute to savant predecessors and an acknowledgment of the cumulative nature of scientific...

14 November, 2010 /

In its modern interpretation, the principle of relativity is profoundly linked to the group structure of Lorentz transformations. We will describe the equivalence relation between the two, and at the same time give a geometrical description of what is an inertial reference frame in special relativity....

29 October, 2010 /