“…It is interesting to notice that the Sagnac effect was interpreted as a disproval of the Special Theory of Relativity (SRT) not only during the early years of relativity (in particular by Sagnac himself), but, also, more recently, in the 1990's by Selleri [3], [4], Croca-Selleri [5], Goy-Selleri [6], Vigier [7], Anastasovski et al [8], Klauber [9]. However, this claim is incorrect: as a matter of fact, the Sagnac effect for counter-propagating light beams (in vacuum) can be explained completely in the framework of SRT, see for instance Weber [10], Dieks [11], Anandan [12], Rizzi-Tartaglia [13], Bergia-Guidone [14], Rodrigues-Sharif [15], Henrisken [16], Rizzi-Ruggiero [17]. According to SRT, eq.…”