Extra-dimensions are a common topic in popular descriptions of theoretical physics with whichundergraduate student most often have no contact in physics courses. This paper shows how studentscould be introduced to this topic by presenting an approach to two basic consequences of thepresence of compact extra-dimensions based on undergraduate-level physics. The insensibility oflow-energy physics to compact extra dimensions is illustrated in the context of non-relativisticquantum mechanics and the prediction of Kaluza-Klein excitations of particles is discussed in theframework of relativistic wav

Aims. Daily observation conditions are needed when observing the Sun at high angular resolution. MISOLFA is a daytime seeingmonitor developed for this purpose that allows the estimation of the spatial and temporal parameters of atmospheric turbulence. Thisinformation is necessary, for instance, for astrometric measurements of the solar radius performed at Cale Observatory (France)with SODISM II, the ground-based version of the SODISM instrument of the PICARD mission.Methods. We present a new way to estimate the spatial parameters of atmospheric turbulence for daily observations. This method