4 papers
Science of a coffee cup: a physicist walks into a bar...
Aleksi Bossart, Romain Fleury, Benjamin Apffel
... and annoys everyone with unsolicited experiments. The present paper proposes a short pedagogical review of the various phenomena that can be observed in a coffee cup with littl…
Motion of a floating sphere pulled by a string and induced flows
Benjamin Apffel, Romain Fleury
We study in this article the motion of a floating ball attached to a soft string set in circular motion through its other end. Although simple, the system exhibits rich dynamics th…
Experimental observation of parabolic wakes in thin plates
Janez Rus, Aleksi Bossart, Benjamin Apffel +2
Wakes are medium perturbations created by a moving object, such as wave patterns behind boats, or wingtip vortices following an aircraft. Here, we report about an experimental stud…
Experimental observation of topological transition in linear and non-linear parametric oscillators
Benjamin Apffel, Romain Fleury
Parametric oscillators are examples of externally driven systems that can exhibit two stable states with opposite phase depending on the initial conditions. In this work, we propos…