New experimental confirmation of Kelvin’s equilibria Hamid Ait Abderrahmane, Mohamed Fayed, Hoi Dick Ng and Georgios H. Vatistas Eur. Phys. J. Plus, 133 8 (2018) 339 Published online: 27 August 2018 DOI: 10.1140/epjp/i2018-12188-5