Long relaxation times and tilt sensitivity in Rayleigh Bénard turbulence F. Chillà, M. Rastello, S. Chaumat and B. Castaing Eur. Phys. J. B, 40 2 (2004) 223-227 Published online: 12 August 2004 DOI: 10.1140/epjb/e2004-00261-3