Hence, when a sub-millimetric droplet (R = 40 µm) impacts the surface at low U I = 5 cm s -1 and equivalently Ũ = 0.06, the droplet deforms minimally with a maximum contact radius r max = r s = R sin θ (Fig. ). In contrast, a millimetric droplet (R = 1.1 mm) impacting at high U I = 1 m s -1 and Ũ = 5.4 flattens into a disc with a much larger r max = R Ũ 1/2 (Fig. ), as first suggested by Clanet et al. (2004). To summarize, we expect