Fig. 6: Bubble contact angle analysis at 0 and 1 g.
From: Predicting the efficiency of oxygen-evolving electrolysis on the Moon and Mars

A comparison of bubble attachment angle at 1 g after 6 (a) and 16 (b) seconds of electrolysis, and at micro-g after 6 (c) and 16 (d) seconds of electrolysis. Contact angles were measured using imageJ; angles shown are a graphical representation. Average values are shown for each angle and tabulated in Supplementary Table 1.