File talk:150 deg water contact angle.png

the construction purporting to show the contact angle is incorrect. the base is correct lying in the plane of the base of the droplet, but the adjacent arm should be tangential to the surface of the droplet where it meets the surface and it makes at obtuse angle for a hydrophobic droplet - as is correctly shown.
 * I agree. The angle shown in red is labelled as 75.05 degrees. The actual contact angle is 75+90 = 165 (at least, that is the intended meaning of the label, and it is close to correct or correct). So the contact angle is, as claimed below the picture (but not in the filename of the picture), 150-plus degrees. — Preceding unsigned comment added by 84.227.228.68 (talk) 18:38, 31 May 2014 (UTC)