We know about capillary rise. And we say that meniscus is hemispherical in shape. Now please see this picture. http://www.flickr.com/photos/63184961@N00/3030969897/ There i am mentioning two points where the pressure is indicated as P1 and P2. I am also mentioning two other points 1' and 2'. the pressure there is atmospheric (Po). Are these pressure P1 and P2 same or different. If same, then pressure P1' and p2' will be different owing to different heights h1 and h2. But we know that P1' = Po and P2' = Po. If different, then how can the shape of meniscus be hemispherical. It must be flat then. Where am i going wrong??