Three vessels of different shapes are filled with water to the same height 'h' and their bottom parts are connected to manometers measuring the pressure. The water levels in all the vessels remain the same. . Identify the above phenomenon.

Three vessels of different shapes are filled with water to the same height 'h' and their bottom parts are connected to manometers measuring the pressure. The water levels in all the vessels remain the same. . Predict the pressure level shown by the manometers.