Show weather in a teacup here is a practical way of telling whether a day is going to be fine or wet drop a lump of sugar into a cup of tea and watch the be havior of the bubbles as they rise to the surface if they appear as tiny drops hurrying to the side of the cup there to disappear then the day will be fine should the bubbles grow large and float in the center of the cup for some time then be sure ram rain is close at hand the reasons reason A writer in pearson s london weekly answers the behavior of the bubbles is due to the pressure of the air when this is high in fine weather the bubbles burst buret quickly when low and rain is near the bubbles remain intact for or an appreciable time |