A runny nose. Constant clear and watery nasal discharge from the nose is usually the first complaint. If allergies are the cause of the runny nose then itchiness of the nose and eyes will also be present. A runny nose also commonly results in a stuffy congested feeling in the nose.
by Guest Writer Jenni Worboys. A barometer is a widely used weather instrument that measures atmospheric pressure (also known as air pressure or barometric pressure) - the weight of the air in the atmosphere.
A THERMOMETER measures the air temperature. Most thermometers are closed glass tubes containing liquids such as alcohol or mercury. When air around the tube heats the liquid, the liquid expands and moves up the tube. A scale then shows what the actual temperature is. A BAROMETER measures air pressure. It tells you whether or not the pressure is rising or falling. A rising barometer means sunny and dry conditions, while a falling barometer means stormy and wet conditions. An Italian scientist named Torricelli built the first barometer in 1643.