AL ASAD, Iraq (May 3, 2005) - Sgt. David L. Van Bever, weather observer and native of Paramus, N.J., checks the temperature data on a wet-bulb thermometer. The special thermometer factors in actual temperature, a wet temperature and a special copper ball then uses an equation to determine the temperature as it relates to the human body. The wet temperature mimics the effect of perspiration. - AL ASAD, Iraq (May 3, 2005) - Sgt. David L. Van Bever, weather observer and native of Paramus, N.J., checks the temperature data on a wet-bulb thermometer. The special thermometer factors in actual temperature, a wet temperature and a special copper ball then uses an equation to determine the temperature as it relates to the human body. The wet temperature mimics the effect of perspiration.