Abstract
The thermal sensation of hands in the water was studied psychologically and following conclusions were obtained:
1) Under the atmospheric temperature of 20°C and 30°C and the water temperature of 4°-30°C, the relationship between thermal sensation value of hands and temperature of the water was obtained. The neutral point of the thermal sensation existed between 28°-29°C. The thermal sensation value was not affected by the atmospheric temperature and a linear relation was observed between the thermal sensation and the water temperature.
2) A difference of the thermal sensation value of hands with a thin plastic gloves of 0.02mm in thickness and bare hands were analyzed by comparing threshold value and just noticeable difference (JND) curve. Two JND curves showed slight difference at the water temperature below 20°C.
