945. Given a dry bulb temperature of 78°F and wet bulb temperature of 66.5°F, what is the dew point?

The dew point is determined by the intersection of the dry bulb (78F) and wet bulb (66.5F) temperatures on a psychrometric chart, which corresponds to a dew point of 59F. This value satisfies the condition that the dry bulb temperature must be greater than the wet bulb temperature, which must be greater than the dew point temperature.