Re: What is the difference between 'dew point' and 'wet-bulb temperature'?

The Wet Bulb Temperature and the Dew Point Temperature are two different 
quantities.  

The Wet Bulb Temperature is defined as the steady state nonequilibrium 
temperature that is reached when a small amount of water is contacted under 
adiabatic conditions by a stream of gas.  It is virtually equivalent to the 
adiabatic saturation temperature.  As the water contained in the wick of 
the psychrometer evaporates, the convective heat flowing from the gas 
stream to the wick at a lower temperature balances the latent heat of 
evaporation of the water.

The Dew Point Temperature is the temperature at which an air/water vapor 
mixture is saturated with water vapor.  If the partial pressure of water 
vapor increases above the saturation partial pressure at constant 
temperature then condensation occurs.  

It is possible for these quantities to be the same but it is not true in 
general.  As humidity increases these two values begin to converge.