ON June II I observed a case of the wet-bulb thermometer reading higher than the dry bulb, which cannot be attributed to a falling temperature, as this anomalous condition continued for more than ...

A METHOD was required whereby the relative humidity (R.H.) of air in equilibrium with cotton samples could be determined to one half of one per cent. The apparatus had to maintain its zero and its ...

A sling psychrometer measures relative humidity by measuring two temperatures: the actual air temperature (dry-bulb) and something called the wet-bulb temperature. The wet-bulb temperature is the ...