1 jan 1751 ano - Charles Le Roy's Dew Point Discovery
Descrição:
 Charles Le Roy (1726-1799) found that dew appeared on the outside of glass as it cooled below a certain temperature, which he called the dew point temperature. He also formulated the concept of relative humidity after concluding that a measurement of the air’s humidity had to be relative depending on temperature. 
Adicionado na linha do tempo:
Data: