jan 1, 1751 - Charles Le Roy's Dew Point Discovery
Description:
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.Added to timeline:
Date:
jan 1, 1751
Now
~ 275 years ago