Principles of evaporation:
In 1802, John Dalton formulated the fundamental physical law of evaporation, known as Dalton's Law of Evaporation:
where \(E\) is evaporation rate, \(e_s\) is the saturation vapor pressure at water surface temperature, \(e_a\) is the actual vapor pressure of the overlying air, and \(f(u)\) is a wind function.
Dalton was the first to state that evaporation is directly proportional to the vapor pressure gradient \((e_s - e_a)\).
वाष्पीकरण का डाल्टन नियम:
1802 में जॉन डाल्टन ने प्रतिपादित किया कि किसी मुक्त जल सतह से वाष्पीकरण की दर जल की सतह के संतृप्त वाष्प दाब (