Medical Definition of Puberty, precocious. Puberty, precocious: Precocious puberty is the unusually early development of secondary sexual features. The onset of sexual maturation in a girl before age 8 or a boy before age 9 is usually considered to be precocious puberty. Last Editorial Review: 7/1/2016.
Evaporative coolers lower the temperature of air using the principle of evaporative cooling, unlike typical air conditioning systems which use vapor-compression refrigeration or absorption refrigerator. Evaporative cooling is the addition of water vapor into air, which causes a lowering of the temperature of the air.
This is why you probably feel a lot warmer on a hot, humid day than during dry conditions with the same temperature. The high humidity prevents the water from evaporating, and thus, no evaporative cooling can take place. Lesson Summary. In summary, evaporative cooling is the process of removing heat from a surface due to the evaporation of water. Water can absorb a lot of heat without changing phases, allowing it to remove heat from the surface it is on.