when the mind is hot , water is produced to heat the mind & if heat is absorbed from a source then that heat source will cool ->  heat is absorbed from the body by sweat  heat is absorbed from the body by sweat & if heat is added to a substance then that substance absorbs that heat -> light is added to rain as it absorbs light from the mind heat is added to sweat as it absorbs heat from the body  equals is a mean of steam & evaporation means a substance changes from a liquid into a gas by increasing heat energy -> sweat will evaporate if its heat energy is increased sweat will evaporate if its heat energy is increased  light is added to rain as it absorbs light from the mind & sweat will evaporate if its heat energy is increased -> sweat evaporates as it absorbs heat from the body sweat evaporates as it absorbs heat from the body  sweat evaporates as it absorbs heat from the body & if light is absorbed from a sink then that light sink will heat -> a body is cooled by sweat absorbing heat as it evaporates