Relative humidity. Relative humidity (RH) is the ratio of the partial pressure of water vapor to the equilibrium vapor pressure of water at a given temperature. Relative humidity depends on temperature and the pressure of the system of interest. It requires less water vapor to attain high relative humidity at low temperatures; more water vapour is required to attain high relative humidity in warm or hot air.
silver is the color of the element mercury silver is the color of the element mercury Silvery.
Mercury is a chemical element. It is the only elemental metal that is liquid at ordinary temperatures. Scientists use symbols to stand for the chemical elements. The symbol for mercury is Hg, from the Latin word hydrargyrum, meaning liquid silver.. The element is also called quicksilver.