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, also known as quicksilver or hydrargyrum, is a chemical element. Its symbol on the periodic table is Hg, and its [[atomic number] ]is 80. Its atomic mass is 200.59. The symbol Hg stands for its Latinized Greek name hydrargyrum, meaning watery or liquid silver.