Glass-to-metal seal absorb the stresses from thermal expansion mismatches. Due to its very low vapor pressure, indium finds use in glass-metal seals used in vacuum technology. Gallium is a soft metal with melting point at 30 °C. It readily wets glasses and most metals and can be used for seals that can be assembled/disassembled by just slight heating. It can be used as a liquid seal up to high temperatures or even at lower temperatures when alloyed with other metals (e.g. as galinstan). Mercury is a metal liquid at normal temperature. It was used as the earliest glass-to-metal seal and is still
Room temperature of the English Language" identifies room temperature as around , while the "Oxford English Dictionary" states that it is "conventionally taken as about ". Owing to variations in humidity and likely clothing, recommendations for summer and winter may vary; a suggested typical range for summer is , with that for winter being , although by other considerations the maximum should be below – and to avoid sick building syndrome, below . Some studies have suggested that thermal comfort preferences of men and women may differ significantly, with women on average preferring higher ambient temperatures. The World Health Organization's standard for