• geyser activity

    TITLE: geyser
    TITLE: volcano: Hot springs and geysers
    SECTION: Hot springs and geysers
  • steam

    TITLE: steam below the boiling point of water at the prevailing pressure. The addition of heat causes the water to expand slightly and the temperature to rise until the water reaches its boiling point; at this stage, the water is said to be in the saturated liquid state. If more heat is added, boiling begins: the liquid starts to vaporize (turn into steam).
  • tin refining

    TITLE: tin processing: Refining
    SECTION: Refining
    One fire-refining method is called boiling. In this, impure tin from the smelter, or tin from the liquation furnace (see below), is heated in vessels or kettles that are agitated by compressed air. The effect is to oxidize the impurities, which rise to the surface and form a dross.
  • ultrasonic research

    TITLE: ultrasonics: Applications in research
    SECTION: Applications in research