The subject we discussion about are Nucleation and Meta stable phenomena’s , superheat liquids , supercold liquids and meanwhile applications of this liquids. all in all Meta stable situation can occur in three condition: First while changing liquid phase to gas phase by heating , Second changing liquid phase to solid phase by cooling , Third while moving water stream in subsonic nozzles or supersonic nozzles before condensation process occur. Of curse first and second conditions more than third condition view in nature and various industrials and productions of engender in first and second conditions are more than third condition. Of curse skews and turbulences that explain about them can disassemble this conditions. Meanwhile getting relations show that superheat degree have maximum and minimum amount . تفاصيل المقالة