Cryogenic fluids are liquids that exist at extremely low temperatures, typically below -150 degrees Celsius (-238 degrees Fahrenheit). These fluids, such as liquid nitrogen and liquid helium, are used in various applications, including cooling superconductors and preserving biological samples. Their unique properties allow them to maintain low temperatures, which is essential in many scientific and industrial processes. The handling of cryogenic fluids requires special equipment and safety precautions due to their extreme cold and potential hazards. For instance, exposure to these fluids can cause severe frostbite. Industries like aerospace and medical research rely on cryogenic technology to advance their work and improve outcomes.