Which of the following best defines a cryogenic fluid?

A cryogenic fluid is classified as a substance that has a boiling point lower than -130 degrees Fahrenheit. This definition is significant in various applications such as aerospace, liquefied gas storage, and cryogenics, where materials must be maintained at extremely low temperatures for operational efficiency and safety.

Fluids that fall under this category, such as liquid nitrogen or liquid helium, exhibit unique physical properties at cryogenic temperatures, including changes in density, viscosity, and thermal conductivity. These properties allow for various uses, such as superconductivity and thermal insulation, which are critical in scientific and industrial applications. Understanding this definition is crucial for professionals working in fields that require precise temperature control and material behavior at low temperatures.