A cryogenic vacuum pump works by condensing vapors onto some absorbent medium. This is an efficient and clean way to pump a system in a research environment. The term cryo means cold, which indicates that these types of vacuum pumps contain a refrigerant cycle to cool the internal parts. The temperature difference between the inside and outside of a typical cryogenic pump is AT 309 C. = Derive an equation to convert this difference into a temperature difference ATF in degrees Fahrenheit, and then convert AT. ATF = F