Cryogenics necessary to use a silicon diode for accuracy. Cryogenics In physics, cryogenics is the production and behaviour of materials at very low temperatures. A person who studies elements that have been subjected to extremely cold temperatures is called a "cryogenicist". It is not well-defined at what point on the temperature scale refrigeration ends and cryogenics begins, but scientists assume a gas to be cryogenic if it can be liquefied at or below . The U.S. National Institute of Standards and Technology has chosen to consider the field of cryogenics as that involving temperatures below . This is a logical dividing
English prefix anglicized neo-classical English words such as "deceive" are not analyzed by Marchand as being composed of a prefix "de-" and a bound base "-ceive" but are rather analyzed as being composed of a single morpheme (although the Latin sources of these English words are analyzed as such, as Latin words in the Latin language). However, not all foreign words are unanalyzable according to an English basis: some foreign elements have become a part of productive English word-formation processes. An example of such a now native English prefix is "co-" as in "co-worker", which is ultimately derived from the Latin prefix