Cryogenics 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 line, since the normal boiling points of the
Binary prefix "System Description" (1968) made extensive use of K as 1024. Thus the first binary prefix was born. Another style was to truncate the last three digits and append K, essentially using K as a decimal prefix similar to SI, but always truncating to the next lower whole number instead of rounding to the nearest. The exact values words, words and words would then be described as "32K", "65K" and "131K". This style was used from about 1965 to 1975. These two styles (K = 1024 and truncation) were used loosely around the same time, sometimes by the same company. In