Cryogenics scale, both of which measure from absolute zero, rather than more usual scales such as Celsius or Fahrenheit, with their zeroes at arbitrary temperatures. The word "cryogenics" stems from Greek "κρύο (cryo)" – "cold" + "γονική (genic)" – "having to do with production". Cryogenic fluids with their boiling point in Kelvin Liquefied gases, such as liquid nitrogen and liquid helium, are used in many cryogenic applications. Liquid nitrogen is the most commonly used element in cryogenics and is legally purchasable around the world. Liquid helium is also commonly used and allows for the lowest attainable temperatures to be reached. These
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