The latter, when used to achieve low temperatures, is more commonly known as refrigerant.
If they weren't artificially made, then scientists wouldn't have had to wait for almost a century to achieve temperatures near to absolute zero.
The wood fuel must be constantly supplied in order to achieve temperatures high enough to fire the clay.
It achieved temperatures over a million degrees and sustained them for several milliseconds.
The process achieved relatively low temperatures and was not successful with steel.
This technique is already used to achieve cryogenic temperatures in the laboratory setting (below 10K).
Most familiar systems cannot achieve negative temperatures, because adding energy always increases their entropy.
The current apparatus for achieving low temperatures has two stages.
To achieve temperatures above the boiling point requires the use of a pressure canner.
It is possible to achieve different molten pool shapes and temperatures.