Olof Celsius Olof Celsius Olof Celsius (the elder) (19 July 1670 – 24 June 1756) was a Swedish botanist, philologist and clergyman, He was a professor at Uppsala University, Sweden. Celsius was a mentor of the botanist and scientist Carl Linnaeus. Celsius wrote his most famous book on biblical plants, "Hierobotanicon", in 1745-47. Olof Celsius's nephew Anders Celsius was an astronomer who invented a temperature scale where 100 represented the freezing point of water and 0 represented the boiling point. Jean-Pierre Christin, in 1744 reversed the scale to create the centigrade scale, renamed in 1948 to the Celsius scale in use today.
Time–temperature superposition indicator of the quality of a relationship that has been computed from experimental data. The principle of time-temperature superposition requires the assumption of thermologically simple behavior (all curves have the same characteristic time variation law with temperature). From an initial spectral window ["ω", "ω"] and a series of isotherms in this window, we can calculate the master curves of a material which extends over a broader frequency range. An arbitrary temperature "T" is taken as a reference for setting the frequency scale (the curve at that temperature undergoes no shift). In the frequency range ["ω", "ω"], if the temperature increases