11. ITS-90 is then designed to represent the thermodynamic temperature as closely as possible throughout its range. 12. ITS-90 gives a practical means of estimating the thermodynamic temperature to a very high degree of accuracy. 13. I created this picture for the " Thermodynamic temperature " article where it s still being used. 14. I have done good work on Wikipedia, being the principle shepherd of Wikipedia s Kilogram and Thermodynamic temperature articles. 15. Rather, the definition of absolute thermodynamic temperature is best left till the second law is available as a conceptual basis. 16. In practice, several materials gave very similar temperatures to each other and, when discovered, to the thermodynamic temperature . 17. See thermodynamic temperature for more information on translational motions, kinetic ( heat ) energy, and their relationship to temperature. 18. Thermodynamic temperature is defined by the third law of thermodynamics in which the theoretically lowest temperature is the null or zero point.19. Kinetic energy is simply the internal energy of the perfect gas and depends entirely on its pressure, volume and thermodynamic temperature . 20. The second law of thermodynamics provides a fundamental, natural definition of thermodynamic temperature starting with a null point of absolute zero.