Abstract
A decision at the 24th General Conference on Weights and Measures (CGPM) has been made to adopt a dramatic change of the International System of the Units (SI). The unit of thermodynamic temperature, kelvin, is likely to be redefined based upon the fundamental constant k_B, the Boltzmann constant. To this concern, leading national metrology institutes are developing thermodynamic thermometry systems to acquire reliable data for the Boltzmann constant to ensure this redefinition to take place smoothly. Another issue following the redefinition of kelvin is the deviation between the thermodynamic temperature and the temperature scale. This paper describes the background, the aim and the progress of the development of acoustic gas thermometry (AGT) at the National Institute of Advanced Industrial Science and Technology (AIST).
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
