Write the SI unit of rk in terms of base unit what is the special name and symbol of this unit
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The Boltzmann constant (kB or k) is a physical constant relating the average kinetic energy of particles in a gas with the temperature of the gas[2] and occurs in Planck's law of black-body radiation and in Boltzmann's entropy formula. It was introduced by Max Planck, but named after Ludwig Boltzmann.
It is the gas constant R divided by the Avogadro constant NA:
{\displaystyle k={\frac {R}{N_{\text{A}}}}.}
The Boltzmann constant has the dimension energy divided by temperature, the same as entropy. As of 2017, its value in SI units is a measured quantity. The recommended value (as of 2015, with standard uncertainty in parentheses) is1.38064852(79)×10−23 J/K.[3]
Current measurements of the Boltzmann constant depend on the definition of the kelvin in terms of the triple point of water. In the redefinition of SI base units adopted at the 26th General Conference on Weights and Measures(CGPM) on 16 November 2018,[4] the definition of the kelvin was changed to one based on a fixed, exact numerical value of the Boltzmann constant, similar to the way that the speed of light was given an exact numerical value at the 17th CGPM in 1983.[5] The final value (based on the 2017 CODATA adjusted value of 1.38064903(51)×10−23 J/K) is 1.380649×10−23 J/K.
It is the gas constant R divided by the Avogadro constant NA:
{\displaystyle k={\frac {R}{N_{\text{A}}}}.}
The Boltzmann constant has the dimension energy divided by temperature, the same as entropy. As of 2017, its value in SI units is a measured quantity. The recommended value (as of 2015, with standard uncertainty in parentheses) is1.38064852(79)×10−23 J/K.[3]
Current measurements of the Boltzmann constant depend on the definition of the kelvin in terms of the triple point of water. In the redefinition of SI base units adopted at the 26th General Conference on Weights and Measures(CGPM) on 16 November 2018,[4] the definition of the kelvin was changed to one based on a fixed, exact numerical value of the Boltzmann constant, similar to the way that the speed of light was given an exact numerical value at the 17th CGPM in 1983.[5] The final value (based on the 2017 CODATA adjusted value of 1.38064903(51)×10−23 J/K) is 1.380649×10−23 J/K.
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