Quantum Physics, Fundamental Constants, Solid State Physics.
value for α. Since the value of c is accurately known, improving the value of R improves the knowledge of α, which enters all the formulas of Quantum Electrodynamics. [1] See for instance Yuko Hanaoka et al, Materials transactions 43,7 (2002). [2] Michele Cini, Physical Review B22, 5887 (1980) [3]