Newton method for computing the adaptation coefficient in the CIE system of mesopic photometry

A study by Gao et al found that the Newton method may not converge for certain combinations of photopic luminance and ratio scotopic computing adaptation coefficient m, CIE MES2 system mesopic photometry. Hence, they proposed to use Bisection-Newton method. In this short note, we propose with a new initial guess m. Numerical simulation has shown only converges, but also converges faster than