According to the proportionality of inlet and outlet forces at interface of a particle ; relationship between Coulomb's and Planck's constants, for charged leptons , is calculated as following :

(|External force at interface|=k_{e}.q_{e}^{2}/r_{int}^{2})=a(|Internal force at interface|=m.c^{2}/r_{int})

Proportional factor [a**=**(1/11)] is explained due to :

There are twelve point , with equal distance , on interface area for submitting Virtual Photons . One of them returns to the center (11=1-12) and remained eleven

photons fact in electrical field .

**=> **(k_{e}.q_{e}^{2}/r_{int}^{2})=(1/11)(c/r_{int}^{2}2p)(m.c.2pr_{int}=h/2)

**=> **(k_{e}.q_{e}^{2})=(1/44p)(c.h)

q_{e}=1.602_{*}10^{19}C , h=1.054_{*}10^{-34}(N.m=j)sec , c=3_{*}10^{8 }m/sec

k_{e}=(1/44p)(3_{*}10^{8 }m/sec)(1.054_{*}10^{-34}N.m.sec)/(1.602_{*}10^{19}C)^{2}

=8.918_{*}10^{9} N.m^{2}/C^{2}»8.987_{*}10^{9} N.m^{2}/C^{2}

what is your idea about that ? How is that in quantum physics?

Is there an overall and general method to result that ?