CM radius r0 5 micron NM radius a 3 micron (Note:α/r0 ≈ 60% for mammals) Cytoplasm dielectric const. ε = 60ε0 = 7.1×10–10F/m Thermal energy  kBT 4.14x10–21 J Positive charge on nucleus QNM ≈+0.3×10–11C (Coulomb) Viscosity η of cytoplasm ≈10–13 (water) Reynolds number R0 462×(0.4 nm)

Table 1: Parameters of the cell.