Yanu mbëj, ag jagle gu dàttu la ci wàll-wàllaani ab ne-ne, mooy tax seenug man a digaale ci ndimbalu tooli mbëjbijjaakon yi. Doole jiy judd ci googu digaale mooy sabab ag yëngu ci biir ne-ne bi, muy ab dawaanu mbëj. Bennaanu natt bu benn yan mooy Coulomb. Yan bi gën a ndaw bees man a natt mooy bi ab mbëjfepp di yanu, ñu koy faral di binde e = -1,602 10-19 c.