POISSON'S PROBABIIJTY SUMMATION 

 Practical Applications 



611 



In appl}ing the Poisson summation to any concrete problem, or in 

 comparing any observed distribution with the corresponding Poisson 

 distribution, it is necessary to bear in mind several practical condi- 

 tions wliich must work against any perfect agreement between the 



000001 



OWHII 



I c: J 4 D D / B ! 



{|^ikiii(iiK!ii,i|iiiiiili(i^[i[5MRl([i^ 



10 II 12 13 14 15 



K^ 



iiiliilllB 



5 6 7 8 



Values of a 



Fig. 4— Comparison of an observed distribution of the number of a particles emitted 



witii_ the corresponding Poisson distribution, showing the method of using Fig. 1 



or Fig. 2 as a background for j^lotting actual distributions. The Poisson distribution 



is shown by a ^•erticai line, the observed distribution by dots 



