// Scilab code Ex1.2: : Pg:19 (2008)
clc; clear;
V = 100;    // potential difference, volt
Lambda = 12.25/sqrt(V);    // de Broglie wavelength, angstorm
printf("\nThe de-Broglie wavelength of an electron = %5.3f angstorm", Lambda);

// Result 
// The de-Broglie wavelength of an electron = 1.225 angstorm