// Scilab Code Ex1.3: Page-1.5 (2009)
clc; clear;
V = 20e+03;     // Accelerating voltage of electron, V
lambda = 12.25/sqrt(V);     // de Broglie wavelength of the accelerated electron, m
printf("\nThe de Broglie wavelength of the electron = %6.4f angstrom", lambda);

// Result 
// The de Broglie wavelength of the electron = 0.0866 angstrom