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// Scilab Code Ex1.21: Page-1.20 (2009)
clc; clear;
V = 50; // Potential difference, V
m = 9.1e-031; // Mass of the electron, kg
e = 1.6e-019; // Electronic charge, C
h = 6.6e-034; // Planck's constant, Js
lambda = h/sqrt(2*m*e*V); // From de-Broglie relation,
printf("\nde-Broglie wavelength of the electron = %4.2f angstrom", lambda/1e-010);
// Result
// de-Broglie wavelength of the electron = 1.73 angstrom
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