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// Scilab Code Ex2.11 Energy of photon : Pg:49 (2008)
h = 6.624e-034; // Planck's constant, Js
c = 3e+08; // Speed of light, m/s
e = 1.6e-019; // Energy equivalent of 1 eV, joule/eV
L = 1800e-010; // Wavelength of incident light, m
L0 = 2300e-010; // Threshold wavelength of tungsten, m
E = h*c*(1/L - 1/L0); // Einstein's photoelectric equation for kinetic energy of emitted electrons, J
printf("\nThe energy of electrons emitted from the surface of tungsten = %3.1f eV", E/e);
// Result
// The energy of electrons emitted from the surface of tungsten = 1.5 eV
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