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// Scilab Code Ex2.18 Energy difference in the emission or absorption of sodium D1 line: Pg:58 (2008)s
h = 6.624e-034; // Planck's Constant, Js
c = 3e+08; // Speed of light, m/s
L = 590e-09; // Wavelenght of sodium D1 line, m
E = h*c/L; // Energy difference in the emission or absorption of sodium D1 line, J
printf("\nThe energy difference in the emission or absorption of sodium D1 line = %4.2e J", E);
// Result
// The energy difference in the emission or absorption of sodium D1 line = 3.37e-019 J
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