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+// Scilab code: Ex6.2 : Planck's constant: Pg: 156 (2008)
+L = 24.7e-012;    // Wavelength of X-rays, m
+V = 50000;    // Potential difference, volts
+c = 3e+08;    // Velocity of light, m/s
+e = 1.6e-019;    // Charge of an electron, coulombs
+// Since e*V = h*c/L;    // Energy required by an electron to move through a potential barrier of one volt, joules
+// solving for h
+h = e*V*L/c;    // Planck's constant, Joule second
+printf("\nh = %3.1e Js ", h);
+// Result
+// h = 6.6e-034 Js
+\ No newline at end of file