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// Chapter 4 Additional Example 6
//==============================================================================
clc;
clear;
// input data
h = 6.625*10^-34 // plancks constant
m = 1.678*10^-27 // mass of proton in Kg
e = 1.6*10^-19 // charge of electron
Kb = 1.38*10^-23; // boltzmann constant
T = 300 // Temperature in kelvin
// Calculations
lamda = h/(sqrt(3*m*Kb*T)) // de Broglie wavelength
// Output
mprintf('The de-Broglie wavelength = %3.4f Å',lamda*10^10);
//==============================================================================
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