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//What is a wavelength of an electron when it is accelerated
//Example 14.5
clc;
clear;
h=6.626*10^-34; //Planck's constant in J s
me=9.109*10^-31; //Mass of the electron in kg
e=1.602*10^-19; //Charge on an electron in C
V=1*10^3; //Potencial difference in V
Lemda1=h/sqrt(2*me*e*V); //Wavelength of an electron in m (1 J=1 C *1 V)
Lemda=Lemda1*10^9; //Wavelength of an electron in nm (1m=10^9 nm)
printf("Wavelength of an electron = %.4f nm",Lemda);
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