clc;
close();
clear();
//page no 472
//prob no. 14.3
f=1*10^9;  //Hz
lembda=3*10^8/f;   //m
mprintf('The free space wavelength is = %i cm \n',lembda*100);
l=.1*lembda;
mprintf(' Length ,l= %i cm',l*100);