//Chapter 4 : Laser and Holography clear; //Variable declaration lamda=6328*10**-10 //wavelength h=6.63*10**-34 //planck's constant c=3*10**8 //speed of light //Calculations E=((h*c)/lamda)/1.6*10**19 Momentum=h/lamda/10**-27 //Result mprintf("Energy of radiation= %f eV",E) mprintf("\nMomentum of electron= %f*10**-27 kgm/s",Momentum)