3. (a) For a 300 kV electron beam, the wavelength is 0.00197 nm. Using the Rayleigh criteria, d = 0.61 x wavelength, calculate the wavelength limited resolution. (5 marks) (b) Consider a TEM operating at 300kV (the wavelength is 0.00197nm), with spherical aberration coefficient Cs=1.1mm. Calculate the Scherzer defocus for this TEM, and its point resolution. (5 marks) (c) Compare the wavelength limited resolution and the point resolution you calculated in (a), and explain what